diff --git a/.gitignore b/.gitignore
index e4aae3d..f2d0c6a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -57,6 +57,7 @@ wasm
 .appimage_workspace
 
 todo.txt
+.vscode
 
 docs/public
 deploy_docs.sh
diff --git a/cointop/cointop.go b/cointop/cointop.go
index d4579ed..68c374a 100644
--- a/cointop/cointop.go
+++ b/cointop/cointop.go
@@ -13,10 +13,11 @@ import (
 	"github.com/cointop-sh/cointop/pkg/api/types"
 	"github.com/cointop-sh/cointop/pkg/cache"
 	"github.com/cointop-sh/cointop/pkg/filecache"
+	"github.com/cointop-sh/cointop/pkg/gocui"
 	"github.com/cointop-sh/cointop/pkg/pathutil"
 	"github.com/cointop-sh/cointop/pkg/table"
 	"github.com/cointop-sh/cointop/pkg/ui"
-	"github.com/miguelmota/gocui"
+
 	log "github.com/sirupsen/logrus"
 )
 
@@ -47,6 +48,7 @@ type State struct {
 	defaultView        string
 	defaultChartRange  string
 	maxChartWidth      int
+	columnLookup       []string
 
 	favorites                  map[string]bool
 	favoritesTableColumns      []string
@@ -488,8 +490,7 @@ func (ct *Cointop) Run() error {
 		return err
 	}
 
-	ui.SetFgColor(ct.colorscheme.BaseFg())
-	ui.SetBgColor(ct.colorscheme.BaseBg())
+	ui.SetStyle(ct.colorscheme.BaseStyle())
 	ct.ui = ui
 	ct.g = ui.GetGocui()
 	defer ui.Close()
diff --git a/cointop/colorscheme.go b/cointop/colorscheme.go
index 2403d9c..2f364dc 100644
--- a/cointop/colorscheme.go
+++ b/cointop/colorscheme.go
@@ -3,10 +3,11 @@ package cointop
 import (
 	"fmt"
 	"strconv"
+	"strings"
 	"sync"
 
 	fcolor "github.com/fatih/color"
-	"github.com/miguelmota/gocui"
+	"github.com/gdamore/tcell/v2"
 	"github.com/tomnomnom/xtermcolor"
 )
 
@@ -50,19 +51,38 @@ var BgColorschemeColorsMap = map[string]fcolor.Attribute{
 	"yellow":  fcolor.BgYellow,
 }
 
-var GocuiColorschemeColorsMap = map[string]gocui.Attribute{
-	"black":   gocui.ColorBlack,
-	"blue":    gocui.ColorBlue,
-	"cyan":    gocui.ColorCyan,
-	"green":   gocui.ColorGreen,
-	"magenta": gocui.ColorMagenta,
-	"red":     gocui.ColorRed,
-	"white":   gocui.ColorWhite,
-	"yellow":  gocui.ColorYellow,
+// See more: vendor/github.com/mattn/go-colorable/colorable_windows.go:905
+// any new color for the below mapping should be compatible with this above list
+var TcellColorschemeColorsMap = map[string]tcell.Color{
+	"black":   tcell.ColorBlack,
+	"blue":    tcell.ColorNavy,
+	"cyan":    tcell.ColorTeal,
+	"green":   tcell.ColorGreen,
+	"magenta": tcell.ColorPurple,
+	"red":     tcell.ColorMaroon,
+	"white":   tcell.ColorSilver,
+	"yellow":  tcell.ColorOlive,
 }
 
 // NewColorscheme ...
 func NewColorscheme(colors ColorschemeColors) *Colorscheme {
+	// Build lookup table for defined values, then replace references to these
+	const prefix = "define_"
+	const reference = "$"
+	defines := ColorschemeColors{}
+	for k, v := range colors {
+		if strings.HasPrefix(k, prefix) {
+			defines[k[len(prefix):]] = v
+		}
+	}
+	for k, v := range colors {
+		if vs, ok := v.(string); ok {
+			if strings.HasPrefix(vs, reference) {
+				colors[k] = defines[vs[len(reference):]]
+			}
+		}
+	}
+
 	return &Colorscheme{
 		colors:     colors,
 		cache:      make(ColorCache),
@@ -70,14 +90,8 @@ func NewColorscheme(colors ColorschemeColors) *Colorscheme {
 	}
 }
 
-// BaseFg ...
-func (c *Colorscheme) BaseFg() gocui.Attribute {
-	return c.GocuiFgColor("base")
-}
-
-// BaseBg ...
-func (c *Colorscheme) BaseBg() gocui.Attribute {
-	return c.GocuiBgColor("base")
+func (c *Colorscheme) BaseStyle() tcell.Style {
+	return c.Style("base")
 }
 
 // Chart ...
@@ -245,17 +259,42 @@ func (c *Colorscheme) ToSprintf(name string) ISprintf {
 		return cached
 	}
 
+	// TODO: use c.Style(name)?
 	var attrs []fcolor.Attribute
 	if v, ok := c.colors[name+"_fg"].(string); ok {
 		if fg, ok := c.ToFgAttr(v); ok {
 			attrs = append(attrs, fg)
+		} else {
+			color := tcell.GetColor(v)
+			if color != tcell.ColorDefault {
+				// 24-bit foreground 38;2;⟨r⟩;⟨g⟩;⟨b⟩
+				r, g, b := color.RGB()
+				attrs = append(attrs, 38)
+				attrs = append(attrs, 2)
+				attrs = append(attrs, fcolor.Attribute(r))
+				attrs = append(attrs, fcolor.Attribute(g))
+				attrs = append(attrs, fcolor.Attribute(b))
+			}
 		}
 	}
+
 	if v, ok := c.colors[name+"_bg"].(string); ok {
 		if bg, ok := c.ToBgAttr(v); ok {
 			attrs = append(attrs, bg)
+		} else {
+			color := tcell.GetColor(v)
+			if color != tcell.ColorDefault {
+				// 24-bit background 48;2;⟨r⟩;⟨g⟩;⟨b⟩
+				r, g, b := color.RGB()
+				attrs = append(attrs, 48)
+				attrs = append(attrs, 2)
+				attrs = append(attrs, fcolor.Attribute(r))
+				attrs = append(attrs, fcolor.Attribute(g))
+				attrs = append(attrs, fcolor.Attribute(b))
+			}
 		}
 	}
+
 	if v, ok := c.colors[name+"_bold"].(bool); ok {
 		if bold, ok := c.ToBoldAttr(v); ok {
 			attrs = append(attrs, bold)
@@ -275,42 +314,42 @@ func (c *Colorscheme) Color(name string, a ...interface{}) string {
 	return c.ToSprintf(name)(a...)
 }
 
-func (c *Colorscheme) GocuiFgColor(name string) gocui.Attribute {
-	var attrs []gocui.Attribute
-	if v, ok := c.colors[name+"_fg"].(string); ok {
-		if fg, ok := c.ToGocuiAttr(v); ok {
-			attrs = append(attrs, fg)
-		}
-	}
+func (c *Colorscheme) Style(name string) tcell.Style {
+	st := tcell.StyleDefault
+	st = st.Foreground(c.tcellColor(name + "_fg"))
+	st = st.Background(c.tcellColor(name + "_bg"))
 	if v, ok := c.colors[name+"_bold"].(bool); ok {
-		if v {
-			attrs = append(attrs, gocui.AttrBold)
-		}
+		st = st.Bold(v)
 	}
 	if v, ok := c.colors[name+"_underline"].(bool); ok {
-		if v {
-			attrs = append(attrs, gocui.AttrUnderline)
-		}
+		st = st.Underline(v)
 	}
-	if len(attrs) > 0 {
-		var combined gocui.Attribute
-		for _, v := range attrs {
-			combined = combined ^ v
-		}
-		return combined
+	// TODO: Blink Dim Italic Reverse Strikethrough
+	return st
+}
+
+// tcellColor can supply for types of color name: specific mapped name, tcell color name, hex
+// Examples: black, honeydew, #000000
+func (c *Colorscheme) tcellColor(name string) tcell.Color {
+	v, ok := c.colors[name].(string)
+	if !ok {
+		return tcell.ColorDefault
 	}
 
-	return gocui.ColorDefault
-}
+	if color, found := TcellColorschemeColorsMap[v]; found {
+		return color
+	}
 
-func (c *Colorscheme) GocuiBgColor(name string) gocui.Attribute {
-	if v, ok := c.colors[name+"_bg"].(string); ok {
-		if bg, ok := c.ToGocuiAttr(v); ok {
-			return bg
-		}
+	color := tcell.GetColor(v)
+	if color != tcell.ColorDefault {
+		return color
 	}
 
-	return gocui.ColorDefault
+	// find closest X11 color to RGB
+	// if code, ok := HexToAnsi(v); ok {
+	// 	return tcell.PaletteColor(int(code) & 0xff)
+	// }
+	return color
 }
 
 func (c *Colorscheme) ToFgAttr(v string) (fcolor.Attribute, bool) {
@@ -318,9 +357,10 @@ func (c *Colorscheme) ToFgAttr(v string) (fcolor.Attribute, bool) {
 		return attr, true
 	}
 
-	if code, ok := HexToAnsi(v); ok {
-		return fcolor.Attribute(code), true
-	}
+	// find closest X11 color to RGB
+	// if code, ok := HexToAnsi(v); ok {
+	// 	return fcolor.Attribute(code), true
+	// }
 
 	return 0, false
 }
@@ -330,9 +370,10 @@ func (c *Colorscheme) ToBgAttr(v string) (fcolor.Attribute, bool) {
 		return attr, true
 	}
 
-	if code, ok := HexToAnsi(v); ok {
-		return fcolor.Attribute(code), true
-	}
+	// find closest X11 color to RGB
+	// if code, ok := HexToAnsi(v); ok {
+	// 	return fcolor.Attribute(code), true
+	// }
 
 	return 0, false
 }
@@ -347,19 +388,6 @@ func (c *Colorscheme) ToUnderlineAttr(v bool) (fcolor.Attribute, bool) {
 	return fcolor.Underline, v
 }
 
-// ToGocuiAttr converts a color string name to a gocui Attribute type
-func (c *Colorscheme) ToGocuiAttr(v string) (gocui.Attribute, bool) {
-	if attr, ok := GocuiColorschemeColorsMap[v]; ok {
-		return attr, true
-	}
-
-	if code, ok := HexToAnsi(v); ok {
-		return gocui.Attribute(code), true
-	}
-
-	return 0, false
-}
-
 // HexToAnsi converts a hex color string to a uint8 ansi code
 func HexToAnsi(h string) (uint8, bool) {
 	if h == "" {
@@ -373,6 +401,7 @@ func HexToAnsi(h string) (uint8, bool) {
 		}
 	}
 
+	// TODO: only use if exact, otherwise use 24-bit version
 	code, err := xtermcolor.FromHexStr(h)
 	if err != nil {
 		return 0, false
@@ -380,5 +409,3 @@ func HexToAnsi(h string) (uint8, bool) {
 
 	return code, true
 }
-
-// gocui can use xterm colors
diff --git a/cointop/conversion.go b/cointop/conversion.go
index bbe2a2e..c45ef94 100644
--- a/cointop/conversion.go
+++ b/cointop/conversion.go
@@ -3,10 +3,12 @@ package cointop
 import (
 	"errors"
 	"fmt"
+	"regexp"
 	"sort"
 	"strings"
 
-	"github.com/cointop-sh/cointop/pkg/color"
+	fcolor "github.com/fatih/color"
+
 	"github.com/cointop-sh/cointop/pkg/pad"
 	"github.com/mattn/go-runewidth"
 	log "github.com/sirupsen/logrus"
@@ -176,9 +178,10 @@ func (ct *Cointop) UpdateConvertMenu() error {
 		}
 		shortcut := string(alphanumericcharacters[i])
 		if key == ct.State.currencyConversion {
-			shortcut = ct.colorscheme.MenuLabelActive(color.Bold("*"))
-			key = ct.colorscheme.Menu(color.Bold(key))
-			currency = ct.colorscheme.MenuLabelActive(color.Bold(currency))
+			Bold := fcolor.New(fcolor.Bold).SprintFunc()
+			shortcut = ct.colorscheme.MenuLabelActive(Bold("*"))
+			key = ct.colorscheme.Menu(Bold(key))
+			currency = ct.colorscheme.MenuLabelActive(Bold(currency))
 		} else {
 			key = ct.colorscheme.Menu(key)
 			currency = ct.colorscheme.MenuLabel(currency)
@@ -302,6 +305,26 @@ func CurrencySymbol(currency string) string {
 	return "?"
 }
 
+// ConversionMouseLeftClick is called on mouse left click event
+func (ct *Cointop) ConversionMouseLeftClick() error {
+	v, x, y, err := ct.g.GetViewRelativeMousePosition(ct.g.CurrentEvent)
+	if err != nil {
+		return err
+	}
+
+	// Find the menu entry that includes the mouse position
+	line := v.BufferLines()[y]
+	matches := regexp.MustCompile(`\[ . \] \w+ [^\[]+`).FindAllStringIndex(line, -1)
+	for _, match := range matches {
+		if x >= match[0] && x <= match[1] {
+			s := line[match[0]:match[1]]
+			convert := strings.Split(s, " ")[3]
+			return ct.SetCurrencyConverstionFn(convert)()
+		}
+	}
+	return nil
+}
+
 // Convert converts an amount to another currency type
 func (ct *Cointop) Convert(convertFrom, convertTo string, amount float64) (float64, error) {
 	convertFrom = strings.ToLower(convertFrom)
diff --git a/cointop/keybindings.go b/cointop/keybindings.go
index b220901..3585e11 100644
--- a/cointop/keybindings.go
+++ b/cointop/keybindings.go
@@ -2,168 +2,101 @@ package cointop
 
 import (
 	"strings"
+	"unicode"
 
-	"github.com/miguelmota/gocui"
+	"github.com/cointop-sh/cointop/pkg/gocui"
+	"github.com/gdamore/tcell/v2"
+	log "github.com/sirupsen/logrus"
 )
 
+// keyMap translates key alternative names to a canonical version
+func keyMap(k string) string {
+	key := k
+	switch strings.ToLower(k) {
+	case "lsqrbracket", "leftsqrbracket", "leftsquarebracket":
+		key = "["
+	case "rsqrbracket", "rightsqrbracket", "rightsquarebracket":
+		key = "]"
+	case "space", "spacebar":
+		key = " " // with meta should be "space"
+	case "\\\\", "backslash":
+		key = "\\"
+	case "underscore":
+		key = "_"
+	case "arrowup", "uparrow":
+		key = "Up"
+	case "arrowdown", "downarrow":
+		key = "Down"
+	case "arrowleft", "leftarrow":
+		key = "Left"
+	case "arrowright", "rightarrow":
+		key = "Right"
+	case "return":
+		key = "Enter"
+	case "escape":
+		key = "Esc"
+	case "pageup":
+		key = "PgUp"
+	case "pagedown", "pgdown":
+		key = "PgDn"
+	}
+	return key
+}
+
 // ParseKeys returns string keyboard key as gocui key type
-func (ct *Cointop) ParseKeys(s string) (interface{}, gocui.Modifier) {
+func (ct *Cointop) ParseKeys(s string) (interface{}, tcell.ModMask) {
+	// TODO: change file convention to match tcell (no aliases, dash between mod and key)
+	// TODO: change to return EventKey?
 	var key interface{}
-	mod := gocui.ModNone
-	split := strings.Split(s, "+")
+	mod := tcell.ModNone
+
+	// translate legacy and special names for keys
+	keyName := strings.TrimSpace(strings.Replace(s, "+", "-", -1))
+	split := strings.Split(keyName, "-")
 	if len(split) > 1 {
 		m := strings.ToLower(strings.TrimSpace(split[0]))
-		k := strings.ToLower(strings.TrimSpace(split[1]))
+		k := strings.TrimSpace(split[1])
+		k = keyMap(k)
+		if k == " " {
+			k = "Space" // fix mod+space
+		}
+
 		if m == "alt" {
-			mod = gocui.ModAlt
-			s = k
+			mod = tcell.ModAlt
+			keyName = k
 		} else if m == "ctrl" {
-			switch k {
-			case "0":
-				key = '0'
-			case "1":
-				key = '1'
-			case "2":
-				key = gocui.KeyCtrl2
-			case "3":
-				key = gocui.KeyCtrl3
-			case "4":
-				key = gocui.KeyCtrl4
-			case "5":
-				key = gocui.KeyCtrl5
-			case "6":
-				key = gocui.KeyCtrl6
-			case "7":
-				key = gocui.KeyCtrl7
-			case "8":
-				key = gocui.KeyCtrl8
-			case "9":
-				key = '9'
-			case "a":
-				key = gocui.KeyCtrlA
-			case "b":
-				key = gocui.KeyCtrlB
-			case "c":
-				key = gocui.KeyCtrlC
-			case "d":
-				key = gocui.KeyCtrlD
-			case "e":
-				key = gocui.KeyCtrlE
-			case "f":
-				key = gocui.KeyCtrlF
-			case "g":
-				key = gocui.KeyCtrlG
-			case "h":
-				key = gocui.KeyCtrlH
-			case "i":
-				key = gocui.KeyCtrlI
-			case "j":
-				key = gocui.KeyCtrlJ
-			case "k":
-				key = gocui.KeyCtrlK
-			case "l":
-				key = gocui.KeyCtrlL
-			case "m":
-				key = gocui.KeyCtrlL
-			case "n":
-				key = gocui.KeyCtrlN
-			case "o":
-				key = gocui.KeyCtrlO
-			case "p":
-				key = gocui.KeyCtrlP
-			case "q":
-				key = gocui.KeyCtrlQ
-			case "r":
-				key = gocui.KeyCtrlR
-			case "s":
-				key = gocui.KeyCtrlS
-			case "t":
-				key = gocui.KeyCtrlT
-			case "u":
-				key = gocui.KeyCtrlU
-			case "v":
-				key = gocui.KeyCtrlV
-			case "w":
-				key = gocui.KeyCtrlW
-			case "x":
-				key = gocui.KeyCtrlX
-			case "y":
-				key = gocui.KeyCtrlY
-			case "z":
-				key = gocui.KeyCtrlZ
-			case "~":
-				key = gocui.KeyCtrlTilde
-			case "[", "lsqrbracket", "leftsqrbracket", "leftsquarebracket":
-				key = gocui.KeyCtrlLsqBracket
-			case "]", "rsqrbracket", "rightsqrbracket", "rightsquarebracket":
-				key = gocui.KeyCtrlRsqBracket
-			case "space":
-				key = gocui.KeyCtrlSpace
-			case "backslash":
-				key = gocui.KeyCtrlBackslash
-			case "underscore":
-				key = gocui.KeyCtrlUnderscore
-			case "\\\\":
-				key = '\\'
+			// let the lookup handle it
+			keyName = m + "-" + k
+		} else {
+			keyName = m + "-" + k
+		}
+		// TODO: other mods?
+	} else {
+		keyName = keyMap(keyName)
+	}
+
+	// First try looking up keyname directly
+	lcKeyName := strings.ToLower(keyName)
+	for key, name := range tcell.KeyNames {
+		if strings.ToLower(name) == lcKeyName {
+			if strings.HasPrefix(name, "Ctrl-") {
+				mod = tcell.ModCtrl
 			}
 			return key, mod
 		}
 	}
 
-	if len(s) == 1 {
-		r := []rune(s)
+	// Then try one-rune variants
+	if len(keyName) == 1 {
+		r := []rune(keyName)
 		key = r[0]
+
 		return key, mod
 	}
 
-	s = strings.ToLower(s)
-	switch s {
-	case "arrowup", "uparrow", "up":
-		key = gocui.KeyArrowUp
-	case "arrowdown", "downarrow", "down":
-		key = gocui.KeyArrowDown
-	case "arrowleft", "leftarrow", "left":
-		key = gocui.KeyArrowLeft
-	case "arrowright", "rightarrow", "right":
-		key = gocui.KeyArrowRight
-	case "enter", "return":
-		key = gocui.KeyEnter
-	case "space", "spacebar":
-		key = gocui.KeySpace
-	case "esc", "escape":
-		key = gocui.KeyEsc
-	case "f1":
-		key = gocui.KeyF1
-	case "f2":
-		key = gocui.KeyF2
-	case "f3":
-		key = gocui.KeyF3
-	case "f4":
-		key = gocui.KeyF4
-	case "f5":
-		key = gocui.KeyF5
-	case "f6":
-		key = gocui.KeyF6
-	case "f7":
-		key = gocui.KeyF7
-	case "f8":
-		key = gocui.KeyF8
-	case "f9":
-		key = gocui.KeyF9
-	case "tab":
-		key = gocui.KeyTab
-	case "pageup", "pgup":
-		key = gocui.KeyPgup
-	case "pagedown", "pgdown", "pgdn":
-		key = gocui.KeyPgdn
-	case "home":
-		key = gocui.KeyHome
-	case "end":
-		key = gocui.KeyEnd
-	case "\\\\":
-		key = '\\'
+	if key == nil {
+		log.Debugf("Could not map key descriptio '%s' to key", s)
 	}
-
 	return key, mod
 }
 
@@ -336,6 +269,13 @@ func (ct *Cointop) SetKeybindingAction(shortcutKey string, action string) error
 	}
 
 	ct.SetKeybindingMod(key, mod, fn, view)
+
+	// Bind `shift+key` for uppercased character
+	r, isRune := key.(rune)
+	if isRune && unicode.IsUpper(r) {
+		ct.SetKeybindingMod(key, tcell.ModShift, fn, view)
+	}
+
 	return nil
 }
 
@@ -348,61 +288,83 @@ func (ct *Cointop) SetKeybindings() error {
 	}
 
 	// keys to force quit
-	ct.SetKeybindingMod(gocui.KeyCtrlC, gocui.ModNone, ct.Keyfn(ct.Quit), "")
-	ct.SetKeybindingMod(gocui.KeyCtrlZ, gocui.ModNone, ct.Keyfn(ct.Quit), "")
+	ct.SetKeybindingMod(tcell.KeyCtrlC, tcell.ModNone, ct.Keyfn(ct.Quit), "")
+	ct.SetKeybindingMod(tcell.KeyCtrlZ, tcell.ModNone, ct.Keyfn(ct.Quit), "")
 
 	// searchfield keys
-	ct.SetKeybindingMod(gocui.KeyEnter, gocui.ModNone, ct.Keyfn(ct.DoSearch), ct.Views.SearchField.Name())
-	ct.SetKeybindingMod(gocui.KeyEsc, gocui.ModNone, ct.Keyfn(ct.CancelSearch), ct.Views.SearchField.Name())
+	ct.SetKeybindingMod(tcell.KeyEnter, tcell.ModNone, ct.Keyfn(ct.DoSearch), ct.Views.SearchField.Name())
+	ct.SetKeybindingMod(tcell.KeyEsc, tcell.ModNone, ct.Keyfn(ct.CancelSearch), ct.Views.SearchField.Name())
 
 	// keys to quit help when open
-	ct.SetKeybindingMod(gocui.KeyEsc, gocui.ModNone, ct.Keyfn(ct.HideHelp), ct.Views.Menu.Name())
-	ct.SetKeybindingMod('q', gocui.ModNone, ct.Keyfn(ct.HideHelp), ct.Views.Menu.Name())
+	ct.SetKeybindingMod(tcell.KeyEsc, tcell.ModNone, ct.Keyfn(ct.HideHelp), ct.Views.Menu.Name())
+	ct.SetKeybindingMod('q', tcell.ModNone, ct.Keyfn(ct.HideHelp), ct.Views.Menu.Name())
 
 	// keys to quit portfolio update menu when open
-	ct.SetKeybindingMod(gocui.KeyEsc, gocui.ModNone, ct.Keyfn(ct.HidePortfolioUpdateMenu), ct.Views.Input.Name())
-	ct.SetKeybindingMod('q', gocui.ModNone, ct.Keyfn(ct.HidePortfolioUpdateMenu), ct.Views.Input.Name())
+	ct.SetKeybindingMod(tcell.KeyEsc, tcell.ModNone, ct.Keyfn(ct.HidePortfolioUpdateMenu), ct.Views.Input.Name())
+	ct.SetKeybindingMod('q', tcell.ModNone, ct.Keyfn(ct.HidePortfolioUpdateMenu), ct.Views.Input.Name())
 
 	// keys to quit convert menu when open
-	ct.SetKeybindingMod(gocui.KeyEsc, gocui.ModNone, ct.Keyfn(ct.HideConvertMenu), ct.Views.Menu.Name())
-	ct.SetKeybindingMod('q', gocui.ModNone, ct.Keyfn(ct.HideConvertMenu), ct.Views.Menu.Name())
+	ct.SetKeybindingMod(tcell.KeyEsc, tcell.ModNone, ct.Keyfn(ct.HideConvertMenu), ct.Views.Menu.Name())
+	ct.SetKeybindingMod('q', tcell.ModNone, ct.Keyfn(ct.HideConvertMenu), ct.Views.Menu.Name())
 
 	// keys to update portfolio holdings
-	ct.SetKeybindingMod(gocui.KeyEnter, gocui.ModNone, ct.Keyfn(ct.EnterKeyPressHandler), ct.Views.Input.Name())
+	ct.SetKeybindingMod(tcell.KeyEnter, tcell.ModNone, ct.Keyfn(ct.EnterKeyPressHandler), ct.Views.Input.Name())
 
+	// Work around issue with key-binding for '/' interfering with expressions
 	key, mod := ct.ParseKeys("/")
 	ct.DeleteKeybindingMod(key, mod, "")
 
 	// mouse events
-	ct.SetKeybindingMod(gocui.MouseRelease, gocui.ModNone, ct.Keyfn(ct.MouseRelease), "")
-	ct.SetKeybindingMod(gocui.MouseLeft, gocui.ModNone, ct.Keyfn(ct.MouseLeftClick), "")
-	ct.SetKeybindingMod(gocui.MouseMiddle, gocui.ModNone, ct.Keyfn(ct.MouseMiddleClick), "")
-	ct.SetKeybindingMod(gocui.MouseRight, gocui.ModNone, ct.Keyfn(ct.MouseRightClick), "")
-	ct.SetKeybindingMod(gocui.MouseWheelUp, gocui.ModNone, ct.Keyfn(ct.MouseWheelUp), "")
-	ct.SetKeybindingMod(gocui.MouseWheelDown, gocui.ModNone, ct.Keyfn(ct.MouseWheelDown), "")
+	ct.SetMousebindingMod(tcell.Button1, tcell.ModNone, ct.Keyfn(ct.MouseLeftClick), ct.Views.Table.Name()) // click to focus
+
+	// clicking table headers sorts table
+	ct.SetMousebindingMod(tcell.Button1, tcell.ModNone, ct.Keyfn(ct.TableHeaderMouseLeftClick), ct.Views.TableHeader.Name())
+	ct.SetMousebindingMod(tcell.Button1, tcell.ModNone, ct.Keyfn(ct.StatusbarMouseLeftClick), ct.Views.Statusbar.Name())
+	// debug mouse clicks
+	ct.SetMousebindingMod(tcell.Button1, tcell.ModNone, ct.Keyfn(ct.MouseDebug), "")
+
+	ct.SetMousebindingMod(tcell.WheelUp, tcell.ModNone, ct.Keyfn(ct.CursorUpOrPreviousPage), ct.Views.Table.Name())
+	ct.SetMousebindingMod(tcell.WheelDown, tcell.ModNone, ct.Keyfn(ct.CursorDownOrNextPage), ct.Views.Table.Name())
 
 	// character key press to select option
 	// TODO: use scrolling table
 	keys := ct.SortedSupportedCurrencyConversions()
 	for i, k := range keys {
-		ct.SetKeybindingMod(alphanumericcharacters[i], gocui.ModNone, ct.Keyfn(ct.SetCurrencyConverstionFn(k)), ct.Views.Menu.Name())
+		ct.SetKeybindingMod(alphanumericcharacters[i], tcell.ModNone, ct.Keyfn(ct.SetCurrencyConverstionFn(k)), ct.Views.Menu.Name())
 	}
+	ct.SetMousebindingMod(tcell.Button1, tcell.ModNone, ct.Keyfn(ct.ConversionMouseLeftClick), ct.Views.Menu.Name())
+	return nil
+}
 
+// MouseLeftClickDebug emit a debug message about which View and coordinates are in MouseClick
+// TODO: delete before merge
+func (ct *Cointop) MouseDebug() error {
+	v, x, y, err := ct.g.GetViewRelativeMousePosition(ct.g.CurrentEvent)
+	if err != nil {
+		return err
+	}
+	log.Debugf("XXX MouseDebug view=%s %d,%d", v.Name(), x, y)
 	return nil
 }
 
 // SetKeybindingMod sets the keybinding modifier key
-func (ct *Cointop) SetKeybindingMod(key interface{}, mod gocui.Modifier, callback func(g *gocui.Gui, v *gocui.View) error, view string) error {
+func (ct *Cointop) SetKeybindingMod(key interface{}, mod tcell.ModMask, callback func(g *gocui.Gui, v *gocui.View) error, view string) error {
+	// TODO: take EventKey?
 	var err error
 	switch t := key.(type) {
-	case gocui.Key:
-		err = ct.g.SetKeybinding(view, t, mod, callback)
+	case tcell.Key:
+		err = ct.g.SetKeybinding(view, t, 0, mod, callback)
 	case rune:
-		err = ct.g.SetKeybinding(view, t, mod, callback)
+		err = ct.g.SetKeybinding(view, tcell.KeyRune, t, mod, callback)
 	}
 	return err
 }
 
+// SetMousebindingMod adds a binding for a mouse eventdef
+func (ct *Cointop) SetMousebindingMod(btn tcell.ButtonMask, mod tcell.ModMask, callback func(g *gocui.Gui, v *gocui.View) error, view string) error {
+	return ct.g.SetMousebinding(view, btn, mod, callback)
+}
+
 // DeleteKeybinding ...
 func (ct *Cointop) DeleteKeybinding(shortcutKey string) error {
 	key, mod := ct.ParseKeys(shortcutKey)
@@ -410,13 +372,14 @@ func (ct *Cointop) DeleteKeybinding(shortcutKey string) error {
 }
 
 // DeleteKeybindingMod ...
-func (ct *Cointop) DeleteKeybindingMod(key interface{}, mod gocui.Modifier, view string) error {
+func (ct *Cointop) DeleteKeybindingMod(key interface{}, mod tcell.ModMask, view string) error {
+	// TODO: take EventKey
 	var err error
 	switch t := key.(type) {
-	case gocui.Key:
-		err = ct.g.DeleteKeybinding(view, t, mod)
+	case tcell.Key:
+		err = ct.g.DeleteKeybinding(view, t, 0, mod)
 	case rune:
-		err = ct.g.DeleteKeybinding(view, t, mod)
+		err = ct.g.DeleteKeybinding(view, tcell.KeyRune, t, mod)
 	}
 	return err
 }
diff --git a/cointop/layout.go b/cointop/layout.go
index 3800b24..344ab2b 100644
--- a/cointop/layout.go
+++ b/cointop/layout.go
@@ -58,8 +58,7 @@ func (ct *Cointop) layout() error {
 	} else {
 		if err := ct.ui.SetView(ct.Views.Marketbar, 0, topOffset-1, maxX, marketbarHeight+1); err != nil {
 			ct.Views.Marketbar.SetFrame(false)
-			ct.Views.Marketbar.SetFgColor(ct.colorscheme.GocuiFgColor(ct.Views.Marketbar.Name()))
-			ct.Views.Marketbar.SetBgColor(ct.colorscheme.GocuiBgColor(ct.Views.Marketbar.Name()))
+			ct.Views.Marketbar.SetStyle(ct.colorscheme.Style(ct.Views.Marketbar.Name()))
 			go func() {
 				ct.UpdateMarketbar()
 				_, found := ct.cache.Get(ct.Views.Marketbar.Name())
@@ -92,8 +91,7 @@ func (ct *Cointop) layout() error {
 		if err := ct.ui.SetView(ct.Views.Chart, 0, chartTopOffset, maxX, topOffset+chartHeight); err != nil {
 			ct.Views.Chart.Clear()
 			ct.Views.Chart.SetFrame(false)
-			ct.Views.Chart.SetFgColor(ct.colorscheme.GocuiFgColor(ct.Views.Chart.Name()))
-			ct.Views.Chart.SetBgColor(ct.colorscheme.GocuiBgColor(ct.Views.Chart.Name()))
+			ct.Views.Chart.SetStyle(ct.colorscheme.Style(ct.Views.Chart.Name()))
 			go func() {
 				ct.UpdateChart()
 				cachekey := ct.CompositeCacheKey("globaldata", "", "", ct.State.selectedChartRange)
@@ -124,8 +122,7 @@ func (ct *Cointop) layout() error {
 		topOffset = topOffset + chartHeight
 		if err := ct.ui.SetView(ct.Views.TableHeader, tableOffsetX, topOffset-1, maxX, topOffset+1); err != nil {
 			ct.Views.TableHeader.SetFrame(false)
-			ct.Views.TableHeader.SetFgColor(ct.colorscheme.GocuiFgColor(ct.Views.TableHeader.Name()))
-			ct.Views.TableHeader.SetBgColor(ct.colorscheme.GocuiBgColor(ct.Views.TableHeader.Name()))
+			ct.Views.TableHeader.SetStyle(ct.colorscheme.Style(ct.Views.TableHeader.Name()))
 			go ct.UpdateTableHeader()
 		}
 
@@ -133,8 +130,7 @@ func (ct *Cointop) layout() error {
 		if err := ct.ui.SetView(ct.Views.Table, tableOffsetX, topOffset-1, maxX, maxY-statusbarHeight); err != nil {
 			ct.Views.Table.SetFrame(false)
 			ct.Views.Table.SetHighlight(true)
-			ct.Views.Table.SetSelFgColor(ct.colorscheme.GocuiFgColor("table_row_active"))
-			ct.Views.Table.SetSelBgColor(ct.colorscheme.GocuiBgColor("table_row_active"))
+			ct.Views.Table.SetSelStyle(ct.colorscheme.Style("table_row_active"))
 			_, found := ct.cache.Get("allCoinsSlugMap")
 			if found {
 				ct.cache.Delete("allCoinsSlugMap")
@@ -149,8 +145,7 @@ func (ct *Cointop) layout() error {
 	if !ct.State.hideStatusbar {
 		if err := ct.ui.SetView(ct.Views.Statusbar, 0, maxY-statusbarHeight-1, maxX, maxY); err != nil {
 			ct.Views.Statusbar.SetFrame(false)
-			ct.Views.Statusbar.SetFgColor(ct.colorscheme.GocuiFgColor(ct.Views.Statusbar.Name()))
-			ct.Views.Statusbar.SetBgColor(ct.colorscheme.GocuiBgColor(ct.Views.Statusbar.Name()))
+			ct.Views.Statusbar.SetStyle(ct.colorscheme.Style(ct.Views.Statusbar.Name()))
 			go ct.UpdateStatusbar("")
 		}
 	} else {
@@ -166,22 +161,19 @@ func (ct *Cointop) layout() error {
 		ct.Views.SearchField.SetEditable(true)
 		ct.Views.SearchField.SetWrap(true)
 		ct.Views.SearchField.SetFrame(false)
-		ct.Views.SearchField.SetFgColor(ct.colorscheme.GocuiFgColor("searchbar"))
-		ct.Views.SearchField.SetBgColor(ct.colorscheme.GocuiBgColor("searchbar"))
+		ct.Views.SearchField.SetStyle(ct.colorscheme.Style("searchbar"))
 	}
 
 	if err := ct.ui.SetView(ct.Views.Menu, 1, 1, maxX-1, maxY-1); err != nil {
 		ct.Views.Menu.SetFrame(false)
-		ct.Views.Menu.SetFgColor(ct.colorscheme.GocuiFgColor("menu"))
-		ct.Views.Menu.SetBgColor(ct.colorscheme.GocuiBgColor("menu"))
+		ct.Views.Menu.SetStyle(ct.colorscheme.Style("menu"))
 	}
 
 	if err := ct.ui.SetView(ct.Views.Input, 3, 6, 30, 8); err != nil {
 		ct.Views.Input.SetFrame(true)
 		ct.Views.Input.SetEditable(true)
 		ct.Views.Input.SetWrap(true)
-		ct.Views.Input.SetFgColor(ct.colorscheme.GocuiFgColor("menu"))
-		ct.Views.Input.SetBgColor(ct.colorscheme.GocuiBgColor("menu"))
+		ct.Views.Input.SetStyle(ct.colorscheme.Style("menu"))
 
 		// run only once on init.
 		// this bit of code should be at the bottom
diff --git a/cointop/marketbar.go b/cointop/marketbar.go
index bfaeb2c..d69f7ab 100644
--- a/cointop/marketbar.go
+++ b/cointop/marketbar.go
@@ -6,8 +6,9 @@ import (
 	"strings"
 	"time"
 
+	fcolor "github.com/fatih/color"
+
 	"github.com/cointop-sh/cointop/pkg/api/types"
-	"github.com/cointop-sh/cointop/pkg/color"
 	"github.com/cointop-sh/cointop/pkg/humanize"
 	"github.com/cointop-sh/cointop/pkg/pad"
 	"github.com/cointop-sh/cointop/pkg/ui"
@@ -28,7 +29,9 @@ func (ct *Cointop) UpdateMarketbar() error {
 	maxX := ct.Width()
 	logo := "❯❯❯cointop"
 	if ct.colorschemeName == "cointop" {
-		logo = fmt.Sprintf("%s%s%s%s", color.Green("❯"), color.Cyan("❯"), color.Green("❯"), color.Cyan("cointop"))
+		Green := fcolor.New(fcolor.FgGreen).SprintFunc()
+		Cyan := fcolor.New(fcolor.FgCyan).SprintFunc()
+		logo = fmt.Sprintf("%s%s%s%s", Green("❯"), Cyan("❯"), Green("❯"), Cyan("cointop"))
 	}
 	var content string
 
diff --git a/cointop/navigation.go b/cointop/navigation.go
index e5b4b2e..12bcc81 100644
--- a/cointop/navigation.go
+++ b/cointop/navigation.go
@@ -560,34 +560,9 @@ func (ct *Cointop) TableScrollRight() error {
 	return nil
 }
 
-// MouseRelease is called on mouse releae event
-func (ct *Cointop) MouseRelease() error {
-	return nil
-}
-
 // MouseLeftClick is called on mouse left click event
 func (ct *Cointop) MouseLeftClick() error {
-	return nil
-}
-
-// MouseMiddleClick is called on mouse middle click event
-func (ct *Cointop) MouseMiddleClick() error {
-	return nil
-}
-
-// MouseRightClick is called on mouse right click event
-func (ct *Cointop) MouseRightClick() error {
-	return ct.OpenLink()
-}
-
-// MouseWheelUp is called on mouse wheel up event
-func (ct *Cointop) MouseWheelUp() error {
-	return nil
-}
-
-// MouseWheelDown is called on mouse wheel down event
-func (ct *Cointop) MouseWheelDown() error {
-	return nil
+	return ct.g.SetCursorFromCurrentMouseEvent()
 }
 
 // TableRowsLen returns the number of table row entries
diff --git a/cointop/quit.go b/cointop/quit.go
index 2f30473..e59961b 100644
--- a/cointop/quit.go
+++ b/cointop/quit.go
@@ -3,7 +3,7 @@ package cointop
 import (
 	"os"
 
-	"github.com/miguelmota/gocui"
+	"github.com/cointop-sh/cointop/pkg/gocui"
 	log "github.com/sirupsen/logrus"
 )
 
diff --git a/cointop/sort.go b/cointop/sort.go
index f45b2f7..e8fd44d 100644
--- a/cointop/sort.go
+++ b/cointop/sort.go
@@ -4,7 +4,7 @@ import (
 	"sort"
 	"sync"
 
-	"github.com/miguelmota/gocui"
+	"github.com/cointop-sh/cointop/pkg/gocui"
 	log "github.com/sirupsen/logrus"
 )
 
diff --git a/cointop/statusbar.go b/cointop/statusbar.go
index 5bd1e29..2674c5f 100644
--- a/cointop/statusbar.go
+++ b/cointop/statusbar.go
@@ -2,6 +2,8 @@ package cointop
 
 import (
 	"fmt"
+	"regexp"
+	"strings"
 	"unicode/utf8"
 
 	"github.com/cointop-sh/cointop/pkg/open"
@@ -83,3 +85,51 @@ func (ct *Cointop) RefreshRowLink() error {
 
 	return nil
 }
+
+// StatusbarMouseLeftClick is called on mouse left click event
+func (ct *Cointop) StatusbarMouseLeftClick() error {
+	_, x, _, err := ct.g.GetViewRelativeMousePosition(ct.g.CurrentEvent)
+	if err != nil {
+		return err
+	}
+
+	// Parse the statusbar text to identify hotspots and actions
+	b := make([]byte, 1000)
+	ct.Views.Statusbar.Rewind()
+	if n, err := ct.Views.Statusbar.Read(b); err != nil {
+		return err
+	} else {
+		// Find all the "[X]word" substrings, then look for the one that was clicked
+		matches := regexp.MustCompile(`\[.*?\]\w+`).FindAllIndex(b[:n], -1)
+		for _, match := range matches {
+			if x >= match[0] && x <= match[1] {
+				s := string(b[match[0]:match[1]])
+				word := strings.Split(s, "]")[1] // matches the \w+ from regex
+
+				// Quit/Return Help Chart Range Search Convert Favorites Portfolio Edit(portfolio) Unfavorite
+				switch word {
+				case "Help":
+					ct.ToggleHelp()
+				case "Range":
+					// left hand edge of "Range" is Prev, the rest is Next
+					if x-match[0] < 3 {
+						ct.PrevChartRange()
+					} else {
+						ct.NextChartRange()
+					}
+				case "Search":
+					ct.OpenSearch()
+				case "Convert":
+					ct.ToggleConvertMenu()
+				case "Favorites":
+					ct.ToggleSelectedView(FavoritesView)
+				case "Portfolio":
+					ct.ToggleSelectedView(PortfolioView)
+				}
+
+			}
+		}
+	}
+
+	return nil
+}
diff --git a/cointop/table_header.go b/cointop/table_header.go
index cc71b24..0f1b984 100644
--- a/cointop/table_header.go
+++ b/cointop/table_header.go
@@ -204,6 +204,7 @@ func (ct *Cointop) UpdateTableHeader() error {
 
 	cols := ct.GetActiveTableHeaders()
 	var headers []string
+	var columnLookup []string // list of column-names or ""
 	for i, col := range cols {
 		hc, ok := HeaderColumns[col]
 		if !ok {
@@ -247,15 +248,27 @@ func (ct *Cointop) UpdateTableHeader() error {
 		if leftAlign {
 			padfn = pad.Right
 		}
+		padded := padfn(label, width+(1-padLeft), " ")
 		colStr := fmt.Sprintf(
 			"%s%s%s",
 			strings.Repeat(" ", padLeft),
-			colorfn(padfn(label, width+(1-padLeft), " ")),
+			colorfn(padded),
 			strings.Repeat(" ", 1),
 		)
 		headers = append(headers, colStr)
+
+		// Create a lookup table (pos to column)
+		for i := 0; i < padLeft; i++ {
+			columnLookup = append(columnLookup, "")
+		}
+		for i := 0; i < utf8.RuneCountInString(padded); i++ {
+			columnLookup = append(columnLookup, hc.Slug)
+		}
+		columnLookup = append(columnLookup, "")
 	}
 
+	ct.State.columnLookup = columnLookup
+
 	ct.UpdateUI(func() error {
 		return ct.Views.TableHeader.Update(strings.Join(headers, ""))
 	})
@@ -263,6 +276,21 @@ func (ct *Cointop) UpdateTableHeader() error {
 	return nil
 }
 
+// MouseLeftClick is called on mouse left click event
+func (ct *Cointop) TableHeaderMouseLeftClick() error {
+	_, x, _, err := ct.g.GetViewRelativeMousePosition(ct.g.CurrentEvent)
+	if err != nil {
+		return err
+	}
+	// Figure out which column they clicked on
+	if ct.State.columnLookup[x] != "" {
+		fn := ct.Sortfn(ct.State.columnLookup[x], false)
+		return fn(ct.g, ct.Views.Table.Backing())
+	}
+
+	return nil
+}
+
 // SetTableColumnAlignLeft sets the column alignment direction for header
 func (ct *Cointop) SetTableColumnAlignLeft(header string, alignLeft bool) {
 	ct.State.tableColumnAlignLeft.Store(header, alignLeft)
diff --git a/cointop/update.go b/cointop/update.go
index 8f0a892..637d0c1 100644
--- a/cointop/update.go
+++ b/cointop/update.go
@@ -1,7 +1,7 @@
 package cointop
 
 import (
-	"github.com/miguelmota/gocui"
+	"github.com/cointop-sh/cointop/pkg/gocui"
 	log "github.com/sirupsen/logrus"
 )
 
diff --git a/docs/content/colorschemes.md b/docs/content/colorschemes.md
index b27bb43..c039f19 100644
--- a/docs/content/colorschemes.md
+++ b/docs/content/colorschemes.md
@@ -16,6 +16,8 @@ $ cd ~/.config/cointop
 $ git clone git@github.com:cointop-sh/colors.git
 ```
 
+Note: depending on your system, this may not be the correct location. The "colors" directory needs to go in the same place as your config.toml file.
+
 Then edit your config `~/.config/cointop/config.toml` and set the colorscheme you want to use:
 
 ```toml
diff --git a/docs/content/faq.md b/docs/content/faq.md
index 9acbf5c..a8ac596 100644
--- a/docs/content/faq.md
+++ b/docs/content/faq.md
@@ -42,13 +42,18 @@ draft: false
 
   Copy an existing [colorscheme](https://github.com/cointop-sh/colors/blob/master/cointop.toml) to `~/.config/cointop/colors/` and customize the colors. Then run cointop with `--colorscheme <colorscheme>` to use the colorscheme.
 
-## How do I make the background color transparent?
+  You can use any of the 250-odd X11 colors by name. See https://en.wikipedia.org/wiki/X11_color_names (use lower-case and without spaces).   You can also include 24-bit colors by using the #rrggbb hex code.
 
-  Change the background color options in the colorscheme file to `default` to use the system default color, eg. `base_bg = "default"`
+  You can also define values in the colorscheme file, and reference them from throughout the file, using the following syntax:
 
-## Why don't colorschemes support RGB or hex colors?
+  ```toml
+  define_base03 = "#002b36"
+  menu_header_fg = "$base03"
+  ```
 
-  Some of the cointop underlying rendering libraries don't support true colors. See [issue](https://github.com/nsf/termbox/issues/37).
+## How do I make the background color transparent?
+
+  Change the background color options in the colorscheme file to `default` to use the system default color, eg. `base_bg = "default"`
 
 ## Where is the config file located?
 
diff --git a/go.mod b/go.mod
index f4fc8c6..3043f50 100644
--- a/go.mod
+++ b/go.mod
@@ -8,6 +8,7 @@ require (
 	github.com/antonmedv/expr v1.9.0
 	github.com/creack/pty v1.1.16
 	github.com/fatih/color v1.13.0
+	github.com/gdamore/tcell/v2 v2.4.0
 	github.com/gen2brain/beeep v0.0.0-20210529141713-5586760f0cc1
 	github.com/gliderlabs/ssh v0.3.3
 	github.com/goodsign/monday v1.0.0
@@ -15,8 +16,6 @@ require (
 	github.com/maruel/panicparse v1.6.1
 	github.com/mattn/go-runewidth v0.0.13
 	github.com/miguelmota/go-coinmarketcap v0.1.8
-	github.com/miguelmota/gocui v0.4.2
-	github.com/miguelmota/termbox-go v0.0.0-20191229070316-58d4fcbce2a7
 	github.com/mitchellh/go-wordwrap v1.0.1
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/patrickmn/go-cache v2.1.0+incompatible
@@ -30,11 +29,13 @@ require (
 require (
 	github.com/anaskhan96/soup v1.0.1 // indirect
 	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be // indirect
+	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/go-toast/toast v0.0.0-20190211030409-01e6764cf0a4 // indirect
 	github.com/godbus/dbus/v5 v5.0.4 // indirect
 	github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 // indirect
 	github.com/gopherjs/gopherwasm v1.1.0 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.0.3 // indirect
 	github.com/mattn/go-colorable v0.1.9 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d // indirect
@@ -43,4 +44,5 @@ require (
 	github.com/tadvi/systray v0.0.0-20190226123456-11a2b8fa57af // indirect
 	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4 // indirect
 	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
+	golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf // indirect
 )
diff --git a/go.sum b/go.sum
index b727224..0852068 100644
--- a/go.sum
+++ b/go.sum
@@ -89,8 +89,12 @@ github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYF
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fyne-io/mobile v0.1.2-0.20201127155338-06aeb98410cc/go.mod h1:/kOrWrZB6sasLbEy2JIvr4arEzQTXBTZGb3Y96yWbHY=
 github.com/fyne-io/mobile v0.1.2/go.mod h1:/kOrWrZB6sasLbEy2JIvr4arEzQTXBTZGb3Y96yWbHY=
+github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/gdamore/tcell v1.3.0 h1:r35w0JBADPZCVQijYebl6YMWWtHRqVEGt7kL2eBADRM=
 github.com/gdamore/tcell v1.3.0/go.mod h1:Hjvr+Ofd+gLglo7RYKxxnzCBmev3BzsS67MebKS4zMM=
+github.com/gdamore/tcell/v2 v2.4.0 h1:W6dxJEmaxYvhICFoTY3WrLLEXsQ11SaFnKGVEXW57KM=
+github.com/gdamore/tcell/v2 v2.4.0/go.mod h1:cTTuF84Dlj/RqmaCIV5p4w8uG1zWdk0SF6oBpwHp4fU=
 github.com/gen2brain/beeep v0.0.0-20210529141713-5586760f0cc1 h1:Xh9mvwEmhbdXlRSsgn+N0zj/NqnKvpeqL08oKDHln2s=
 github.com/gen2brain/beeep v0.0.0-20210529141713-5586760f0cc1/go.mod h1:ElSskYZe3oM8kThaHGJ+kiN2yyUMVXMZ7WxF9QqLDS8=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -217,6 +221,7 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/lucasb-eyer/go-colorful v1.0.2/go.mod h1:0MS4r+7BZKSJ5mw4/S5MPN+qHFF1fYclkSPilDOKW0s=
+github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
 github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/lucor/goinfo v0.0.0-20200401173949-526b5363a13a/go.mod h1:ORP3/rB5IsulLEBwQZCJyyV6niqmI7P4EWSmkug+1Ng=
 github.com/magiconair/properties v1.8.5/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
@@ -232,19 +237,15 @@ github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Ky
 github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
 github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
 github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
-github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.8/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.10/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
 github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4OSgU=
 github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
 github.com/miekg/dns v1.0.14/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
 github.com/miguelmota/go-coinmarketcap v0.1.8 h1:rZhB7xs1j7qxxd1zftjADhAv6ECJQVhBom1dh3zURKY=
 github.com/miguelmota/go-coinmarketcap v0.1.8/go.mod h1:hBjej1IiB5+pfj+0cZhnxRkAc2bgky8qWLhCJTQ3zjw=
-github.com/miguelmota/gocui v0.4.2 h1:nMYnYn3RjV7FlWFcidQa9eAkX3kT7XMI6yJMxEkAz6s=
-github.com/miguelmota/gocui v0.4.2/go.mod h1:wVtmhuLR+VAS9VRBIJZBNJS9IgH+9QOZ/m/MvRarOZ4=
-github.com/miguelmota/termbox-go v0.0.0-20191229070316-58d4fcbce2a7 h1:sZmjSV25xMXIGAaATVuOtC9VtGHMydXpd9OejNaTxQE=
-github.com/miguelmota/termbox-go v0.0.0-20191229070316-58d4fcbce2a7/go.mod h1:DRZE481VrAygaB/4DTvG0To/HsucthXAu0sY1Exb7gw=
 github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceTlRvqc=
 github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-testing-interface v1.0.0/go.mod h1:kRemZodwjscx+RGhAo8eIhFbs2+BFgRtFPeD/KE+zxI=
@@ -495,8 +496,9 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf h1:MZ2shdL+ZM/XzY3ZGOnh4Nlpnxz5GSOhOmtHo3iPU6M=
+golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
diff --git a/pkg/color/color.go b/pkg/color/color.go
deleted file mode 100644
index 1cdaf22..0000000
--- a/pkg/color/color.go
+++ /dev/null
@@ -1,39 +0,0 @@
-package color
-
-import "github.com/fatih/color"
-
-// Color struct
-type Color color.Color
-
-var (
-	// Bold color
-	Bold = color.New(color.Bold).SprintFunc()
-	// Black color
-	Black = color.New(color.FgBlack).SprintFunc()
-	// BlackBg color
-	BlackBg = color.New(color.BgBlack, color.FgWhite).SprintFunc()
-	// White color
-	White = color.New(color.FgWhite).SprintFunc()
-	// WhiteBold bold
-	WhiteBold = color.New(color.FgWhite, color.Bold).SprintFunc()
-	// Yellow color
-	Yellow = color.New(color.FgYellow).SprintFunc()
-	// YellowBold color
-	YellowBold = color.New(color.FgYellow, color.Bold).SprintFunc()
-	// YellowBg color
-	YellowBg = color.New(color.BgYellow, color.FgBlack).SprintFunc()
-	// Green color
-	Green = color.New(color.FgGreen).SprintFunc()
-	// GreenBg color
-	GreenBg = color.New(color.BgGreen, color.FgBlack).SprintFunc()
-	// Red color
-	Red = color.New(color.FgRed).SprintFunc()
-	// Cyan color
-	Cyan = color.New(color.FgCyan).SprintFunc()
-	// CyanBg color
-	CyanBg = color.New(color.BgCyan, color.FgBlack).SprintFunc()
-	// Blue color
-	Blue = color.New(color.FgBlue).SprintFunc()
-	// BlueBg color
-	BlueBg = color.New(color.BgBlue).SprintFunc()
-)
diff --git a/vendor/github.com/miguelmota/gocui/.gitignore b/pkg/gocui/.gitignore
similarity index 100%
rename from vendor/github.com/miguelmota/gocui/.gitignore
rename to pkg/gocui/.gitignore
diff --git a/vendor/github.com/miguelmota/gocui/AUTHORS b/pkg/gocui/AUTHORS
similarity index 100%
rename from vendor/github.com/miguelmota/gocui/AUTHORS
rename to pkg/gocui/AUTHORS
diff --git a/vendor/github.com/miguelmota/gocui/LICENSE b/pkg/gocui/LICENSE
similarity index 100%
rename from vendor/github.com/miguelmota/gocui/LICENSE
rename to pkg/gocui/LICENSE
diff --git a/vendor/github.com/miguelmota/gocui/README.md b/pkg/gocui/README.md
similarity index 100%
rename from vendor/github.com/miguelmota/gocui/README.md
rename to pkg/gocui/README.md
diff --git a/vendor/github.com/miguelmota/gocui/edit.go b/pkg/gocui/edit.go
similarity index 90%
rename from vendor/github.com/miguelmota/gocui/edit.go
rename to pkg/gocui/edit.go
index e1b19c2..d2b23c6 100644
--- a/vendor/github.com/miguelmota/gocui/edit.go
+++ b/pkg/gocui/edit.go
@@ -4,22 +4,26 @@
 
 package gocui
 
-import "errors"
+import (
+	"errors"
+
+	"github.com/gdamore/tcell/v2"
+)
 
 const maxInt = int(^uint(0) >> 1)
 
 // Editor interface must be satisfied by gocui editors.
 type Editor interface {
-	Edit(v *View, key Key, ch rune, mod Modifier)
+	Edit(v *View, key tcell.Key, ch rune, mod tcell.ModMask)
 }
 
 // The EditorFunc type is an adapter to allow the use of ordinary functions as
 // Editors. If f is a function with the appropriate signature, EditorFunc(f)
 // is an Editor object that calls f.
-type EditorFunc func(v *View, key Key, ch rune, mod Modifier)
+type EditorFunc func(v *View, key tcell.Key, ch rune, mod tcell.ModMask)
 
 // Edit calls f(v, key, ch, mod)
-func (f EditorFunc) Edit(v *View, key Key, ch rune, mod Modifier) {
+func (f EditorFunc) Edit(v *View, key tcell.Key, ch rune, mod tcell.ModMask) {
 	f(v, key, ch, mod)
 }
 
@@ -27,27 +31,27 @@ func (f EditorFunc) Edit(v *View, key Key, ch rune, mod Modifier) {
 var DefaultEditor Editor = EditorFunc(simpleEditor)
 
 // simpleEditor is used as the default gocui editor.
-func simpleEditor(v *View, key Key, ch rune, mod Modifier) {
+func simpleEditor(v *View, key tcell.Key, ch rune, mod tcell.ModMask) {
 	switch {
-	case ch != 0 && mod == 0:
+	case key == tcell.KeyRune && ch != 0 && mod == 0:
 		v.EditWrite(ch)
-	case key == KeySpace:
+	case key == ' ':
 		v.EditWrite(' ')
-	case key == KeyBackspace || key == KeyBackspace2:
+	case key == tcell.KeyBackspace || key == tcell.KeyBackspace2:
 		v.EditDelete(true)
-	case key == KeyDelete:
+	case key == tcell.KeyDelete:
 		v.EditDelete(false)
-	case key == KeyInsert:
+	case key == tcell.KeyInsert:
 		v.Overwrite = !v.Overwrite
-	case key == KeyEnter:
+	case key == tcell.KeyEnter:
 		v.EditNewLine()
-	case key == KeyArrowDown:
+	case key == tcell.KeyDown:
 		v.MoveCursor(0, 1, false)
-	case key == KeyArrowUp:
+	case key == tcell.KeyUp:
 		v.MoveCursor(0, -1, false)
-	case key == KeyArrowLeft:
+	case key == tcell.KeyLeft:
 		v.MoveCursor(-1, 0, false)
-	case key == KeyArrowRight:
+	case key == tcell.KeyRight:
 		v.MoveCursor(1, 0, false)
 	}
 }
@@ -265,9 +269,8 @@ func (v *View) writeRune(x, y int, ch rune) error {
 		copy(v.lines[y][x+1:], v.lines[y][x:])
 	}
 	v.lines[y][x] = cell{
-		fgColor: v.FgColor,
-		bgColor: v.BgColor,
-		chr:     ch,
+		style: v.Style,
+		chr:   ch,
 	}
 
 	return nil
diff --git a/vendor/github.com/miguelmota/gocui/escape.go b/pkg/gocui/escape.go
similarity index 54%
rename from vendor/github.com/miguelmota/gocui/escape.go
rename to pkg/gocui/escape.go
index ec31bbe..894d571 100644
--- a/vendor/github.com/miguelmota/gocui/escape.go
+++ b/pkg/gocui/escape.go
@@ -7,14 +7,16 @@ package gocui
 import (
 	"errors"
 	"strconv"
+
+	"github.com/gdamore/tcell/v2"
 )
 
 type escapeInterpreter struct {
-	state                  escapeState
-	curch                  rune
-	csiParam               []string
-	curFgColor, curBgColor Attribute
-	mode                   OutputMode
+	state    escapeState
+	curch    rune
+	csiParam []string
+	curStyle tcell.Style
+	// mode                   OutputMode
 }
 
 type escapeState int
@@ -54,12 +56,11 @@ func (ei *escapeInterpreter) runes() []rune {
 
 // newEscapeInterpreter returns an escapeInterpreter that will be able to parse
 // terminal escape sequences.
-func newEscapeInterpreter(mode OutputMode) *escapeInterpreter {
+func newEscapeInterpreter() *escapeInterpreter {
 	ei := &escapeInterpreter{
-		state:      stateNone,
-		curFgColor: ColorDefault,
-		curBgColor: ColorDefault,
-		mode:       mode,
+		state:    stateNone,
+		curStyle: tcell.StyleDefault,
+		// mode:       mode,
 	}
 	return ei
 }
@@ -67,8 +68,7 @@ func newEscapeInterpreter(mode OutputMode) *escapeInterpreter {
 // reset sets the escapeInterpreter in initial state.
 func (ei *escapeInterpreter) reset() {
 	ei.state = stateNone
-	ei.curFgColor = ColorDefault
-	ei.curBgColor = ColorDefault
+	ei.curStyle = tcell.StyleDefault
 	ei.csiParam = nil
 }
 
@@ -120,12 +120,13 @@ func (ei *escapeInterpreter) parseOne(ch rune) (isEscape bool, err error) {
 			return true, nil
 		case ch == 'm':
 			var err error
-			switch ei.mode {
-			case OutputNormal:
-				err = ei.outputNormal()
-			case Output256:
-				err = ei.output256()
-			}
+			err = ei.parseEscapeParams()
+			// switch ei.mode {
+			// case OutputNormal:
+			// 	err = ei.outputNormal()
+			// case Output256:
+			// 	err = ei.output256()
+			// }
 			if err != nil {
 				return false, errCSIParseError
 			}
@@ -140,90 +141,72 @@ func (ei *escapeInterpreter) parseOne(ch rune) (isEscape bool, err error) {
 	return false, nil
 }
 
-// outputNormal provides 8 different colors:
-//   black, red, green, yellow, blue, magenta, cyan, white
-func (ei *escapeInterpreter) outputNormal() error {
-	for _, param := range ei.csiParam {
-		p, err := strconv.Atoi(param)
-		if err != nil {
+// parseEscapeParams interprets an escape sequence as a style modifier
+// allows you to leverage the 256-colors terminal mode:
+//   0x01 - 0x08: the 8 colors as in OutputNormal (black, red, green, yellow, blue, magenta, cyan, white)
+//   0x09 - 0x10: Color* | AttrBold
+//   0x11 - 0xe8: 216 different colors
+//   0xe9 - 0x1ff: 24 different shades of grey
+// see https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
+// see https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters
+// 256-colors: ESC[ 38;5;${ID}m   # foreground
+// 256-colors: ESC[ 48;5;${ID}m   # background
+// 24-bit ESC[ 38;2;⟨r⟩;⟨g⟩;⟨b⟩ m Select RGB foreground color
+// 24-bit ESC[ 48;2;⟨r⟩;⟨g⟩;⟨b⟩ m Select RGB background color
+func (ei *escapeInterpreter) parseEscapeParams() error {
+	// TODO: cache escape -> Style
+	// convert params to int
+	params := make([]int, len(ei.csiParam))
+	for i, param := range ei.csiParam {
+		if p, err := strconv.Atoi(param); err == nil {
+			params[i] = p
+		} else {
 			return errCSIParseError
 		}
+	}
 
+	// consume elements of params until done
+	pos := 0
+	for ok := true; ok; ok = pos < len(params) {
+		p := params[pos]
 		switch {
 		case p >= 30 && p <= 37:
-			ei.curFgColor = Attribute(p - 30 + 1)
+			ei.curStyle = ei.curStyle.Foreground(tcell.PaletteColor(p - 30))
 		case p == 39:
-			ei.curFgColor = ColorDefault
+			ei.curStyle = ei.curStyle.Foreground(tcell.ColorDefault)
 		case p >= 40 && p <= 47:
-			ei.curBgColor = Attribute(p - 40 + 1)
+			ei.curStyle = ei.curStyle.Background(tcell.PaletteColor(p - 40))
 		case p == 49:
-			ei.curBgColor = ColorDefault
+			ei.curStyle = ei.curStyle.Background(tcell.ColorDefault)
 		case p == 1:
-			ei.curFgColor |= AttrBold
+			ei.curStyle = ei.curStyle.Bold(true)
 		case p == 4:
-			ei.curFgColor |= AttrUnderline
+			ei.curStyle = ei.curStyle.Underline(true)
 		case p == 7:
-			ei.curFgColor |= AttrReverse
+			ei.curStyle = ei.curStyle.Reverse(true)
 		case p == 0:
-			ei.curFgColor = ColorDefault
-			ei.curBgColor = ColorDefault
-		}
-	}
-
-	return nil
-}
-
-// output256 allows you to leverage the 256-colors terminal mode:
-//   0x01 - 0x08: the 8 colors as in OutputNormal
-//   0x09 - 0x10: Color* | AttrBold
-//   0x11 - 0xe8: 216 different colors
-//   0xe9 - 0x1ff: 24 different shades of grey
-func (ei *escapeInterpreter) output256() error {
-	if len(ei.csiParam) < 3 {
-		return ei.outputNormal()
-	}
-
-	mode, err := strconv.Atoi(ei.csiParam[1])
-	if err != nil {
-		return errCSIParseError
-	}
-	if mode != 5 {
-		return ei.outputNormal()
-	}
-
-	fgbg, err := strconv.Atoi(ei.csiParam[0])
-	if err != nil {
-		return errCSIParseError
-	}
-	color, err := strconv.Atoi(ei.csiParam[2])
-	if err != nil {
-		return errCSIParseError
-	}
-
-	switch fgbg {
-	case 38:
-		ei.curFgColor = Attribute(color + 1)
-
-		for _, param := range ei.csiParam[3:] {
-			p, err := strconv.Atoi(param)
-			if err != nil {
-				return errCSIParseError
+			ei.curStyle = tcell.StyleDefault
+		case p == 38 || p == 48: // 256-color or 24-bit
+			// parse mode and additional params to generate a color
+			mode := params[pos+1] // second param - 2 or 5
+			var x tcell.Color
+			if mode == 5 { // 256 color
+				x = tcell.PaletteColor(params[pos+2] + 1)
+				pos += 2 // two additional (5+index)
+			} else if mode == 2 { // 24-bit
+				x = tcell.NewRGBColor(int32(params[pos+2]), int32(params[pos+3]), int32(params[pos+4]))
+				pos += 4 // four additional (2+r/g/b)
+			} else {
+				return errCSIParseError // invalid mode
 			}
-
-			switch {
-			case p == 1:
-				ei.curFgColor |= AttrBold
-			case p == 4:
-				ei.curFgColor |= AttrUnderline
-			case p == 7:
-				ei.curFgColor |= AttrReverse
+			if p == 38 {
+				ei.curStyle = ei.curStyle.Foreground(x)
+			} else {
+				ei.curStyle = ei.curStyle.Background(x)
 			}
 		}
-	case 48:
-		ei.curBgColor = Attribute(color + 1)
-	default:
-		return errCSIParseError
-	}
 
+		pos += 1 // move along 1 by default
+	}
 	return nil
 }
diff --git a/pkg/gocui/eventbinding.go b/pkg/gocui/eventbinding.go
new file mode 100644
index 0000000..875fcaa
--- /dev/null
+++ b/pkg/gocui/eventbinding.go
@@ -0,0 +1,64 @@
+// Copyright 2014 The gocui Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package gocui
+
+import (
+	"github.com/gdamore/tcell/v2"
+)
+
+// eventBinding are used to link a given key-press event with a handler.
+type eventBinding struct {
+	viewName string
+	ev       tcell.Event // ignore the Time
+	handler  func(*Gui, *View) error
+}
+
+// newKeybinding returns a new eventBinding object for a key event.
+func newKeybinding(viewname string, key tcell.Key, ch rune, mod tcell.ModMask, handler func(*Gui, *View) error) (kb *eventBinding) {
+	kb = &eventBinding{
+		viewName: viewname,
+		ev:       tcell.NewEventKey(key, ch, mod),
+		handler:  handler,
+	}
+	return kb
+}
+
+// newKeybinding returns a new eventBinding object for a mouse event.
+func newMouseBinding(viewname string, btn tcell.ButtonMask, mod tcell.ModMask, handler func(*Gui, *View) error) (kb *eventBinding) {
+	kb = &eventBinding{
+		viewName: viewname,
+		ev:       tcell.NewEventMouse(0, 0, btn, mod),
+		handler:  handler,
+	}
+	return kb
+}
+
+func (kb *eventBinding) matchEvent(e tcell.Event) bool {
+	// TODO: check mask not ==mod?
+	switch tev := e.(type) {
+	case *tcell.EventKey:
+		if kbe, ok := kb.ev.(*tcell.EventKey); ok {
+			if tev.Key() == tcell.KeyRune {
+				return tev.Key() == kbe.Key() && tev.Rune() == kbe.Rune() && tev.Modifiers() == kbe.Modifiers()
+			}
+			return tev.Key() == kbe.Key() && tev.Modifiers() == kbe.Modifiers()
+		}
+
+	case *tcell.EventMouse:
+		if kbe, ok := kb.ev.(*tcell.EventMouse); ok {
+			return kbe.Buttons() == tev.Buttons() && kbe.Modifiers() == tev.Modifiers()
+		}
+
+	}
+	return false
+}
+
+// matchView returns if the eventBinding matches the current view.
+func (kb *eventBinding) matchView(v *View) bool {
+	if kb.viewName == "" {
+		return true
+	}
+	return v != nil && kb.viewName == v.name
+}
diff --git a/vendor/github.com/miguelmota/gocui/gui.go b/pkg/gocui/gui.go
similarity index 58%
rename from vendor/github.com/miguelmota/gocui/gui.go
rename to pkg/gocui/gui.go
index b8461d8..7757296 100644
--- a/vendor/github.com/miguelmota/gocui/gui.go
+++ b/pkg/gocui/gui.go
@@ -7,7 +7,7 @@ package gocui
 import (
 	"errors"
 
-	"github.com/miguelmota/termbox-go"
+	"github.com/gdamore/tcell/v2"
 )
 
 var (
@@ -19,35 +19,36 @@ var (
 )
 
 // OutputMode represents the terminal's output mode (8 or 256 colors).
-type OutputMode termbox.OutputMode
+// type OutputMode termbox.OutputMode // TODO: die
 
-const (
-	// OutputNormal provides 8-colors terminal mode.
-	OutputNormal = OutputMode(termbox.OutputNormal)
+// const ( // TODO: die
+// 	// OutputNormal provides 8-colors terminal mode.
+// 	OutputNormal = OutputMode(termbox.OutputNormal)
 
-	// Output256 provides 256-colors terminal mode.
-	Output256 = OutputMode(termbox.Output256)
-)
+// 	// Output256 provides 256-colors terminal mode.
+// 	Output256 = OutputMode(termbox.Output256)
+// )
 
 // Gui represents the whole User Interface, including the views, layouts
-// and keybindings.
+// and eventBindings.
 type Gui struct {
-	tbEvents    chan termbox.Event
-	userEvents  chan userEvent
-	views       []*View
-	currentView *View
-	managers    []Manager
-	keybindings []*keybinding
-	maxX, maxY  int
-	outputMode  OutputMode
+	tbEvents      chan tcell.Event
+	userEvents    chan userEvent
+	views         []*View
+	currentView   *View
+	managers      []Manager
+	eventBindings []*eventBinding
+	maxX, maxY    int
+	// outputMode    OutputMode // TODO: die
+	screen tcell.Screen
 
 	// BgColor and FgColor allow to configure the background and foreground
 	// colors of the GUI.
-	BgColor, FgColor Attribute
+	Style tcell.Style
 
 	// SelBgColor and SelFgColor allow to configure the background and
 	// foreground colors of the frame of the current view.
-	SelBgColor, SelFgColor Attribute
+	SelStyle tcell.Style
 
 	// If Highlight is true, Sel{Bg,Fg}Colors will be used to draw the
 	// frame of the current view.
@@ -66,26 +67,36 @@ type Gui struct {
 	// If ASCII is true then use ASCII instead of unicode to draw the
 	// interface. Using ASCII is more portable.
 	ASCII bool
+
+	// The current event while in the handlers.
+	CurrentEvent tcell.Event
 }
 
 // NewGui returns a new Gui object with a given output mode.
-func NewGui(mode OutputMode) (*Gui, error) {
-	if err := termbox.Init(); err != nil {
-		return nil, err
-	}
-
+// func NewGui(mode OutputMode) (*Gui, error) {
+func NewGui() (*Gui, error) {
 	g := &Gui{}
 
-	g.outputMode = mode
-	termbox.SetOutputMode(termbox.OutputMode(mode))
+	// outMode = OutputNormal
+	if s, e := tcell.NewScreen(); e != nil {
+		return nil, e
+	} else if e = s.Init(); e != nil {
+		return nil, e
+	} else {
+		g.screen = s
+	}
+
+	// g.outputMode = mode
+	// termbox.SetScreen(g.Screen) // ugly global
+	// termbox.SetOutputMode(termbox.OutputMode(mode))
 
-	g.tbEvents = make(chan termbox.Event, 20)
+	g.tbEvents = make(chan tcell.Event, 20)
 	g.userEvents = make(chan userEvent, 20)
 
-	g.maxX, g.maxY = termbox.Size()
+	g.maxX, g.maxY = g.screen.Size()
 
-	g.BgColor, g.FgColor = ColorDefault, ColorDefault
-	g.SelBgColor, g.SelFgColor = ColorDefault, ColorDefault
+	g.Style = tcell.StyleDefault
+	g.SelStyle = tcell.StyleDefault
 
 	return g, nil
 }
@@ -93,7 +104,7 @@ func NewGui(mode OutputMode) (*Gui, error) {
 // Close finalizes the library. It should be called after a successful
 // initialization and when gocui is not needed anymore.
 func (g *Gui) Close() {
-	termbox.Close()
+	g.screen.Fini()
 }
 
 // Size returns the terminal's size.
@@ -101,26 +112,48 @@ func (g *Gui) Size() (x, y int) {
 	return g.maxX, g.maxY
 }
 
+// temporary kludge for the pretty
+func (g *Gui) prettyColor(x, y int, style tcell.Style) tcell.Style {
+	if true {
+		w, h := g.screen.Size()
+
+		// dark blue gradient background
+		red := int32(0)
+		grn := int32(0)
+		blu := int32(50 * float64(y) / float64(h))
+		style = style.Background(tcell.NewRGBColor(red, grn, blu))
+
+		// two-axis green-blue gradient
+		red = int32(200)
+		grn = int32(255 * float64(y) / float64(h))
+		blu = int32(255 * float64(x) / float64(w))
+		style = style.Foreground(tcell.NewRGBColor(red, grn, blu))
+	}
+	return style
+}
+
 // SetRune writes a rune at the given point, relative to the top-left
 // corner of the terminal. It checks if the position is valid and applies
 // the given colors.
-func (g *Gui) SetRune(x, y int, ch rune, fgColor, bgColor Attribute) error {
+func (g *Gui) SetRune(x, y int, ch rune, style tcell.Style) error {
 	if x < 0 || y < 0 || x >= g.maxX || y >= g.maxY {
 		return errors.New("invalid point")
 	}
-	termbox.SetCell(x, y, ch, termbox.Attribute(fgColor), termbox.Attribute(bgColor))
+	// temporary kludge for the pretty
+	// st = g.prettyColor(x, y, st)
+	g.screen.SetContent(x, y, ch, nil, style)
 	return nil
 }
 
 // Rune returns the rune contained in the cell at the given position.
 // It checks if the position is valid.
-func (g *Gui) Rune(x, y int) (rune, error) {
-	if x < 0 || y < 0 || x >= g.maxX || y >= g.maxY {
-		return ' ', errors.New("invalid point")
-	}
-	c := termbox.CellBuffer()[y*g.maxX+x]
-	return c.Ch, nil
-}
+// func (g *Gui) Rune(x, y int) (rune, error) {
+// 	if x < 0 || y < 0 || x >= g.maxX || y >= g.maxY {
+// 		return ' ', errors.New("invalid point")
+// 	}
+// 	c := termbox.CellBuffer()[y*g.maxX+x]
+// 	return c.Ch, nil
+// }
 
 // SetView creates a new view with its top-left corner at (x0, y0)
 // and the bottom-right one at (x1, y1). If a view with the same name
@@ -144,9 +177,9 @@ func (g *Gui) SetView(name string, x0, y0, x1, y1 int) (*View, error) {
 		return v, nil
 	}
 
-	v := newView(name, x0, y0, x1, y1, g.outputMode)
-	v.BgColor, v.FgColor = g.BgColor, g.FgColor
-	v.SelBgColor, v.SelFgColor = g.SelBgColor, g.SelFgColor
+	v := newView(name, x0, y0, x1, y1, g)
+	v.Style = g.Style
+	v.SelStyle = g.SelStyle
 	g.views = append(g.views, v)
 	return v, ErrUnknownView
 }
@@ -243,60 +276,84 @@ func (g *Gui) CurrentView() *View {
 	return g.currentView
 }
 
-// SetKeybinding creates a new keybinding. If viewname equals to ""
-// (empty string) then the keybinding will apply to all views. key must
+// SetKeybinding creates a new eventBinding. If viewname equals to ""
+// (empty string) then the eventBinding will apply to all views. key must
 // be a rune or a Key.
-func (g *Gui) SetKeybinding(viewname string, key interface{}, mod Modifier, handler func(*Gui, *View) error) error {
-	var kb *keybinding
+// TODO: split into key/mouse bindings?
+func (g *Gui) SetKeybinding(viewname string, key tcell.Key, ch rune, mod tcell.ModMask, handler func(*Gui, *View) error) error {
+	// var kb *eventBinding
+
+	// k, ch, err := getKey(key)
+	// if err != nil {
+	// 	return err
+	// }
+	// TODO: get rid of this ugly mess
+	//switch key {
+	//case termbox.MouseLeft:
+	//	kb = newMouseBinding(viewname, tcell.Button1, mod, handler)
+	//case termbox.MouseMiddle:
+	//	kb = newMouseBinding(viewname, tcell.Button3, mod, handler)
+	//case termbox.MouseRight:
+	//	kb = newMouseBinding(viewname, tcell.Button2, mod, handler)
+	//case termbox.MouseWheelUp:
+	//	kb = newMouseBinding(viewname, tcell.WheelUp, mod, handler)
+	//case termbox.MouseWheelDown:
+	//	kb = newMouseBinding(viewname, tcell.WheelDown, mod, handler)
+	//default:
+	//	kb = newKeybinding(viewname, key, ch, mod, handler)
+	//}
+	kb := newKeybinding(viewname, key, ch, mod, handler)
+	g.eventBindings = append(g.eventBindings, kb)
+	return nil
+}
 
-	k, ch, err := getKey(key)
-	if err != nil {
-		return err
-	}
-	kb = newKeybinding(viewname, k, ch, mod, handler)
-	g.keybindings = append(g.keybindings, kb)
+func (g *Gui) SetMousebinding(viewname string, btn tcell.ButtonMask, mod tcell.ModMask, handler func(*Gui, *View) error) error {
+	kb := newMouseBinding(viewname, btn, mod, handler)
+	g.eventBindings = append(g.eventBindings, kb)
 	return nil
 }
 
-// DeleteKeybinding deletes a keybinding.
-func (g *Gui) DeleteKeybinding(viewname string, key interface{}, mod Modifier) error {
-	k, ch, err := getKey(key)
-	if err != nil {
-		return err
-	}
+// DeleteKeybinding deletes a eventBinding.
+func (g *Gui) DeleteKeybinding(viewname string, key tcell.Key, ch rune, mod tcell.ModMask) error {
+	// k, ch, err := getKey(key)
+	// if err != nil {
+	// 	return err
+	// }
 
-	for i, kb := range g.keybindings {
-		if kb.viewName == viewname && kb.ch == ch && kb.key == k && kb.mod == mod {
-			g.keybindings = append(g.keybindings[:i], g.keybindings[i+1:]...)
-			return nil
+	for i, kb := range g.eventBindings {
+		if kbe, ok := kb.ev.(*tcell.EventKey); ok {
+			if kb.viewName == viewname && kbe.Rune() == ch && kbe.Key() == key && kbe.Modifiers() == mod {
+				g.eventBindings = append(g.eventBindings[:i], g.eventBindings[i+1:]...)
+				return nil
+			}
 		}
 	}
-	return errors.New("keybinding not found")
+	return errors.New("eventBinding not found")
 }
 
-// DeleteKeybindings deletes all keybindings of view.
+// DeleteKeybindings deletes all eventBindings of view.
 func (g *Gui) DeleteKeybindings(viewname string) {
-	var s []*keybinding
-	for _, kb := range g.keybindings {
+	var s []*eventBinding
+	for _, kb := range g.eventBindings {
 		if kb.viewName != viewname {
 			s = append(s, kb)
 		}
 	}
-	g.keybindings = s
+	g.eventBindings = s
 }
 
 // getKey takes an empty interface with a key and returns the corresponding
 // typed Key or rune.
-func getKey(key interface{}) (Key, rune, error) {
-	switch t := key.(type) {
-	case Key:
-		return t, 0, nil
-	case rune:
-		return 0, t, nil
-	default:
-		return 0, 0, errors.New("unknown type")
-	}
-}
+// func getKey(key interface{}) (tcell.Key, rune, error) {
+// 	switch t := key.(type) {
+// 	case Key:
+// 		return t, 0, nil
+// 	case rune:
+// 		return 0, t, nil
+// 	default:
+// 		return 0, 0, errors.New("unknown type")
+// 	}
+// }
 
 // userEvent represents an event triggered by the user.
 type userEvent struct {
@@ -330,18 +387,18 @@ func (f ManagerFunc) Layout(g *Gui) error {
 }
 
 // SetManager sets the given GUI managers. It deletes all views and
-// keybindings.
+// eventBindings.
 func (g *Gui) SetManager(managers ...Manager) {
 	g.managers = managers
 	g.currentView = nil
 	g.views = nil
-	g.keybindings = nil
+	g.eventBindings = nil
 
-	go func() { g.tbEvents <- termbox.Event{Type: termbox.EventResize} }()
+	go func() { g.tbEvents <- tcell.NewEventResize(0, 0) }()
 }
 
 // SetManagerFunc sets the given manager function. It deletes all views and
-// keybindings.
+// eventBindings.
 func (g *Gui) SetManagerFunc(manager func(*Gui) error) {
 	g.SetManager(ManagerFunc(manager))
 }
@@ -351,18 +408,14 @@ func (g *Gui) SetManagerFunc(manager func(*Gui) error) {
 func (g *Gui) MainLoop() error {
 	go func() {
 		for {
-			g.tbEvents <- termbox.PollEvent()
+			g.tbEvents <- g.screen.PollEvent()
 		}
 	}()
 
-	inputMode := termbox.InputAlt
-	if g.InputEsc {
-		inputMode = termbox.InputEsc
-	}
 	if g.Mouse {
-		inputMode |= termbox.InputMouse
+		g.screen.EnableMouse()
 	}
-	termbox.SetInputMode(inputMode)
+	// s.EnablePaste()
 
 	if err := g.flush(); err != nil {
 		return err
@@ -370,7 +423,7 @@ func (g *Gui) MainLoop() error {
 	for {
 		select {
 		case ev := <-g.tbEvents:
-			if err := g.handleEvent(&ev); err != nil {
+			if err := g.handleEvent(ev); err != nil {
 				return err
 			}
 		case ev := <-g.userEvents:
@@ -392,7 +445,7 @@ func (g *Gui) consumeevents() error {
 	for {
 		select {
 		case ev := <-g.tbEvents:
-			if err := g.handleEvent(&ev); err != nil {
+			if err := g.handleEvent(ev); err != nil {
 				return err
 			}
 		case ev := <-g.userEvents:
@@ -407,12 +460,12 @@ func (g *Gui) consumeevents() error {
 
 // handleEvent handles an event, based on its type (key-press, error,
 // etc.)
-func (g *Gui) handleEvent(ev *termbox.Event) error {
-	switch ev.Type {
-	case termbox.EventKey, termbox.EventMouse:
-		return g.onKey(ev)
-	case termbox.EventError:
-		return ev.Err
+func (g *Gui) handleEvent(ev tcell.Event) error {
+	switch tev := ev.(type) {
+	case *tcell.EventMouse, *tcell.EventKey:
+		return g.onEvent(tev)
+	case *tcell.EventError:
+		return errors.New(tev.Error())
 	default:
 		return nil
 	}
@@ -420,9 +473,15 @@ func (g *Gui) handleEvent(ev *termbox.Event) error {
 
 // flush updates the gui, re-drawing frames and buffers.
 func (g *Gui) flush() error {
-	termbox.Clear(termbox.Attribute(g.FgColor), termbox.Attribute(g.BgColor))
+	// termbox.Clear(termbox.Attribute(g.FgColor), termbox.Attribute(g.BgColor))
+	w, h := g.screen.Size() // TODO: merge with maxX, maxY below
+	for row := 0; row < h; row++ {
+		for col := 0; col < w; col++ {
+			g.screen.SetContent(col, row, ' ', nil, g.Style)
+		}
+	}
 
-	maxX, maxY := termbox.Size()
+	maxX, maxY := g.screen.Size()
 	// if GUI's size has changed, we need to redraw all views
 	if maxX != g.maxX || maxY != g.maxY {
 		for _, v := range g.views {
@@ -438,23 +497,20 @@ func (g *Gui) flush() error {
 	}
 	for _, v := range g.views {
 		if v.Frame {
-			var fgColor, bgColor Attribute
+			// var fgColor, bgColor Attribute
+			st := g.Style
 			if g.Highlight && v == g.currentView {
-				fgColor = g.SelFgColor
-				bgColor = g.SelBgColor
-			} else {
-				fgColor = g.FgColor
-				bgColor = g.BgColor
+				st = g.SelStyle
 			}
 
-			if err := g.drawFrameEdges(v, fgColor, bgColor); err != nil {
+			if err := g.drawFrameEdges(v, st); err != nil {
 				return err
 			}
-			if err := g.drawFrameCorners(v, fgColor, bgColor); err != nil {
+			if err := g.drawFrameCorners(v, st); err != nil {
 				return err
 			}
 			if v.Title != "" {
-				if err := g.drawTitle(v, fgColor, bgColor); err != nil {
+				if err := g.drawTitle(v, st); err != nil {
 					return err
 				}
 			}
@@ -463,12 +519,12 @@ func (g *Gui) flush() error {
 			return err
 		}
 	}
-	termbox.Flush()
+	g.screen.Show()
 	return nil
 }
 
 // drawFrameEdges draws the horizontal and vertical edges of a view.
-func (g *Gui) drawFrameEdges(v *View, fgColor, bgColor Attribute) error {
+func (g *Gui) drawFrameEdges(v *View, style tcell.Style) error {
 	runeH, runeV := '─', '│'
 	if g.ASCII {
 		runeH, runeV = '-', '|'
@@ -479,12 +535,12 @@ func (g *Gui) drawFrameEdges(v *View, fgColor, bgColor Attribute) error {
 			continue
 		}
 		if v.y0 > -1 && v.y0 < g.maxY {
-			if err := g.SetRune(x, v.y0, runeH, fgColor, bgColor); err != nil {
+			if err := g.SetRune(x, v.y0, runeH, style); err != nil {
 				return err
 			}
 		}
 		if v.y1 > -1 && v.y1 < g.maxY {
-			if err := g.SetRune(x, v.y1, runeH, fgColor, bgColor); err != nil {
+			if err := g.SetRune(x, v.y1, runeH, style); err != nil {
 				return err
 			}
 		}
@@ -494,12 +550,12 @@ func (g *Gui) drawFrameEdges(v *View, fgColor, bgColor Attribute) error {
 			continue
 		}
 		if v.x0 > -1 && v.x0 < g.maxX {
-			if err := g.SetRune(v.x0, y, runeV, fgColor, bgColor); err != nil {
+			if err := g.SetRune(v.x0, y, runeV, style); err != nil {
 				return err
 			}
 		}
 		if v.x1 > -1 && v.x1 < g.maxX {
-			if err := g.SetRune(v.x1, y, runeV, fgColor, bgColor); err != nil {
+			if err := g.SetRune(v.x1, y, runeV, style); err != nil {
 				return err
 			}
 		}
@@ -508,7 +564,7 @@ func (g *Gui) drawFrameEdges(v *View, fgColor, bgColor Attribute) error {
 }
 
 // drawFrameCorners draws the corners of the view.
-func (g *Gui) drawFrameCorners(v *View, fgColor, bgColor Attribute) error {
+func (g *Gui) drawFrameCorners(v *View, style tcell.Style) error {
 	runeTL, runeTR, runeBL, runeBR := '┌', '┐', '└', '┘'
 	if g.ASCII {
 		runeTL, runeTR, runeBL, runeBR = '+', '+', '+', '+'
@@ -521,7 +577,7 @@ func (g *Gui) drawFrameCorners(v *View, fgColor, bgColor Attribute) error {
 
 	for _, c := range corners {
 		if c.x >= 0 && c.y >= 0 && c.x < g.maxX && c.y < g.maxY {
-			if err := g.SetRune(c.x, c.y, c.ch, fgColor, bgColor); err != nil {
+			if err := g.SetRune(c.x, c.y, c.ch, style); err != nil {
 				return err
 			}
 		}
@@ -530,7 +586,7 @@ func (g *Gui) drawFrameCorners(v *View, fgColor, bgColor Attribute) error {
 }
 
 // drawTitle draws the title of the view.
-func (g *Gui) drawTitle(v *View, fgColor, bgColor Attribute) error {
+func (g *Gui) drawTitle(v *View, style tcell.Style) error {
 	if v.y0 < 0 || v.y0 >= g.maxY {
 		return nil
 	}
@@ -542,7 +598,7 @@ func (g *Gui) drawTitle(v *View, fgColor, bgColor Attribute) error {
 		} else if x > v.x1-2 || x >= g.maxX {
 			break
 		}
-		if err := g.SetRune(x, v.y0, ch, fgColor, bgColor); err != nil {
+		if err := g.SetRune(x, v.y0, ch, style); err != nil {
 			return err
 		}
 	}
@@ -568,13 +624,13 @@ func (g *Gui) draw(v *View) error {
 			gMaxX, gMaxY := g.Size()
 			cx, cy := curview.x0+curview.cx+1, curview.y0+curview.cy+1
 			if cx >= 0 && cx < gMaxX && cy >= 0 && cy < gMaxY {
-				termbox.SetCursor(cx, cy)
+				g.screen.ShowCursor(cx, cy)
 			} else {
-				termbox.HideCursor()
+				g.screen.ShowCursor(-1, -1) // HideCursor
 			}
 		}
 	} else {
-		termbox.HideCursor()
+		g.screen.ShowCursor(-1, -1) // HideCursor
 	}
 
 	v.clearRunes()
@@ -584,13 +640,13 @@ func (g *Gui) draw(v *View) error {
 	return nil
 }
 
-// onKey manages key-press events. A keybinding handler is called when
-// a key-press or mouse event satisfies a configured keybinding. Furthermore,
+// onEvent manages key/mouse events. A eventBinding handler is called when
+// a key-press or mouse event satisfies a configured eventBinding. Furthermore,
 // currentView's internal buffer is modified if currentView.Editable is true.
-func (g *Gui) onKey(ev *termbox.Event) error {
-	switch ev.Type {
-	case termbox.EventKey:
-		matched, err := g.execKeybindings(g.currentView, ev)
+func (g *Gui) onEvent(ev tcell.Event) error {
+	switch tev := ev.(type) {
+	case *tcell.EventKey:
+		matched, err := g.execEventBindings(g.currentView, ev)
 		if err != nil {
 			return err
 		}
@@ -598,34 +654,58 @@ func (g *Gui) onKey(ev *termbox.Event) error {
 			break
 		}
 		if g.currentView != nil && g.currentView.Editable && g.currentView.Editor != nil {
-			g.currentView.Editor.Edit(g.currentView, Key(ev.Key), ev.Ch, Modifier(ev.Mod))
+			g.currentView.Editor.Edit(g.currentView, tev.Key(), tev.Rune(), tev.Modifiers())
 		}
-	case termbox.EventMouse:
-		mx, my := ev.MouseX, ev.MouseY
-		v, err := g.ViewByPosition(mx, my)
+	case *tcell.EventMouse:
+		v, _, _, err := g.GetViewRelativeMousePosition(tev)
 		if err != nil {
 			break
 		}
-		if err := v.SetCursor(mx-v.x0-1, my-v.y0-1); err != nil {
+		// If the key-binding wants to move the cursor, it should call SetCursorFromCurrentMouseEvent()
+		// Not all mouse events will want to do this (eg: scroll wheel)
+		g.CurrentEvent = ev
+		if _, err := g.execEventBindings(v, g.CurrentEvent); err != nil {
 			return err
 		}
-		if _, err := g.execKeybindings(v, ev); err != nil {
-			return err
+	}
+	return nil
+}
+
+// GetViewRelativeMousePosition returns the View and relative x/y for the provided mouse event.
+func (g *Gui) GetViewRelativeMousePosition(ev tcell.Event) (*View, int, int, error) {
+	if kbe, ok := ev.(*tcell.EventMouse); ok {
+		mx, my := kbe.Position()
+		v, err := g.ViewByPosition(mx, my)
+		if err != nil {
+			return nil, 0, 0, err
 		}
+		return v, mx - v.x0 - 1, my - v.y0 - 1, nil
 	}
+	return nil, 0, 0, errors.New("Cannot GetViewRelativeMousePosition on non-mouse event")
+}
 
+// SetCursorFromCurrentMouseEvent updates the cursor position based on the mouse coordinates.
+func (g *Gui) SetCursorFromCurrentMouseEvent() error {
+	v, x, y, err := g.GetViewRelativeMousePosition(g.CurrentEvent)
+	if err != nil {
+		return err
+	}
+	if err := v.SetCursor(x, y); err != nil {
+		return err
+	}
 	return nil
 }
 
-// execKeybindings executes the keybinding handlers that match the passed view
+// execEventBindings executes the handlers that match the passed view
 // and event. The value of matched is true if there is a match and no errors.
-func (g *Gui) execKeybindings(v *View, ev *termbox.Event) (matched bool, err error) {
+// TODO: rename to more generic - it's not just keys (incl mouse)
+func (g *Gui) execEventBindings(v *View, xev tcell.Event) (matched bool, err error) {
 	matched = false
-	for _, kb := range g.keybindings {
+	for _, kb := range g.eventBindings {
 		if kb.handler == nil {
 			continue
 		}
-		if kb.matchKeypress(Key(ev.Key), ev.Ch, Modifier(ev.Mod)) && kb.matchView(v) {
+		if kb.matchEvent(xev) && kb.matchView(v) {
 			if err := kb.handler(g, v); err != nil {
 				return false, err
 			}
diff --git a/vendor/github.com/miguelmota/gocui/view.go b/pkg/gocui/view.go
similarity index 90%
rename from vendor/github.com/miguelmota/gocui/view.go
rename to pkg/gocui/view.go
index a2c36bd..53cfe44 100644
--- a/vendor/github.com/miguelmota/gocui/view.go
+++ b/pkg/gocui/view.go
@@ -10,7 +10,7 @@ import (
 	"io"
 	"strings"
 
-	"github.com/miguelmota/termbox-go"
+	"github.com/gdamore/tcell/v2"
 )
 
 // A View is a window. It maintains its own internal buffer and cursor
@@ -31,18 +31,18 @@ type View struct {
 
 	// BgColor and FgColor allow to configure the background and foreground
 	// colors of the View.
-	BgColor, FgColor Attribute
+	Style tcell.Style
 
 	// SelBgColor and SelFgColor are used to configure the background and
 	// foreground colors of the selected line, when it is highlighted.
-	SelBgColor, SelFgColor Attribute
+	SelStyle tcell.Style
 
 	// If Editable is true, keystrokes will be added to the view's internal
 	// buffer at the cursor position.
 	Editable bool
 
 	// Editor allows to define the editor that manages the edition mode,
-	// including keybindings or cursor behaviour. DefaultEditor is used by
+	// including eventBindings or cursor behaviour. DefaultEditor is used by
 	// default.
 	Editor Editor
 
@@ -71,6 +71,9 @@ type View struct {
 	// If Mask is true, the View will display the mask instead of the real
 	// content
 	Mask rune
+
+	// The gui that owns this view
+	g *Gui
 }
 
 type viewLine struct {
@@ -79,8 +82,9 @@ type viewLine struct {
 }
 
 type cell struct {
-	chr              rune
-	bgColor, fgColor Attribute
+	chr rune
+	// bgColor, fgColor Attribute
+	style tcell.Style
 }
 
 type lineType []cell
@@ -95,7 +99,7 @@ func (l lineType) String() string {
 }
 
 // newView returns a new View object.
-func newView(name string, x0, y0, x1, y1 int, mode OutputMode) *View {
+func newView(name string, x0, y0, x1, y1 int, g *Gui) *View {
 	v := &View{
 		name:    name,
 		x0:      x0,
@@ -105,7 +109,8 @@ func newView(name string, x0, y0, x1, y1 int, mode OutputMode) *View {
 		Frame:   true,
 		Editor:  DefaultEditor,
 		tainted: true,
-		ei:      newEscapeInterpreter(mode),
+		ei:      newEscapeInterpreter(),
+		g:       g,
 	}
 	return v
 }
@@ -123,7 +128,7 @@ func (v *View) Name() string {
 // setRune sets a rune at the given point relative to the view. It applies the
 // specified colors, taking into account if the cell must be highlighted. Also,
 // it checks if the position is valid.
-func (v *View) setRune(x, y int, ch rune, fgColor, bgColor Attribute) error {
+func (v *View) setRune(x, y int, ch rune, style tcell.Style) error {
 	maxX, maxY := v.Size()
 	if x < 0 || x >= maxX || y < 0 || y >= maxY {
 		return errors.New("invalid point")
@@ -145,16 +150,13 @@ func (v *View) setRune(x, y int, ch rune, fgColor, bgColor Attribute) error {
 	}
 
 	if v.Mask != 0 {
-		fgColor = v.FgColor
-		bgColor = v.BgColor
+		style = v.Style
 		ch = v.Mask
 	} else if v.Highlight && ry == rcy {
-		fgColor = v.SelFgColor
-		bgColor = v.SelBgColor
+		style = v.SelStyle
 	}
 
-	termbox.SetCell(v.x0+x+1, v.y0+y+1, ch,
-		termbox.Attribute(fgColor), termbox.Attribute(bgColor))
+	v.g.SetRune(v.x0+x+1, v.y0+y+1, ch, style)
 
 	return nil
 }
@@ -240,9 +242,8 @@ func (v *View) parseInput(ch rune) []cell {
 	if err != nil {
 		for _, r := range v.ei.runes() {
 			c := cell{
-				fgColor: v.FgColor,
-				bgColor: v.BgColor,
-				chr:     r,
+				style: v.Style,
+				chr:   r,
 			}
 			cells = append(cells, c)
 		}
@@ -252,9 +253,8 @@ func (v *View) parseInput(ch rune) []cell {
 			return nil
 		}
 		c := cell{
-			fgColor: v.ei.curFgColor,
-			bgColor: v.ei.curBgColor,
-			chr:     ch,
+			style: v.ei.curStyle,
+			chr:   ch,
 		}
 		cells = append(cells, c)
 	}
@@ -341,16 +341,16 @@ func (v *View) draw() error {
 				break
 			}
 
-			fgColor := c.fgColor
-			if fgColor == ColorDefault {
-				fgColor = v.FgColor
+			st := c.style
+			fgColor, bgColor, _ := c.style.Decompose()
+			vfgColor, vbgColor, _ := v.Style.Decompose()
+			if fgColor == tcell.ColorDefault {
+				st = st.Foreground(vfgColor)
 			}
-			bgColor := c.bgColor
-			if bgColor == ColorDefault {
-				bgColor = v.BgColor
+			if bgColor == tcell.ColorDefault {
+				st = st.Background(vbgColor)
 			}
-
-			if err := v.setRune(x, y, c.chr, fgColor, bgColor); err != nil {
+			if err := v.setRune(x, y, c.chr, st); err != nil {
 				return err
 			}
 			x++
@@ -402,8 +402,7 @@ func (v *View) clearRunes() {
 	maxX, maxY := v.Size()
 	for x := 0; x < maxX; x++ {
 		for y := 0; y < maxY; y++ {
-			termbox.SetCell(v.x0+x+1, v.y0+y+1, ' ',
-				termbox.Attribute(v.FgColor), termbox.Attribute(v.BgColor))
+			v.g.SetRune(v.x0+x+1, v.y0+y+1, ' ', v.Style)
 		}
 	}
 }
diff --git a/pkg/termui/events.go b/pkg/termui/events.go
index 8f9c827..06edd5b 100644
--- a/pkg/termui/events.go
+++ b/pkg/termui/events.go
@@ -5,13 +5,12 @@
 package termui
 
 import (
-	"fmt"
+	"errors"
 	"path"
-	"strconv"
 	"sync"
 	"time"
 
-	"github.com/miguelmota/termbox-go"
+	"github.com/gdamore/tcell/v2"
 )
 
 type Event struct {
@@ -29,82 +28,86 @@ type EvtKbd struct {
 	KeyStr string
 }
 
-func evtKbd(e termbox.Event) EvtKbd {
+func evtKbd(e tcell.EventKey) EvtKbd {
 	ek := EvtKbd{}
 
-	k := string(e.Ch)
+	k := string(e.Rune())
 	pre := ""
 	mod := ""
 
-	if e.Mod == termbox.ModAlt {
+	if e.Modifiers() == tcell.ModAlt {
 		mod = "M-"
 	}
-	if e.Ch == 0 {
-		if e.Key > 0xFFFF-12 {
-			k = "<f" + strconv.Itoa(0xFFFF-int(e.Key)+1) + ">"
-		} else if e.Key > 0xFFFF-25 {
-			ks := []string{"<insert>", "<delete>", "<home>", "<end>", "<previous>", "<next>", "<up>", "<down>", "<left>", "<right>"}
-			k = ks[0xFFFF-int(e.Key)-12]
-		}
-
-		if e.Key <= 0x7F {
-			pre = "C-"
-			k = fmt.Sprintf("%v", 'a'-1+int(e.Key))
-			kmap := map[termbox.Key][2]string{
-				termbox.KeyCtrlSpace:     {"C-", "<space>"},
-				termbox.KeyBackspace:     {"", "<backspace>"},
-				termbox.KeyTab:           {"", "<tab>"},
-				termbox.KeyEnter:         {"", "<enter>"},
-				termbox.KeyEsc:           {"", "<escape>"},
-				termbox.KeyCtrlBackslash: {"C-", "\\"},
-				termbox.KeyCtrlSlash:     {"C-", "/"},
-				termbox.KeySpace:         {"", "<space>"},
-				termbox.KeyCtrl8:         {"C-", "8"},
-			}
-			if sk, ok := kmap[e.Key]; ok {
-				pre = sk[0]
-				k = sk[1]
-			}
-		}
+	if e.Rune() == 0 {
+		// Doesn't appear to be used by cointop
+
+		// TODO: FIXME
+		// if e.Key > 0xFFFF-12 {
+		// 	k = "<f" + strconv.Itoa(0xFFFF-int(e.Key)+1) + ">"
+		// } else if e.Key > 0xFFFF-25 {
+		// 	ks := []string{"<insert>", "<delete>", "<home>", "<end>", "<previous>", "<next>", "<up>", "<down>", "<left>", "<right>"}
+		// 	k = ks[0xFFFF-int(e.Key)-12]
+		// }
+
+		// TODO: FIXME
+		// if e.Key <= 0x7F {
+		// 	pre = "C-"
+		// 	k = fmt.Sprintf("%v", 'a'-1+int(e.Key))
+		// 	kmap := map[termbox.Key][2]string{
+		// 		termbox.KeyCtrlSpace:     {"C-", "<space>"}, // TODO: FIXME
+		// 		termbox.KeyBackspace:     {"", "<backspace>"},
+		// 		termbox.KeyTab:           {"", "<tab>"},
+		// 		termbox.KeyEnter:         {"", "<enter>"},
+		// 		termbox.KeyEsc:           {"", "<escape>"},
+		// 		termbox.KeyCtrlBackslash: {"C-", "\\"},
+		// 		termbox.KeyCtrlSlash:     {"C-", "/"},
+		// 		termbox.KeySpace:         {"", "<space>"},
+		// 		termbox.KeyCtrl8:         {"C-", "8"}, // TODO: FIXME
+		// 	}
+		// 	if sk, ok := kmap[e.Key]; ok {
+		// 		pre = sk[0]
+		// 		k = sk[1]
+		// 	}
+		// }
 	}
 
 	ek.KeyStr = pre + mod + k
 	return ek
 }
 
-func crtTermboxEvt(e termbox.Event) Event {
-	systypemap := map[termbox.EventType]string{
-		termbox.EventKey:       "keyboard",
-		termbox.EventResize:    "window",
-		termbox.EventMouse:     "mouse",
-		termbox.EventError:     "error",
-		termbox.EventInterrupt: "interrupt",
-	}
-	ne := Event{From: "/sys", Time: time.Now().Unix()}
-	typ := e.Type
-	ne.Type = systypemap[typ]
-
-	switch typ {
-	case termbox.EventKey:
-		kbd := evtKbd(e)
-		ne.Path = "/sys/kbd/" + kbd.KeyStr
-		ne.Data = kbd
-	case termbox.EventResize:
+func crtTermboxEvt(e tcell.Event) Event {
+	ne := Event{From: "/sys", Time: e.When().Unix()}
+	switch tev := e.(type) {
+	case *tcell.EventResize:
 		wnd := EvtWnd{}
-		wnd.Width = e.Width
-		wnd.Height = e.Height
+		wnd.Width, wnd.Height = tev.Size()
 		ne.Path = "/sys/wnd/resize"
 		ne.Data = wnd
-	case termbox.EventError:
-		err := EvtErr(e.Err)
-		ne.Path = "/sys/err"
-		ne.Data = err
-	case termbox.EventMouse:
+		ne.Type = "window"
+		// log.Debugf("XXX Resized to %d,%d", wnd.Width, wnd.Height)
+		return ne
+	case *tcell.EventMouse:
 		m := EvtMouse{}
-		m.X = e.MouseX
-		m.Y = e.MouseY
+		m.X, m.Y = tev.Position()
 		ne.Path = "/sys/mouse"
 		ne.Data = m
+		ne.Type = "mouse"
+		return ne
+	case *tcell.EventKey:
+		kbd := evtKbd(*tev)
+		ne.Path = "/sys/kbd/" + kbd.KeyStr
+		ne.Data = kbd
+		ne.Type = "keyboard"
+		return ne
+	case *tcell.EventError:
+		ne.Path = "/sys/err"
+		ne.Data = errors.New(tev.Error())
+		ne.Type = "error"
+		return ne
+	case *tcell.EventInterrupt:
+		ne.Type = "interrupt"
+	default:
+		ne.Type = "" // TODO: unhandled event?
 	}
 	return ne
 }
@@ -122,17 +125,18 @@ type EvtMouse struct {
 
 type EvtErr error
 
-func hookTermboxEvt() {
-	for {
-		e := termbox.PollEvent()
-
-		for _, c := range sysEvtChs {
-			func(ch chan Event) {
-				ch <- crtTermboxEvt(e)
-			}(c)
-		}
-	}
-}
+// func hookTermboxEvt() {
+// 	log.Debugf("XXX hookTermboxEvt")
+// 	for {
+// 		e := termbox.PollEvent()
+// 		log.Debugf("XXX event %s", e)
+// 		for _, c := range sysEvtChs {
+// 			func(ch chan Event) {
+// 				ch <- crtTermboxEvt(e)
+// 			}(c)
+// 		}
+// 	}
+// }
 
 func NewSysEvtCh() chan Event {
 	ec := make(chan Event)
diff --git a/pkg/termui/helper.go b/pkg/termui/helper.go
index e844ae2..b700f01 100644
--- a/pkg/termui/helper.go
+++ b/pkg/termui/helper.go
@@ -8,8 +8,6 @@ import (
 	"regexp"
 	"strings"
 
-	tm "github.com/miguelmota/termbox-go"
-
 	rw "github.com/mattn/go-runewidth"
 )
 
@@ -48,9 +46,9 @@ var (
 
 /* ----------------------- End ----------------------------- */
 
-func toTmAttr(x Attribute) tm.Attribute {
-	return tm.Attribute(x)
-}
+// func toTmAttr(x Attribute) tm.Attribute {
+// 	return tm.Attribute(x)
+// }
 
 func str2runes(s string) []rune {
 	return []rune(s)
diff --git a/pkg/termui/render.go b/pkg/termui/render.go
index 1d655f0..a589976 100644
--- a/pkg/termui/render.go
+++ b/pkg/termui/render.go
@@ -4,29 +4,12 @@
 
 package termui
 
-import (
-	"image"
-	"io"
-	"sync"
-	"time"
-
-	"fmt"
-
-	"os"
-
-	"runtime/debug"
-
-	"bytes"
-
-	"github.com/maruel/panicparse/stack"
-	tm "github.com/miguelmota/termbox-go"
-)
-
 // Bufferer should be implemented by all renderable components.
 type Bufferer interface {
 	Buffer() Buffer
 }
 
+/*
 // Init initializes termui library. This function should be called before any others.
 // After initialization, the library must be finalized by 'Close' function.
 func Init() error {
@@ -188,3 +171,4 @@ func Render(bs ...Bufferer) {
 	//go func() { renderJobs <- bs }()
 	renderJobs <- bs
 }
+*/
diff --git a/pkg/ui/ui.go b/pkg/ui/ui.go
index 6ea2487..0527a43 100644
--- a/pkg/ui/ui.go
+++ b/pkg/ui/ui.go
@@ -1,7 +1,8 @@
 package ui
 
 import (
-	"github.com/miguelmota/gocui"
+	"github.com/cointop-sh/cointop/pkg/gocui"
+	"github.com/gdamore/tcell/v2"
 )
 
 // UI is the UI view struct
@@ -11,7 +12,7 @@ type UI struct {
 
 // NewUI returns a new UI instance
 func NewUI() (*UI, error) {
-	g, err := gocui.NewGui(gocui.Output256)
+	g, err := gocui.NewGui()
 	if err != nil {
 		return nil, err
 	}
@@ -26,14 +27,9 @@ func (ui *UI) GetGocui() *gocui.Gui {
 	return ui.g
 }
 
-// SetFgColor sets the foreground color
-func (ui *UI) SetFgColor(fgColor gocui.Attribute) {
-	ui.g.FgColor = fgColor
-}
-
-// SetBgColor sets the background color
-func (ui *UI) SetBgColor(bgColor gocui.Attribute) {
-	ui.g.BgColor = bgColor
+// SetFgColor sets the default style
+func (ui *UI) SetStyle(style tcell.Style) {
+	ui.g.Style = style
 }
 
 // SetInputEsc enables the escape key
diff --git a/pkg/ui/view.go b/pkg/ui/view.go
index 6255aaa..8bf089b 100644
--- a/pkg/ui/view.go
+++ b/pkg/ui/view.go
@@ -3,7 +3,8 @@ package ui
 import (
 	"fmt"
 
-	"github.com/miguelmota/gocui"
+	"github.com/cointop-sh/cointop/pkg/gocui"
+	"github.com/gdamore/tcell/v2"
 )
 
 // IView is the view interface
@@ -213,31 +214,17 @@ func (view *View) SetWrap(enabled bool) error {
 	return nil
 }
 
-// SetFgColor sets the foreground color
-func (view *View) SetFgColor(color gocui.Attribute) {
+// SetStyle sets the text style for the view
+func (view *View) SetStyle(style tcell.Style) {
 	if view.HasBacking() {
-		view.backing.FgColor = color
+		view.backing.Style = style
 	}
 }
 
-// SetBgColor sets the background color
-func (view *View) SetBgColor(color gocui.Attribute) {
+// SetStyle sets the selection text style for the view
+func (view *View) SetSelStyle(style tcell.Style) {
 	if view.HasBacking() {
-		view.backing.BgColor = color
-	}
-}
-
-// SetSelFgColor sets the foreground color for selection
-func (view *View) SetSelFgColor(color gocui.Attribute) {
-	if view.HasBacking() {
-		view.backing.SelFgColor = color
-	}
-}
-
-// SetSelBgColor sets the background color for selection
-func (view *View) SetSelBgColor(color gocui.Attribute) {
-	if view.HasBacking() {
-		view.backing.SelBgColor = color
+		view.backing.SelStyle = style
 	}
 }
 
diff --git a/vendor/github.com/gdamore/encoding/.appveyor.yml b/vendor/github.com/gdamore/encoding/.appveyor.yml
new file mode 100644
index 0000000..19a4c5d
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/.appveyor.yml
@@ -0,0 +1,13 @@
+version: 1.0.{build}
+clone_folder: c:\gopath\src\github.com\gdamore\encoding
+environment:
+  GOPATH: c:\gopath
+build_script:
+- go version
+- go env
+- SET PATH=%LOCALAPPDATA%\atom\bin;%GOPATH%\bin;%PATH%
+- go get -t ./...
+- go build
+- go install ./...
+test_script:
+- go test ./...
diff --git a/vendor/github.com/gdamore/encoding/.travis.yml b/vendor/github.com/gdamore/encoding/.travis.yml
new file mode 100644
index 0000000..5042413
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/.travis.yml
@@ -0,0 +1,7 @@
+language: go
+
+go:
+  - 1.9.x
+  - 1.10.x
+  - 1.11.x
+  - tip
diff --git a/vendor/github.com/gdamore/encoding/LICENSE b/vendor/github.com/gdamore/encoding/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
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+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
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+      the terms of any separate license agreement you may have executed
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diff --git a/vendor/github.com/gdamore/encoding/README.md b/vendor/github.com/gdamore/encoding/README.md
new file mode 100644
index 0000000..3db2b4c
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/README.md
@@ -0,0 +1,19 @@
+## encoding
+
+[![Linux Status](https://img.shields.io/travis/gdamore/encoding.svg?label=linux)](https://travis-ci.org/gdamore/encoding)
+[![Windows Status](https://img.shields.io/appveyor/ci/gdamore/encoding.svg?label=windows)](https://ci.appveyor.com/project/gdamore/encoding)
+[![Apache License](https://img.shields.io/badge/license-APACHE2-blue.svg)](https://github.com/gdamore/encoding/blob/master/LICENSE)
+[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](https://godoc.org/github.com/gdamore/encoding)
+[![Go Report Card](http://goreportcard.com/badge/gdamore/encoding)](http://goreportcard.com/report/gdamore/encoding)
+
+Package encoding provides a number of encodings that are missing from the
+standard Go [encoding]("https://godoc.org/golang.org/x/text/encoding") package.
+
+We hope that we can contribute these to the standard Go library someday.  It
+turns out that some of these are useful for dealing with I/O streams coming
+from non-UTF friendly sources.
+
+The UTF8 Encoder is also useful for situations where valid UTF-8 might be
+carried in streams that contain non-valid UTF; in particular I use it for
+helping me cope with terminals that embed escape sequences in otherwise
+valid UTF-8.
diff --git a/vendor/github.com/gdamore/encoding/ascii.go b/vendor/github.com/gdamore/encoding/ascii.go
new file mode 100644
index 0000000..b7321f4
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/ascii.go
@@ -0,0 +1,36 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package encoding
+
+import (
+	"golang.org/x/text/encoding"
+)
+
+// ASCII represents the 7-bit US-ASCII scheme.  It decodes directly to
+// UTF-8 without change, as all ASCII values are legal UTF-8.
+// Unicode values less than 128 (i.e. 7 bits) map 1:1 with ASCII.
+// It encodes runes outside of that to 0x1A, the ASCII substitution character.
+var ASCII encoding.Encoding
+
+func init() {
+	amap := make(map[byte]rune)
+	for i := 128; i <= 255; i++ {
+		amap[byte(i)] = RuneError
+	}
+
+	cm := &Charmap{Map: amap}
+	cm.Init()
+	ASCII = cm
+}
diff --git a/vendor/github.com/gdamore/encoding/charmap.go b/vendor/github.com/gdamore/encoding/charmap.go
new file mode 100644
index 0000000..db1c33e
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/charmap.go
@@ -0,0 +1,196 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package encoding
+
+import (
+	"sync"
+	"unicode/utf8"
+
+	"golang.org/x/text/encoding"
+	"golang.org/x/text/transform"
+)
+
+const (
+	// RuneError is an alias for the UTF-8 replacement rune, '\uFFFD'.
+	RuneError = '\uFFFD'
+
+	// RuneSelf is the rune below which UTF-8 and the Unicode values are
+	// identical.  Its also the limit for ASCII.
+	RuneSelf = 0x80
+
+	// ASCIISub is the ASCII substitution character.
+	ASCIISub = '\x1a'
+)
+
+// Charmap is a structure for setting up encodings for 8-bit character sets,
+// for transforming between UTF8 and that other character set.  It has some
+// ideas borrowed from golang.org/x/text/encoding/charmap, but it uses a
+// different implementation.  This implementation uses maps, and supports
+// user-defined maps.
+//
+// We do assume that a character map has a reasonable substitution character,
+// and that valid encodings are stable (exactly a 1:1 map) and stateless
+// (that is there is no shift character or anything like that.)  Hence this
+// approach will not work for many East Asian character sets.
+//
+// Measurement shows little or no measurable difference in the performance of
+// the two approaches.  The difference was down to a couple of nsec/op, and
+// no consistent pattern as to which ran faster.  With the conversion to
+// UTF-8 the code takes about 25 nsec/op.  The conversion in the reverse
+// direction takes about 100 nsec/op.  (The larger cost for conversion
+// from UTF-8 is most likely due to the need to convert the UTF-8 byte stream
+// to a rune before conversion.
+//
+type Charmap struct {
+	transform.NopResetter
+	bytes map[rune]byte
+	runes [256][]byte
+	once  sync.Once
+
+	// The map between bytes and runes.  To indicate that a specific
+	// byte value is invalid for a charcter set, use the rune
+	// utf8.RuneError.  Values that are absent from this map will
+	// be assumed to have the identity mapping -- that is the default
+	// is to assume ISO8859-1, where all 8-bit characters have the same
+	// numeric value as their Unicode runes.  (Not to be confused with
+	// the UTF-8 values, which *will* be different for non-ASCII runes.)
+	//
+	// If no values less than RuneSelf are changed (or have non-identity
+	// mappings), then the character set is assumed to be an ASCII
+	// superset, and certain assumptions and optimizations become
+	// available for ASCII bytes.
+	Map map[byte]rune
+
+	// The ReplacementChar is the byte value to use for substitution.
+	// It should normally be ASCIISub for ASCII encodings.  This may be
+	// unset (left to zero) for mappings that are strictly ASCII supersets.
+	// In that case ASCIISub will be assumed instead.
+	ReplacementChar byte
+}
+
+type cmapDecoder struct {
+	transform.NopResetter
+	runes [256][]byte
+}
+
+type cmapEncoder struct {
+	transform.NopResetter
+	bytes   map[rune]byte
+	replace byte
+}
+
+// Init initializes internal values of a character map.  This should
+// be done early, to minimize the cost of allocation of transforms
+// later.  It is not strictly necessary however, as the allocation
+// functions will arrange to call it if it has not already been done.
+func (c *Charmap) Init() {
+	c.once.Do(c.initialize)
+}
+
+func (c *Charmap) initialize() {
+	c.bytes = make(map[rune]byte)
+	ascii := true
+
+	for i := 0; i < 256; i++ {
+		r, ok := c.Map[byte(i)]
+		if !ok {
+			r = rune(i)
+		}
+		if r < 128 && r != rune(i) {
+			ascii = false
+		}
+		if r != RuneError {
+			c.bytes[r] = byte(i)
+		}
+		utf := make([]byte, utf8.RuneLen(r))
+		utf8.EncodeRune(utf, r)
+		c.runes[i] = utf
+	}
+	if ascii && c.ReplacementChar == '\x00' {
+		c.ReplacementChar = ASCIISub
+	}
+}
+
+// NewDecoder returns a Decoder the converts from the 8-bit
+// character set to UTF-8.  Unknown mappings, if any, are mapped
+// to '\uFFFD'.
+func (c *Charmap) NewDecoder() *encoding.Decoder {
+	c.Init()
+	return &encoding.Decoder{Transformer: &cmapDecoder{runes: c.runes}}
+}
+
+// NewEncoder returns a Transformer that converts from UTF8 to the
+// 8-bit character set.  Unknown mappings are mapped to 0x1A.
+func (c *Charmap) NewEncoder() *encoding.Encoder {
+	c.Init()
+	return &encoding.Encoder{
+		Transformer: &cmapEncoder{
+			bytes:   c.bytes,
+			replace: c.ReplacementChar,
+		},
+	}
+}
+
+func (d *cmapDecoder) Transform(dst, src []byte, atEOF bool) (int, int, error) {
+	var e error
+	var ndst, nsrc int
+
+	for _, c := range src {
+		b := d.runes[c]
+		l := len(b)
+
+		if ndst+l > len(dst) {
+			e = transform.ErrShortDst
+			break
+		}
+		for i := 0; i < l; i++ {
+			dst[ndst] = b[i]
+			ndst++
+		}
+		nsrc++
+	}
+	return ndst, nsrc, e
+}
+
+func (d *cmapEncoder) Transform(dst, src []byte, atEOF bool) (int, int, error) {
+	var e error
+	var ndst, nsrc int
+	for nsrc < len(src) {
+		if ndst >= len(dst) {
+			e = transform.ErrShortDst
+			break
+		}
+
+		r, sz := utf8.DecodeRune(src[nsrc:])
+		if r == utf8.RuneError && sz == 1 {
+			// If its inconclusive due to insufficient data in
+			// in the source, report it
+			if !atEOF && !utf8.FullRune(src[nsrc:]) {
+				e = transform.ErrShortSrc
+				break
+			}
+		}
+
+		if c, ok := d.bytes[r]; ok {
+			dst[ndst] = c
+		} else {
+			dst[ndst] = d.replace
+		}
+		nsrc += sz
+		ndst++
+	}
+
+	return ndst, nsrc, e
+}
diff --git a/vendor/github.com/gdamore/encoding/doc.go b/vendor/github.com/gdamore/encoding/doc.go
new file mode 100644
index 0000000..8a7b48d
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/doc.go
@@ -0,0 +1,17 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package encoding provides a few of the encoding structures that are
+// missing from the Go x/text/encoding tree.
+package encoding
diff --git a/vendor/github.com/gdamore/encoding/ebcdic.go b/vendor/github.com/gdamore/encoding/ebcdic.go
new file mode 100644
index 0000000..8e13f1a
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/ebcdic.go
@@ -0,0 +1,273 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package encoding
+
+import (
+	"golang.org/x/text/encoding"
+)
+
+// EBCDIC represents the 8-bit EBCDIC scheme, found in some mainframe
+// environments.  If you don't know what this is, consider yourself lucky.
+var EBCDIC encoding.Encoding
+
+func init() {
+	cm := &Charmap{
+		ReplacementChar: '\x3f',
+		Map: map[byte]rune{
+			// 0x00-0x03 match
+			0x04: RuneError,
+			0x05: '\t',
+			0x06: RuneError,
+			0x07: '\x7f',
+			0x08: RuneError,
+			0x09: RuneError,
+			0x0a: RuneError,
+			// 0x0b-0x13 match
+			0x14: RuneError,
+			0x15: '\x85', // Not in any ISO code
+			0x16: '\x08',
+			0x17: RuneError,
+			// 0x18-0x19 match
+			0x1a: RuneError,
+			0x1b: RuneError,
+			// 0x1c-0x1f match
+			0x20: RuneError,
+			0x21: RuneError,
+			0x22: RuneError,
+			0x23: RuneError,
+			0x24: RuneError,
+			0x25: '\n',
+			0x26: '\x17',
+			0x27: '\x1b',
+			0x28: RuneError,
+			0x29: RuneError,
+			0x2a: RuneError,
+			0x2b: RuneError,
+			0x2c: RuneError,
+			0x2d: '\x05',
+			0x2e: '\x06',
+			0x2f: '\x07',
+			0x30: RuneError,
+			0x31: RuneError,
+			0x32: '\x16',
+			0x33: RuneError,
+			0x34: RuneError,
+			0x35: RuneError,
+			0x36: RuneError,
+			0x37: '\x04',
+			0x38: RuneError,
+			0x39: RuneError,
+			0x3a: RuneError,
+			0x3b: RuneError,
+			0x3c: '\x14',
+			0x3d: '\x15',
+			0x3e: RuneError,
+			0x3f: '\x1a', // also replacement char
+			0x40: ' ',
+			0x41: '\xa0',
+			0x42: RuneError,
+			0x43: RuneError,
+			0x44: RuneError,
+			0x45: RuneError,
+			0x46: RuneError,
+			0x47: RuneError,
+			0x48: RuneError,
+			0x49: RuneError,
+			0x4a: RuneError,
+			0x4b: '.',
+			0x4c: '<',
+			0x4d: '(',
+			0x4e: '+',
+			0x4f: '|',
+			0x50: '&',
+			0x51: RuneError,
+			0x52: RuneError,
+			0x53: RuneError,
+			0x54: RuneError,
+			0x55: RuneError,
+			0x56: RuneError,
+			0x57: RuneError,
+			0x58: RuneError,
+			0x59: RuneError,
+			0x5a: '!',
+			0x5b: '$',
+			0x5c: '*',
+			0x5d: ')',
+			0x5e: ';',
+			0x5f: '¬',
+			0x60: '-',
+			0x61: '/',
+			0x62: RuneError,
+			0x63: RuneError,
+			0x64: RuneError,
+			0x65: RuneError,
+			0x66: RuneError,
+			0x67: RuneError,
+			0x68: RuneError,
+			0x69: RuneError,
+			0x6a: '¦',
+			0x6b: ',',
+			0x6c: '%',
+			0x6d: '_',
+			0x6e: '>',
+			0x6f: '?',
+			0x70: RuneError,
+			0x71: RuneError,
+			0x72: RuneError,
+			0x73: RuneError,
+			0x74: RuneError,
+			0x75: RuneError,
+			0x76: RuneError,
+			0x77: RuneError,
+			0x78: RuneError,
+			0x79: '`',
+			0x7a: ':',
+			0x7b: '#',
+			0x7c: '@',
+			0x7d: '\'',
+			0x7e: '=',
+			0x7f: '"',
+			0x80: RuneError,
+			0x81: 'a',
+			0x82: 'b',
+			0x83: 'c',
+			0x84: 'd',
+			0x85: 'e',
+			0x86: 'f',
+			0x87: 'g',
+			0x88: 'h',
+			0x89: 'i',
+			0x8a: RuneError,
+			0x8b: RuneError,
+			0x8c: RuneError,
+			0x8d: RuneError,
+			0x8e: RuneError,
+			0x8f: '±',
+			0x90: RuneError,
+			0x91: 'j',
+			0x92: 'k',
+			0x93: 'l',
+			0x94: 'm',
+			0x95: 'n',
+			0x96: 'o',
+			0x97: 'p',
+			0x98: 'q',
+			0x99: 'r',
+			0x9a: RuneError,
+			0x9b: RuneError,
+			0x9c: RuneError,
+			0x9d: RuneError,
+			0x9e: RuneError,
+			0x9f: RuneError,
+			0xa0: RuneError,
+			0xa1: '~',
+			0xa2: 's',
+			0xa3: 't',
+			0xa4: 'u',
+			0xa5: 'v',
+			0xa6: 'w',
+			0xa7: 'x',
+			0xa8: 'y',
+			0xa9: 'z',
+			0xaa: RuneError,
+			0xab: RuneError,
+			0xac: RuneError,
+			0xad: RuneError,
+			0xae: RuneError,
+			0xaf: RuneError,
+			0xb0: '^',
+			0xb1: RuneError,
+			0xb2: RuneError,
+			0xb3: RuneError,
+			0xb4: RuneError,
+			0xb5: RuneError,
+			0xb6: RuneError,
+			0xb7: RuneError,
+			0xb8: RuneError,
+			0xb9: RuneError,
+			0xba: '[',
+			0xbb: ']',
+			0xbc: RuneError,
+			0xbd: RuneError,
+			0xbe: RuneError,
+			0xbf: RuneError,
+			0xc0: '{',
+			0xc1: 'A',
+			0xc2: 'B',
+			0xc3: 'C',
+			0xc4: 'D',
+			0xc5: 'E',
+			0xc6: 'F',
+			0xc7: 'G',
+			0xc8: 'H',
+			0xc9: 'I',
+			0xca: '\xad', // NB: soft hyphen
+			0xcb: RuneError,
+			0xcc: RuneError,
+			0xcd: RuneError,
+			0xce: RuneError,
+			0xcf: RuneError,
+			0xd0: '}',
+			0xd1: 'J',
+			0xd2: 'K',
+			0xd3: 'L',
+			0xd4: 'M',
+			0xd5: 'N',
+			0xd6: 'O',
+			0xd7: 'P',
+			0xd8: 'Q',
+			0xd9: 'R',
+			0xda: RuneError,
+			0xdb: RuneError,
+			0xdc: RuneError,
+			0xdd: RuneError,
+			0xde: RuneError,
+			0xdf: RuneError,
+			0xe0: '\\',
+			0xe1: '\u2007', // Non-breaking space
+			0xe2: 'S',
+			0xe3: 'T',
+			0xe4: 'U',
+			0xe5: 'V',
+			0xe6: 'W',
+			0xe7: 'X',
+			0xe8: 'Y',
+			0xe9: 'Z',
+			0xea: RuneError,
+			0xeb: RuneError,
+			0xec: RuneError,
+			0xed: RuneError,
+			0xee: RuneError,
+			0xef: RuneError,
+			0xf0: '0',
+			0xf1: '1',
+			0xf2: '2',
+			0xf3: '3',
+			0xf4: '4',
+			0xf5: '5',
+			0xf6: '6',
+			0xf7: '7',
+			0xf8: '8',
+			0xf9: '9',
+			0xfa: RuneError,
+			0xfb: RuneError,
+			0xfc: RuneError,
+			0xfd: RuneError,
+			0xfe: RuneError,
+			0xff: RuneError,
+		}}
+	cm.Init()
+	EBCDIC = cm
+}
diff --git a/vendor/github.com/gdamore/encoding/latin1.go b/vendor/github.com/gdamore/encoding/latin1.go
new file mode 100644
index 0000000..226bf01
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/latin1.go
@@ -0,0 +1,33 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package encoding
+
+import (
+	"golang.org/x/text/encoding"
+)
+
+// ISO8859_1 represents the 8-bit ISO8859-1 scheme.  It decodes directly to
+// UTF-8 without change, as all ISO8859-1 values are legal UTF-8.
+// Unicode values less than 256 (i.e. 8 bits) map 1:1 with 8859-1.
+// It encodes runes outside of that to 0x1A, the ASCII substitution character.
+var ISO8859_1 encoding.Encoding
+
+func init() {
+	cm := &Charmap{}
+	cm.Init()
+
+	// 8859-1 is the 8-bit identity map for Unicode.
+	ISO8859_1 = cm
+}
diff --git a/vendor/github.com/gdamore/encoding/latin5.go b/vendor/github.com/gdamore/encoding/latin5.go
new file mode 100644
index 0000000..c75ecf2
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/latin5.go
@@ -0,0 +1,35 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package encoding
+
+import (
+	"golang.org/x/text/encoding"
+)
+
+// ISO8859_9 represents the 8-bit ISO8859-9 scheme.
+var ISO8859_9 encoding.Encoding
+
+func init() {
+	cm := &Charmap{Map: map[byte]rune{
+		0xD0: 'Ğ',
+		0xDD: 'İ',
+		0xDE: 'Ş',
+		0xF0: 'ğ',
+		0xFD: 'ı',
+		0xFE: 'ş',
+	}}
+	cm.Init()
+	ISO8859_9 = cm
+}
diff --git a/vendor/github.com/gdamore/encoding/utf8.go b/vendor/github.com/gdamore/encoding/utf8.go
new file mode 100644
index 0000000..2d59f4b
--- /dev/null
+++ b/vendor/github.com/gdamore/encoding/utf8.go
@@ -0,0 +1,35 @@
+// Copyright 2015 Garrett D'Amore
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package encoding
+
+import (
+	"golang.org/x/text/encoding"
+)
+
+type validUtf8 struct{}
+
+// UTF8 is an encoding for UTF-8.  All it does is verify that the UTF-8
+// in is valid.  The main reason for its existence is that it will detect
+// and report ErrSrcShort or ErrDstShort, whereas the Nop encoding just
+// passes every byte, blithely.
+var UTF8 encoding.Encoding = validUtf8{}
+
+func (validUtf8) NewDecoder() *encoding.Decoder {
+	return &encoding.Decoder{Transformer: encoding.UTF8Validator}
+}
+
+func (validUtf8) NewEncoder() *encoding.Encoder {
+	return &encoding.Encoder{Transformer: encoding.UTF8Validator}
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/.appveyor.yml b/vendor/github.com/gdamore/tcell/v2/.appveyor.yml
new file mode 100644
index 0000000..435dfe3
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/.appveyor.yml
@@ -0,0 +1,13 @@
+version: 1.0.{build}
+clone_folder: c:\gopath\src\github.com\gdamore\tcell
+environment:
+  GOPATH: c:\gopath
+build_script:
+- go version
+- go env
+- SET PATH=%LOCALAPPDATA%\atom\bin;%GOPATH%\bin;%PATH%
+- go get -t ./...
+- go build
+- go install ./...
+test_script:
+- go test ./...
diff --git a/vendor/github.com/gdamore/tcell/v2/.gitignore b/vendor/github.com/gdamore/tcell/v2/.gitignore
new file mode 100644
index 0000000..c57100a
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/.gitignore
@@ -0,0 +1 @@
+coverage.txt
diff --git a/vendor/github.com/gdamore/tcell/v2/.travis.yml b/vendor/github.com/gdamore/tcell/v2/.travis.yml
new file mode 100644
index 0000000..967b5b3
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/.travis.yml
@@ -0,0 +1,18 @@
+language: go
+
+go:
+  - 1.15.x
+  - master
+
+arch:
+   - amd64
+   - ppc64le
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - go test -race -coverprofile=coverage.txt -covermode=atomic
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/gdamore/tcell/v2/AUTHORS b/vendor/github.com/gdamore/tcell/v2/AUTHORS
new file mode 100644
index 0000000..53f87ee
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/AUTHORS
@@ -0,0 +1,4 @@
+Garrett D'Amore <garrett@damore.org>
+Zachary Yedidia <zyedidia@gmail.com>
+Junegunn Choi <junegunn.c@gmail.com>
+Staysail Systems, Inc. <info@staysail.tech>
diff --git a/vendor/github.com/gdamore/tcell/v2/CHANGESv2.md b/vendor/github.com/gdamore/tcell/v2/CHANGESv2.md
new file mode 100644
index 0000000..ad97c11
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/CHANGESv2.md
@@ -0,0 +1,82 @@
+## Breaking Changes in _Tcell_ v2
+
+A number of changes were made to _Tcell_ for version two, and some of these are breaking.
+
+### Import Path
+
+The import path for tcell has changed to `github.com/gdamore/tcell/v2` to reflect a new major version.
+
+### Style Is Not Numeric
+
+The type `Style` has changed to a structure, to allow us to add additional data such as flags for color setting,
+more attribute bits, and so forth.
+Applications that relied on this being a number will need to be updated to use the accessor methods.
+
+### Mouse Event Changes
+
+The middle mouse button was reported as button 2 on Linux, but as button 3 on Windows,
+and the right mouse button was reported the reverse way.
+_Tcell_ now always reports the right mouse button as button 2, and the middle button as button 3.
+To help make this clearer, new symbols `ButtonPrimary`, `ButtonSecondary`, and
+`ButtonMiddle` are provided.
+(Note that which button is right vs. left may be impacted by user preferences.
+Usually the left button will be considered the Primary, and the right will be the Secondary.)
+Applications may need to adjust their handling of mouse buttons 2 and 3 accordingly.
+
+### Terminals Removed
+
+A number of terminals have been removed.
+These are mostly ancient definitions unlikely to be used by anyone, such as `adm3a`.
+
+### High Number Function Keys
+
+Historically terminfo reported function keys with modifiers set as a different
+function key altogether.  For example, Shift-F1 was reported as F13 on XTerm.
+_Tcell_ now prefers to report these using the base key (such as F1) with modifiers added.
+This works on XTerm and VTE based emulators, but some emulators may not support this.
+The new behavior more closely aligns with behavior on Windows platforms.
+
+## New Features in _Tcell_ v2
+
+These features are not breaking, but are introduced in version 2.
+
+### Improved Modifier Support
+
+For terminals that appear to behave like the venerable XTerm, _tcell_
+automatically adds modifier reporting for ALT, CTRL, SHIFT, and META keys
+when the terminal reports them.
+
+### Better Support for Palettes (Themes)
+
+When using a color by its name or palette entry, _Tcell_ now tries to
+use that palette entry as is; this should avoid some inconsistency and respect
+terminal themes correctly.
+
+When true fidelity to RGB values is needed, the new `TrueColor()` API can be used
+to create a direct color, which bypasses the palette altogether.
+
+### Automatic TrueColor Detection
+
+For some terminals, if the `Tc` or `RGB` properties are present in terminfo,
+_Tcell_ will automatically assume the terminal supports 24-bit color.
+
+### ColorReset
+
+A new color value, `ColorReset` can be used on the foreground or background
+to reset the color the default used by the terminal.
+
+### tmux Support
+
+_Tcell_ now has improved support for tmux, when the `$TERM` variable is set to "tmux".
+
+### Strikethrough Support
+
+_Tcell_ has support for strikethrough when the terminal supports it, using the new `StrikeThrough()` API.
+
+### Bracketed Paste Support
+
+_Tcell_ provides the long requested capability to discriminate paste event by using the
+bracketed-paste capability present in some terminals.  This is automatically available on
+terminals that support XTerm style mouse handling, but applications must opt-in to this
+by using the new `EnablePaste()` function.  A new `EventPaste` type of event will be
+delivered when starting and finishing a paste operation.
\ No newline at end of file
diff --git a/vendor/github.com/gdamore/tcell/v2/LICENSE b/vendor/github.com/gdamore/tcell/v2/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
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+      "Licensor" shall mean the copyright owner or entity authorized by
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+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      including but not limited to software source code, documentation
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+      "Work" shall mean the work of authorship, whether in Source or
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+      "Derivative Works" shall mean any work, whether in Source or Object
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
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+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/gdamore/tcell/v2/README.md b/vendor/github.com/gdamore/tcell/v2/README.md
new file mode 100644
index 0000000..b7727e0
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/README.md
@@ -0,0 +1,272 @@
+
+# ![Tcell](logos/tcell.png)
+
+_Tcell_ is a _Go_ package that provides a cell based view for text terminals, like _XTerm_.
+It was inspired by _termbox_, but includes many additional improvements.
+
+[![Linux Status](https://img.shields.io/travis/gdamore/tcell.svg?label=linux)](https://travis-ci.org/gdamore/tcell)
+[![Windows Status](https://img.shields.io/appveyor/ci/gdamore/tcell.svg?label=windows)](https://ci.appveyor.com/project/gdamore/tcell)
+[![Apache License](https://img.shields.io/badge/license-APACHE2-blue.svg)](https://github.com/gdamore/tcell/blob/master/LICENSE)
+[![Documentation](https://img.shields.io/badge/godoc-reference-blue.svg)](https://pkg.go.dev/github.com/gdamore/tcell/v2)
+[![Report Card](https://goreportcard.com/badge/gdamore/tcell)](http://goreportcard.com/report/gdamore/tcell/v2)
+[![Discord](https://img.shields.io/discord/639503822733180969?label=discord)](https://discord.gg/urTTxDN)
+[![Coverage](https://codecov.io/gh/gdamore/tcell/branch/master/graph/badge.svg)](https://codecov.io/gh/gdamore/tcell)
+
+
+NOTE: This is version 2 of _Tcell_.  There are breaking changes relative to version 1.
+Version 1.x remains available using the import `github.com/gdamore/tcell`.
+
+## Tutorial
+
+A brief, and still somewhat rough, [tutorial](TUTORIAL.md) is available.
+## Examples
+
+* [proxima5](https://github.com/gdamore/proxima5) - space shooter ([video](https://youtu.be/jNxKTCmY_bQ))
+* [govisor](https://github.com/gdamore/govisor) - service management UI ([screenshot](http://2.bp.blogspot.com/--OsvnfzSNow/Vf7aqMw3zXI/AAAAAAAAARo/uOMtOvw4Sbg/s1600/Screen%2BShot%2B2015-09-20%2Bat%2B9.08.41%2BAM.png))
+* mouse demo - included mouse test ([screenshot](http://2.bp.blogspot.com/-fWvW5opT0es/VhIdItdKqJI/AAAAAAAAATE/7Ojc0L1SpB0/s1600/Screen%2BShot%2B2015-10-04%2Bat%2B11.47.13%2BPM.png))
+* [gomatrix](https://github.com/gdamore/gomatrix) - converted from Termbox
+* [micro](https://github.com/zyedidia/micro/) - lightweight text editor with syntax-highlighting and themes
+* [godu](https://github.com/viktomas/godu) - utility to discover large files/folders
+* [tview](https://github.com/rivo/tview/) - rich interactive widgets
+* [cview](https://code.rocketnine.space/tslocum/cview) - user interface toolkit (fork of _tview_)
+* [awsome gocui](https://github.com/awesome-gocui/gocui) - Go Console User Interface
+* [gomandelbrot](https://github.com/rgm3/gomandelbrot) - Mandelbrot!
+* [WTF](https://github.com/senorprogrammer/wtf) - personal information dashboard
+* [browsh](https://github.com/browsh-org/browsh) - modern web browser ([video](https://www.youtube.com/watch?v=HZq86XfBoRo))
+* [go-life](https://github.com/sachaos/go-life) - Conway's Game of Life
+* [gowid](https://github.com/gcla/gowid) - compositional widgets for terminal UIs, inspired by _urwid_
+* [termshark](https://termshark.io) - interface for _tshark_, inspired by Wireshark, built on _gowid_
+* [go-tetris](https://github.com/MichaelS11/go-tetris) - Go Tetris with AI option
+* [fzf](https://github.com/junegunn/fzf) - command-line fuzzy finder
+* [ascii-fluid](https://github.com/esimov/ascii-fluid) - fluid simulation controlled by webcam
+* [cbind](https://code.rocketnine.space/tslocum/cbind) - key event encoding, decoding and handling
+* [tpong](https://github.com/spinzed/tpong) - old-school Pong
+* [aerc](https://git.sr.ht/~sircmpwn/aerc) - email client
+* [tblogs](https://github.com/ezeoleaf/tblogs) - development blogs reader
+* [spinc](https://github.com/lallassu/spinc) - _irssi_ inspired chat application for Cisco Spark/WebEx
+* [gorss](https://github.com/lallassu/gorss) - RSS/Atom feed reader
+* [memoryalike](https://github.com/Bios-Marcel/memoryalike) - memorization game
+* [lf](https://github.com/gokcehan/lf) - file manager
+* [gokeybr](https://github.com/bunyk/gokeybr) - deliberately practice your typing
+* [gonano](https://github.com/jbaramidze/gonano) - editor, mimics _nano_
+* [uchess](https://github.com/tmountain/uchess) - UCI chess client
+* [min](https://github.com/a-h/min) - Gemini browser
+* [ov](https://github.com/noborus/ov) - file pager
+* [tmux-wormhole](https://github.com/gcla/tmux-wormhole) - _tmux_ plugin to transfer files
+* [gruid-tcell](https://github.com/anaseto/gruid-tcell) - driver for the grid based UI and game framework
+* [aretext](https://github.com/aretext/aretext) - minimalist text editor with _vim_ key bindings
+
+## Pure Go Terminfo Database
+
+_Tcell_ includes a full parser and expander for terminfo capability strings,
+so that it can avoid hard coding escape strings for formatting.  It also favors
+portability, and includes support for all POSIX systems.
+
+The database is also flexible & extensible, and can be modified by either running
+a program to build the entire database, or an entry for just a single terminal.
+
+## More Portable
+
+_Tcell_ is portable to a wide variety of systems, and is pure Go, without
+any need for CGO.
+_Tcell_ is believed to work with mainstream systems officially supported by golang.
+
+## No Async IO
+
+_Tcell_ is able to operate without requiring `SIGIO` signals (unlike _termbox_),
+or asynchronous I/O, and can instead use standard Go file objects and Go routines.
+This means it should be safe, especially for
+use with programs that use exec, or otherwise need to manipulate the tty streams.
+This model is also much closer to idiomatic Go, leading to fewer surprises.
+
+## Rich Unicode & non-Unicode support
+
+_Tcell_ includes enhanced support for Unicode, including wide characters and
+combining characters, provided your terminal can support them.
+Note that
+Windows terminals generally don't support the full Unicode repertoire.
+
+It will also convert to and from Unicode locales, so that the program
+can work with UTF-8 internally, and get reasonable output in other locales.
+_Tcell_ tries hard to convert to native characters on both input and output.
+On output _Tcell_ even makes use of the alternate character set to facilitate
+drawing certain characters.
+
+## More Function Keys
+
+_Tcell_ also has richer support for a larger number of special keys that some
+terminals can send.
+
+## Better Color Handling
+
+_Tcell_ will respect your terminal's color space as specified within your terminfo entries.
+For example attempts to emit color sequences on VT100 terminals
+won't result in unintended consequences.
+
+In legacy Windows mode, _Tcell_ supports 16 colors, bold, dim, and reverse,
+instead of just termbox's 8 colors with reverse.  (Note that there is some
+conflation with bold/dim and colors.)
+Modern Windows 10 can benefit from much richer colors however.
+
+_Tcell_ maps 16 colors down to 8, for terminals that need it.
+(The upper 8 colors are just brighter versions of the lower 8.)
+
+## Better Mouse Support
+
+_Tcell_ supports enhanced mouse tracking mode, so your application can receive
+regular mouse motion events, and wheel events, if your terminal supports it.
+
+(Note: The Windows 10 Terminal application suffers from a flaw in this regard,
+and does not support mouse interaction.  The stock Windows 10 console host
+fired up with cmd.exe or PowerShell works fine however.)
+
+## _Termbox_ Compatibility
+
+A compatibility layer for _termbox_ is provided in the `compat` directory.
+To use it, try importing `github.com/gdamore/tcell/termbox` instead.
+Most _termbox-go_ programs will probably work without further modification.
+
+## Working With Unicode
+
+Internally _Tcell_ uses UTF-8, just like Go.
+However, _Tcell_ understands how to
+convert to and from other character sets, using the capabilities of
+the `golang.org/x/text/encoding packages`.
+Your application must supply
+them, as the full set of the most common ones bloats the program by about 2 MB.
+If you're lazy, and want them all anyway, see the `encoding` sub-directory.
+
+## Wide & Combining Characters
+
+The `SetContent()` API takes a primary rune, and an optional list of combining runes.
+If any of the runes is a wide (East Asian) rune occupying two cells,
+then the library will skip output from the following cell. Care must be
+taken in the application to avoid explicitly attempting to set content in the
+next cell, otherwise the results are undefined.  (Normally the wide character
+is displayed, and the other character is not; do not depend on that behavior.)
+
+Older terminal applications (especially on systems like Windows 8) lack support
+for advanced Unicode, and thus may not fare well.
+
+## Colors
+
+_Tcell_ assumes the ANSI/XTerm color model, including the 256 color map that
+XTerm uses when it supports 256 colors.  The terminfo guidance will be
+honored, with respect to the number of colors supported.  Also, only
+terminals which expose ANSI style `setaf` and `setab` will support color;
+if you have a color terminal that only has `setf` and `setb`, please submit
+a ticket.
+
+## 24-bit Color
+
+_Tcell_ _supports 24-bit color!_  (That is, if your terminal can support it.)
+
+NOTE: Technically the approach of using 24-bit RGB values for color is more
+accurately described as "direct color", but most people use the term "true color".
+We follow the (inaccurate) common convention.
+
+There are a few ways you can enable (or disable) true color.
+
+* For many terminals, we can detect it automatically if your terminal
+includes the `RGB` or `Tc` capabilities (or rather it did when the database
+was updated.)
+
+* You can force this one by setting the `COLORTERM` environment variable to
+`24-bit`, `truecolor` or `24bit`.  This is the same method used
+by most other terminal applications that support 24-bit color.
+
+* If you set your `TERM` environment variable to a value with the suffix `-truecolor`
+then 24-bit color compatible with XTerm and ECMA-48 will be assumed.
+(This feature is deprecated.
+It is recommended to use one of other methods listed above.)
+
+* You can disable 24-bit color by setting `TCELL_TRUECOLOR=disable` in your
+environment.
+
+When using TrueColor, programs will display the colors that the programmer
+intended, overriding any "`themes`" you may have set in your terminal
+emulator.  (For some cases, accurate color fidelity is more important
+than respecting themes.  For other cases, such as typical text apps that
+only use a few colors, its more desirable to respect the themes that
+the user has established.)
+
+## Performance
+
+Reasonable attempts have been made to minimize sending data to terminals,
+avoiding repeated sequences or drawing the same cell on refresh updates.
+
+## Terminfo
+
+(Not relevant for Windows users.)
+
+The Terminfo implementation operates with a built-in database.
+This should satisfy most users.  However, it can also (on systems
+with ncurses installed), dynamically parse the output from `infocmp`
+for terminals it does not already know about.
+
+See the `terminfo/` directory for more information about generating
+new entries for the built-in database.
+
+_Tcell_ requires that the terminal support the `cup` mode of cursor addressing.
+Ancient terminals without the ability to position the cursor directly
+are not supported.
+This is unlikely to be a problem; such terminals have not been mass-produced
+since the early 1970s.
+
+## Mouse Support
+
+Mouse support is detected via the `kmous` terminfo variable, however,
+enablement/disablement and decoding mouse events is done using hard coded
+sequences based on the XTerm X11 model.  All popular
+terminals with mouse tracking support this model.  (Full terminfo support
+is not possible as terminfo sequences are not defined.)
+
+On Windows, the mouse works normally.
+
+Mouse wheel buttons on various terminals are known to work, but the support
+in terminal emulators, as well as support for various buttons and
+live mouse tracking, varies widely.
+Modern _xterm_, macOS _Terminal_, and _iTerm_ all work well.
+
+## Bracketed Paste
+
+Terminals that appear to support the XTerm mouse model also can support
+bracketed paste, for applications that opt-in.  See `EnablePaste()` for details.
+
+## Testability
+
+There is a `SimulationScreen`, that can be used to simulate a real screen
+for automated testing.  The supplied tests do this.  The simulation contains
+event delivery, screen resizing support, and capabilities to inject events
+and examine "`physical`" screen contents.
+
+## Platforms
+
+### POSIX (Linux, FreeBSD, macOS, Solaris, etc.)
+
+Everything works using pure Go on mainstream platforms.  Some more esoteric
+platforms (e.g., AIX) may need to be added.  Pull requests are welcome!
+
+### Windows
+
+Windows console mode applications are supported.
+
+Modern console applications like ConEmu and the Windows 10 terminal,
+support all the good features (resize, mouse tracking, etc.)
+
+### Plan9, WASM, and others
+
+These platforms won't work, but compilation stubs are supplied
+for folks that want to include parts of this in software for those
+platforms.  The Simulation screen works, but as _Tcell_ doesn't know how to
+allocate a real screen object on those platforms, `NewScreen()` will fail.
+
+If anyone has wisdom about how to improve support for these,
+please let me know.  PRs are especially welcome.
+
+### Commercial Support
+
+_Tcell_ is absolutely free, but if you want to obtain commercial, professional support, there are options.
+
+* [TideLift](https://tidelift.com/) subscriptions include support for _Tcell_, as well as many other open source packages.
+* [Staysail Systems Inc.](mailto:info@staysail.tech) offers direct support, and custom development around _Tcell_ on an hourly basis.
diff --git a/vendor/github.com/gdamore/tcell/v2/TUTORIAL.md b/vendor/github.com/gdamore/tcell/v2/TUTORIAL.md
new file mode 100644
index 0000000..8d14f33
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/TUTORIAL.md
@@ -0,0 +1,293 @@
+# _Tcell_ Tutorial
+
+_Tcell_ provides a low-level, portable API for building terminal-based programs.
+A [terminal emulator](https://en.wikipedia.org/wiki/Terminal_emulator)
+(or a real terminal such as a DEC VT-220) is used to interact with such a program.
+
+_Tcell_'s interface is fairly low-level.
+While it provides a reasonably portable way of dealing with all the usual terminal
+features, it may be easier to utilize a higher level framework.
+A number of such frameworks are listed on the _Tcell_ main [README](README.md).
+
+This tutorial provides the details of _Tcell_, and is appropriate for developers
+wishing to create their own application frameworks or needing more direct access
+to the terminal capabilities.
+
+## Resize events
+
+Applications receive an event of type `EventResize` when they are first initialized and each time the terminal is resized.
+The new size is available as `Size`.
+
+```golang
+switch ev := ev.(type) {
+case *tcell.EventResize:
+	w, h := ev.Size()
+	logMessage(fmt.Sprintf("Resized to %dx%d", w, h))
+}
+```
+
+## Key events
+
+When a key is pressed, applications receive an event of type `EventKey`.
+This event describes the modifier keys pressed (if any) and the pressed key or rune.
+
+When a rune key is pressed, an event with its `Key` set to `KeyRune` is dispatched.
+
+When a non-rune key is pressed, it is available as the `Key` of the event.
+
+```golang
+switch ev := ev.(type) {
+case *tcell.EventKey:
+    mod, key, ch := ev.Mod(), ev.Key(), ev.Rune()
+    logMessage(fmt.Sprintf("EventKey Modifiers: %d Key: %d Rune: %d", mod, key, ch))
+}
+```
+
+### Key event restrictions
+
+Terminal-based programs have less visibility into keyboard activity than graphical applications.
+
+When a key is pressed and held, additional key press events are sent by the terminal emulator.
+The rate of these repeated events depends on the emulator's configuration.
+Key release events are not available.
+
+It is not possible to distinguish runes typed while holding shift and runes typed using caps lock.
+Capital letters are reported without the Shift modifier.
+
+## Mouse events
+
+Applications receive an event of type `EventMouse` when the mouse moves, or a mouse button is pressed or released.
+Mouse events are only delivered if
+`EnableMouse` has been called.
+
+The mouse buttons being pressed (if any) are available as `Buttons`, and the position of the mouse is available as `Position`.
+
+```golang
+switch ev := ev.(type) {
+case *tcell.EventMouse:
+	mod := ev.Modifiers()
+	btns := ev.Buttons()
+	x, y := ev.Position()
+	logMessage(fmt.Sprintf("EventMouse Modifiers: %d Buttons: %d Position: %d,%d", mod, btns, x, y))
+}
+```
+
+### Mouse buttons
+
+Identifier | Alias           | Description
+-----------|-----------------|-----------
+Button1    | ButtonPrimary   | Left button
+Button2    | ButtonSecondary | Right button
+Button3    | ButtonMiddle    | Middle button
+Button4    |                 | Side button (thumb/next)
+Button5    |                 | Side button (thumb/prev)
+
+## Usage
+
+To create a tcell application, first initialize a screen to hold it.
+
+```golang
+s, err := tcell.NewScreen()
+if err != nil {
+	log.Fatalf("%+v", err)
+}
+if err := s.Init(); err != nil {
+	log.Fatalf("%+v", err)
+}
+
+// Set default text style
+defStyle := tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset)
+s.SetStyle(defStyle)
+
+// Clear screen
+s.Clear()
+```
+
+Text may be drawn on the screen using `SetContent`.
+
+```golang
+s.SetContent(0, 0, 'H', nil, defStyle)
+s.SetContent(1, 0, 'i', nil, defStyle)
+s.SetContent(2, 0, '!', nil, defStyle)
+```
+
+To draw text more easily, define a render function.
+
+```golang
+func drawText(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) {
+	row := y1
+	col := x1
+	for _, r := range []rune(text) {
+		s.SetContent(col, row, r, nil, style)
+		col++
+		if col >= x2 {
+			row++
+			col = x1
+		}
+		if row > y2 {
+			break
+		}
+	}
+}
+```
+
+Lastly, define an event loop to handle user input and update application state.
+
+```golang
+quit := func() {
+    s.Fini()
+    os.Exit(0)
+}
+for {
+    // Update screen
+    s.Show()
+
+    // Poll event
+    ev := s.PollEvent()
+
+    // Process event
+    switch ev := ev.(type) {
+    case *tcell.EventResize:
+        s.Sync()
+    case *tcell.EventKey:
+        if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC {
+            quit()
+        }
+    }
+}
+```
+
+## Demo application
+
+The following demonstrates how to initialize a screen, draw text/graphics and handle user input.
+
+```golang
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/gdamore/tcell/v2"
+)
+
+func drawText(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) {
+	row := y1
+	col := x1
+	for _, r := range []rune(text) {
+		s.SetContent(col, row, r, nil, style)
+		col++
+		if col >= x2 {
+			row++
+			col = x1
+		}
+		if row > y2 {
+			break
+		}
+	}
+}
+
+func drawBox(s tcell.Screen, x1, y1, x2, y2 int, style tcell.Style, text string) {
+	if y2 < y1 {
+		y1, y2 = y2, y1
+	}
+	if x2 < x1 {
+		x1, x2 = x2, x1
+	}
+
+	// Fill background
+	for row := y1; row <= y2; row++ {
+		for col := x1; col <= x2; col++ {
+			s.SetContent(col, row, ' ', nil, style)
+		}
+	}
+
+	// Draw borders
+	for col := x1; col <= x2; col++ {
+		s.SetContent(col, y1, tcell.RuneHLine, nil, style)
+		s.SetContent(col, y2, tcell.RuneHLine, nil, style)
+	}
+	for row := y1 + 1; row < y2; row++ {
+		s.SetContent(x1, row, tcell.RuneVLine, nil, style)
+		s.SetContent(x2, row, tcell.RuneVLine, nil, style)
+	}
+
+	// Only draw corners if necessary
+	if y1 != y2 && x1 != x2 {
+		s.SetContent(x1, y1, tcell.RuneULCorner, nil, style)
+		s.SetContent(x2, y1, tcell.RuneURCorner, nil, style)
+		s.SetContent(x1, y2, tcell.RuneLLCorner, nil, style)
+		s.SetContent(x2, y2, tcell.RuneLRCorner, nil, style)
+	}
+
+	drawText(s, x1+1, y1+1, x2-1, y2-1, style, text)
+}
+
+func main() {
+	defStyle := tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset)
+	boxStyle := tcell.StyleDefault.Foreground(tcell.ColorWhite).Background(tcell.ColorPurple)
+
+	// Initialize screen
+	s, err := tcell.NewScreen()
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+	if err := s.Init(); err != nil {
+		log.Fatalf("%+v", err)
+	}
+	s.SetStyle(defStyle)
+	s.EnableMouse()
+	s.EnablePaste()
+	s.Clear()
+
+	// Draw initial boxes
+	drawBox(s, 1, 1, 42, 7, boxStyle, "Click and drag to draw a box")
+	drawBox(s, 5, 9, 32, 14, boxStyle, "Press C to reset")
+
+	// Event loop
+	ox, oy := -1, -1
+	quit := func() {
+		s.Fini()
+		os.Exit(0)
+	}
+	for {
+		// Update screen
+		s.Show()
+
+		// Poll event
+		ev := s.PollEvent()
+
+		// Process event
+		switch ev := ev.(type) {
+		case *tcell.EventResize:
+			s.Sync()
+		case *tcell.EventKey:
+			if ev.Key() == tcell.KeyEscape || ev.Key() == tcell.KeyCtrlC {
+				quit()
+			} else if ev.Key() == tcell.KeyCtrlL {
+				s.Sync()
+			} else if ev.Rune() == 'C' || ev.Rune() == 'c' {
+				s.Clear()
+			}
+		case *tcell.EventMouse:
+			x, y := ev.Position()
+			button := ev.Buttons()
+			// Only process button events, not wheel events
+			button &= tcell.ButtonMask(0xff)
+
+			if button != tcell.ButtonNone && ox < 0 {
+				ox, oy = x, y
+			}
+			switch ev.Buttons() {
+			case tcell.ButtonNone:
+				if ox >= 0 {
+					label := fmt.Sprintf("%d,%d to %d,%d", ox, oy, x, y)
+					drawBox(s, ox, oy, x, y, boxStyle, label)
+					ox, oy = -1, -1
+				}
+			}
+		}
+	}
+}
+```
diff --git a/vendor/github.com/gdamore/tcell/v2/attr.go b/vendor/github.com/gdamore/tcell/v2/attr.go
new file mode 100644
index 0000000..8b1eab7
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/attr.go
@@ -0,0 +1,33 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+// AttrMask represents a mask of text attributes, apart from color.
+// Note that support for attributes may vary widely across terminals.
+type AttrMask int
+
+// Attributes are not colors, but affect the display of text.  They can
+// be combined.
+const (
+	AttrBold AttrMask = 1 << iota
+	AttrBlink
+	AttrReverse
+	AttrUnderline
+	AttrDim
+	AttrItalic
+	AttrStrikeThrough
+	AttrInvalid              // Mark the style or attributes invalid
+	AttrNone    AttrMask = 0 // Just normal text.
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/cell.go b/vendor/github.com/gdamore/tcell/v2/cell.go
new file mode 100644
index 0000000..c7f8f1a
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/cell.go
@@ -0,0 +1,177 @@
+// Copyright 2019 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	runewidth "github.com/mattn/go-runewidth"
+)
+
+type cell struct {
+	currMain  rune
+	currComb  []rune
+	currStyle Style
+	lastMain  rune
+	lastStyle Style
+	lastComb  []rune
+	width     int
+}
+
+// CellBuffer represents a two dimensional array of character cells.
+// This is primarily intended for use by Screen implementors; it
+// contains much of the common code they need.  To create one, just
+// declare a variable of its type; no explicit initialization is necessary.
+//
+// CellBuffer is not thread safe.
+type CellBuffer struct {
+	w     int
+	h     int
+	cells []cell
+}
+
+// SetContent sets the contents (primary rune, combining runes,
+// and style) for a cell at a given location.
+func (cb *CellBuffer) SetContent(x int, y int,
+	mainc rune, combc []rune, style Style) {
+
+	if x >= 0 && y >= 0 && x < cb.w && y < cb.h {
+		c := &cb.cells[(y*cb.w)+x]
+
+		c.currComb = append([]rune{}, combc...)
+
+		if c.currMain != mainc {
+			c.width = runewidth.RuneWidth(mainc)
+		}
+		c.currMain = mainc
+		c.currStyle = style
+	}
+}
+
+// GetContent returns the contents of a character cell, including the
+// primary rune, any combining character runes (which will usually be
+// nil), the style, and the display width in cells.  (The width can be
+// either 1, normally, or 2 for East Asian full-width characters.)
+func (cb *CellBuffer) GetContent(x, y int) (rune, []rune, Style, int) {
+	var mainc rune
+	var combc []rune
+	var style Style
+	var width int
+	if x >= 0 && y >= 0 && x < cb.w && y < cb.h {
+		c := &cb.cells[(y*cb.w)+x]
+		mainc, combc, style = c.currMain, c.currComb, c.currStyle
+		if width = c.width; width == 0 || mainc < ' ' {
+			width = 1
+			mainc = ' '
+		}
+	}
+	return mainc, combc, style, width
+}
+
+// Size returns the (width, height) in cells of the buffer.
+func (cb *CellBuffer) Size() (int, int) {
+	return cb.w, cb.h
+}
+
+// Invalidate marks all characters within the buffer as dirty.
+func (cb *CellBuffer) Invalidate() {
+	for i := range cb.cells {
+		cb.cells[i].lastMain = rune(0)
+	}
+}
+
+// Dirty checks if a character at the given location needs an
+// to be refreshed on the physical display.  This returns true
+// if the cell content is different since the last time it was
+// marked clean.
+func (cb *CellBuffer) Dirty(x, y int) bool {
+	if x >= 0 && y >= 0 && x < cb.w && y < cb.h {
+		c := &cb.cells[(y*cb.w)+x]
+		if c.lastMain == rune(0) {
+			return true
+		}
+		if c.lastMain != c.currMain {
+			return true
+		}
+		if c.lastStyle != c.currStyle {
+			return true
+		}
+		if len(c.lastComb) != len(c.currComb) {
+			return true
+		}
+		for i := range c.lastComb {
+			if c.lastComb[i] != c.currComb[i] {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// SetDirty is normally used to indicate that a cell has
+// been displayed (in which case dirty is false), or to manually
+// force a cell to be marked dirty.
+func (cb *CellBuffer) SetDirty(x, y int, dirty bool) {
+	if x >= 0 && y >= 0 && x < cb.w && y < cb.h {
+		c := &cb.cells[(y*cb.w)+x]
+		if dirty {
+			c.lastMain = rune(0)
+		} else {
+			if c.currMain == rune(0) {
+				c.currMain = ' '
+			}
+			c.lastMain = c.currMain
+			c.lastComb = c.currComb
+			c.lastStyle = c.currStyle
+		}
+	}
+}
+
+// Resize is used to resize the cells array, with different dimensions,
+// while preserving the original contents.  The cells will be invalidated
+// so that they can be redrawn.
+func (cb *CellBuffer) Resize(w, h int) {
+
+	if cb.h == h && cb.w == w {
+		return
+	}
+
+	newc := make([]cell, w*h)
+	for y := 0; y < h && y < cb.h; y++ {
+		for x := 0; x < w && x < cb.w; x++ {
+			oc := &cb.cells[(y*cb.w)+x]
+			nc := &newc[(y*w)+x]
+			nc.currMain = oc.currMain
+			nc.currComb = oc.currComb
+			nc.currStyle = oc.currStyle
+			nc.width = oc.width
+			nc.lastMain = rune(0)
+		}
+	}
+	cb.cells = newc
+	cb.h = h
+	cb.w = w
+}
+
+// Fill fills the entire cell buffer array with the specified character
+// and style.  Normally choose ' ' to clear the screen.  This API doesn't
+// support combining characters, or characters with a width larger than one.
+func (cb *CellBuffer) Fill(r rune, style Style) {
+	for i := range cb.cells {
+		c := &cb.cells[i]
+		c.currMain = r
+		c.currComb = nil
+		c.currStyle = style
+		c.width = 1
+	}
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/charset_stub.go b/vendor/github.com/gdamore/tcell/v2/charset_stub.go
new file mode 100644
index 0000000..c1c1594
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/charset_stub.go
@@ -0,0 +1,21 @@
+// +build plan9 nacl
+
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+func getCharset() string {
+	return ""
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/charset_unix.go b/vendor/github.com/gdamore/tcell/v2/charset_unix.go
new file mode 100644
index 0000000..d9f9d8e
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/charset_unix.go
@@ -0,0 +1,49 @@
+// +build !windows,!nacl,!plan9
+
+// Copyright 2016 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"os"
+	"strings"
+)
+
+func getCharset() string {
+	// Determine the character set.  This can help us later.
+	// Per POSIX, we search for LC_ALL first, then LC_CTYPE, and
+	// finally LANG.  First one set wins.
+	locale := ""
+	if locale = os.Getenv("LC_ALL"); locale == "" {
+		if locale = os.Getenv("LC_CTYPE"); locale == "" {
+			locale = os.Getenv("LANG")
+		}
+	}
+	if locale == "POSIX" || locale == "C" {
+		return "US-ASCII"
+	}
+	if i := strings.IndexRune(locale, '@'); i >= 0 {
+		locale = locale[:i]
+	}
+	if i := strings.IndexRune(locale, '.'); i >= 0 {
+		locale = locale[i+1:]
+	} else {
+		// Default assumption, and on Linux we can see LC_ALL
+		// without a character set, which we assume implies UTF-8.
+		return "UTF-8"
+	}
+	// XXX: add support for aliases
+	return locale
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/charset_windows.go b/vendor/github.com/gdamore/tcell/v2/charset_windows.go
new file mode 100644
index 0000000..2400aa8
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/charset_windows.go
@@ -0,0 +1,21 @@
+// +build windows
+
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+func getCharset() string {
+	return "UTF-16"
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/color.go b/vendor/github.com/gdamore/tcell/v2/color.go
new file mode 100644
index 0000000..8e50fa3
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/color.go
@@ -0,0 +1,1081 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	ic "image/color"
+	"strconv"
+)
+
+// Color represents a color.  The low numeric values are the same as used
+// by ECMA-48, and beyond that XTerm.  A 24-bit RGB value may be used by
+// adding in the ColorIsRGB flag.  For Color names we use the W3C approved
+// color names.
+//
+// We use a 64-bit integer to allow future expansion if we want to add an
+// 8-bit alpha, while still leaving us some room for extra options.
+//
+// Note that on various terminals colors may be approximated however, or
+// not supported at all.  If no suitable representation for a color is known,
+// the library will simply not set any color, deferring to whatever default
+// attributes the terminal uses.
+type Color uint64
+
+const (
+	// ColorDefault is used to leave the Color unchanged from whatever
+	// system or terminal default may exist.  It's also the zero value.
+	ColorDefault Color = 0
+
+	// ColorValid is used to indicate the color value is actually
+	// valid (initialized).  This is useful to permit the zero value
+	// to be treated as the default.
+	ColorValid Color = 1 << 32
+
+	// ColorIsRGB is used to indicate that the numeric value is not
+	// a known color constant, but rather an RGB value.  The lower
+	// order 3 bytes are RGB.
+	ColorIsRGB Color = 1 << 33
+
+	// ColorSpecial is a flag used to indicate that the values have
+	// special meaning, and live outside of the color space(s).
+	ColorSpecial Color = 1 << 34
+)
+
+// Note that the order of these options is important -- it follows the
+// definitions used by ECMA and XTerm.  Hence any further named colors
+// must begin at a value not less than 256.
+const (
+	ColorBlack = ColorValid + iota
+	ColorMaroon
+	ColorGreen
+	ColorOlive
+	ColorNavy
+	ColorPurple
+	ColorTeal
+	ColorSilver
+	ColorGray
+	ColorRed
+	ColorLime
+	ColorYellow
+	ColorBlue
+	ColorFuchsia
+	ColorAqua
+	ColorWhite
+	Color16
+	Color17
+	Color18
+	Color19
+	Color20
+	Color21
+	Color22
+	Color23
+	Color24
+	Color25
+	Color26
+	Color27
+	Color28
+	Color29
+	Color30
+	Color31
+	Color32
+	Color33
+	Color34
+	Color35
+	Color36
+	Color37
+	Color38
+	Color39
+	Color40
+	Color41
+	Color42
+	Color43
+	Color44
+	Color45
+	Color46
+	Color47
+	Color48
+	Color49
+	Color50
+	Color51
+	Color52
+	Color53
+	Color54
+	Color55
+	Color56
+	Color57
+	Color58
+	Color59
+	Color60
+	Color61
+	Color62
+	Color63
+	Color64
+	Color65
+	Color66
+	Color67
+	Color68
+	Color69
+	Color70
+	Color71
+	Color72
+	Color73
+	Color74
+	Color75
+	Color76
+	Color77
+	Color78
+	Color79
+	Color80
+	Color81
+	Color82
+	Color83
+	Color84
+	Color85
+	Color86
+	Color87
+	Color88
+	Color89
+	Color90
+	Color91
+	Color92
+	Color93
+	Color94
+	Color95
+	Color96
+	Color97
+	Color98
+	Color99
+	Color100
+	Color101
+	Color102
+	Color103
+	Color104
+	Color105
+	Color106
+	Color107
+	Color108
+	Color109
+	Color110
+	Color111
+	Color112
+	Color113
+	Color114
+	Color115
+	Color116
+	Color117
+	Color118
+	Color119
+	Color120
+	Color121
+	Color122
+	Color123
+	Color124
+	Color125
+	Color126
+	Color127
+	Color128
+	Color129
+	Color130
+	Color131
+	Color132
+	Color133
+	Color134
+	Color135
+	Color136
+	Color137
+	Color138
+	Color139
+	Color140
+	Color141
+	Color142
+	Color143
+	Color144
+	Color145
+	Color146
+	Color147
+	Color148
+	Color149
+	Color150
+	Color151
+	Color152
+	Color153
+	Color154
+	Color155
+	Color156
+	Color157
+	Color158
+	Color159
+	Color160
+	Color161
+	Color162
+	Color163
+	Color164
+	Color165
+	Color166
+	Color167
+	Color168
+	Color169
+	Color170
+	Color171
+	Color172
+	Color173
+	Color174
+	Color175
+	Color176
+	Color177
+	Color178
+	Color179
+	Color180
+	Color181
+	Color182
+	Color183
+	Color184
+	Color185
+	Color186
+	Color187
+	Color188
+	Color189
+	Color190
+	Color191
+	Color192
+	Color193
+	Color194
+	Color195
+	Color196
+	Color197
+	Color198
+	Color199
+	Color200
+	Color201
+	Color202
+	Color203
+	Color204
+	Color205
+	Color206
+	Color207
+	Color208
+	Color209
+	Color210
+	Color211
+	Color212
+	Color213
+	Color214
+	Color215
+	Color216
+	Color217
+	Color218
+	Color219
+	Color220
+	Color221
+	Color222
+	Color223
+	Color224
+	Color225
+	Color226
+	Color227
+	Color228
+	Color229
+	Color230
+	Color231
+	Color232
+	Color233
+	Color234
+	Color235
+	Color236
+	Color237
+	Color238
+	Color239
+	Color240
+	Color241
+	Color242
+	Color243
+	Color244
+	Color245
+	Color246
+	Color247
+	Color248
+	Color249
+	Color250
+	Color251
+	Color252
+	Color253
+	Color254
+	Color255
+	ColorAliceBlue
+	ColorAntiqueWhite
+	ColorAquaMarine
+	ColorAzure
+	ColorBeige
+	ColorBisque
+	ColorBlanchedAlmond
+	ColorBlueViolet
+	ColorBrown
+	ColorBurlyWood
+	ColorCadetBlue
+	ColorChartreuse
+	ColorChocolate
+	ColorCoral
+	ColorCornflowerBlue
+	ColorCornsilk
+	ColorCrimson
+	ColorDarkBlue
+	ColorDarkCyan
+	ColorDarkGoldenrod
+	ColorDarkGray
+	ColorDarkGreen
+	ColorDarkKhaki
+	ColorDarkMagenta
+	ColorDarkOliveGreen
+	ColorDarkOrange
+	ColorDarkOrchid
+	ColorDarkRed
+	ColorDarkSalmon
+	ColorDarkSeaGreen
+	ColorDarkSlateBlue
+	ColorDarkSlateGray
+	ColorDarkTurquoise
+	ColorDarkViolet
+	ColorDeepPink
+	ColorDeepSkyBlue
+	ColorDimGray
+	ColorDodgerBlue
+	ColorFireBrick
+	ColorFloralWhite
+	ColorForestGreen
+	ColorGainsboro
+	ColorGhostWhite
+	ColorGold
+	ColorGoldenrod
+	ColorGreenYellow
+	ColorHoneydew
+	ColorHotPink
+	ColorIndianRed
+	ColorIndigo
+	ColorIvory
+	ColorKhaki
+	ColorLavender
+	ColorLavenderBlush
+	ColorLawnGreen
+	ColorLemonChiffon
+	ColorLightBlue
+	ColorLightCoral
+	ColorLightCyan
+	ColorLightGoldenrodYellow
+	ColorLightGray
+	ColorLightGreen
+	ColorLightPink
+	ColorLightSalmon
+	ColorLightSeaGreen
+	ColorLightSkyBlue
+	ColorLightSlateGray
+	ColorLightSteelBlue
+	ColorLightYellow
+	ColorLimeGreen
+	ColorLinen
+	ColorMediumAquamarine
+	ColorMediumBlue
+	ColorMediumOrchid
+	ColorMediumPurple
+	ColorMediumSeaGreen
+	ColorMediumSlateBlue
+	ColorMediumSpringGreen
+	ColorMediumTurquoise
+	ColorMediumVioletRed
+	ColorMidnightBlue
+	ColorMintCream
+	ColorMistyRose
+	ColorMoccasin
+	ColorNavajoWhite
+	ColorOldLace
+	ColorOliveDrab
+	ColorOrange
+	ColorOrangeRed
+	ColorOrchid
+	ColorPaleGoldenrod
+	ColorPaleGreen
+	ColorPaleTurquoise
+	ColorPaleVioletRed
+	ColorPapayaWhip
+	ColorPeachPuff
+	ColorPeru
+	ColorPink
+	ColorPlum
+	ColorPowderBlue
+	ColorRebeccaPurple
+	ColorRosyBrown
+	ColorRoyalBlue
+	ColorSaddleBrown
+	ColorSalmon
+	ColorSandyBrown
+	ColorSeaGreen
+	ColorSeashell
+	ColorSienna
+	ColorSkyblue
+	ColorSlateBlue
+	ColorSlateGray
+	ColorSnow
+	ColorSpringGreen
+	ColorSteelBlue
+	ColorTan
+	ColorThistle
+	ColorTomato
+	ColorTurquoise
+	ColorViolet
+	ColorWheat
+	ColorWhiteSmoke
+	ColorYellowGreen
+)
+
+// These are aliases for the color gray, because some of us spell
+// it as grey.
+const (
+	ColorGrey           = ColorGray
+	ColorDimGrey        = ColorDimGray
+	ColorDarkGrey       = ColorDarkGray
+	ColorDarkSlateGrey  = ColorDarkSlateGray
+	ColorLightGrey      = ColorLightGray
+	ColorLightSlateGrey = ColorLightSlateGray
+	ColorSlateGrey      = ColorSlateGray
+)
+
+// ColorValues maps color constants to their RGB values.
+var ColorValues = map[Color]int32{
+	ColorBlack:                0x000000,
+	ColorMaroon:               0x800000,
+	ColorGreen:                0x008000,
+	ColorOlive:                0x808000,
+	ColorNavy:                 0x000080,
+	ColorPurple:               0x800080,
+	ColorTeal:                 0x008080,
+	ColorSilver:               0xC0C0C0,
+	ColorGray:                 0x808080,
+	ColorRed:                  0xFF0000,
+	ColorLime:                 0x00FF00,
+	ColorYellow:               0xFFFF00,
+	ColorBlue:                 0x0000FF,
+	ColorFuchsia:              0xFF00FF,
+	ColorAqua:                 0x00FFFF,
+	ColorWhite:                0xFFFFFF,
+	Color16:                   0x000000, // black
+	Color17:                   0x00005F,
+	Color18:                   0x000087,
+	Color19:                   0x0000AF,
+	Color20:                   0x0000D7,
+	Color21:                   0x0000FF, // blue
+	Color22:                   0x005F00,
+	Color23:                   0x005F5F,
+	Color24:                   0x005F87,
+	Color25:                   0x005FAF,
+	Color26:                   0x005FD7,
+	Color27:                   0x005FFF,
+	Color28:                   0x008700,
+	Color29:                   0x00875F,
+	Color30:                   0x008787,
+	Color31:                   0x0087Af,
+	Color32:                   0x0087D7,
+	Color33:                   0x0087FF,
+	Color34:                   0x00AF00,
+	Color35:                   0x00AF5F,
+	Color36:                   0x00AF87,
+	Color37:                   0x00AFAF,
+	Color38:                   0x00AFD7,
+	Color39:                   0x00AFFF,
+	Color40:                   0x00D700,
+	Color41:                   0x00D75F,
+	Color42:                   0x00D787,
+	Color43:                   0x00D7AF,
+	Color44:                   0x00D7D7,
+	Color45:                   0x00D7FF,
+	Color46:                   0x00FF00, // lime
+	Color47:                   0x00FF5F,
+	Color48:                   0x00FF87,
+	Color49:                   0x00FFAF,
+	Color50:                   0x00FFd7,
+	Color51:                   0x00FFFF, // aqua
+	Color52:                   0x5F0000,
+	Color53:                   0x5F005F,
+	Color54:                   0x5F0087,
+	Color55:                   0x5F00AF,
+	Color56:                   0x5F00D7,
+	Color57:                   0x5F00FF,
+	Color58:                   0x5F5F00,
+	Color59:                   0x5F5F5F,
+	Color60:                   0x5F5F87,
+	Color61:                   0x5F5FAF,
+	Color62:                   0x5F5FD7,
+	Color63:                   0x5F5FFF,
+	Color64:                   0x5F8700,
+	Color65:                   0x5F875F,
+	Color66:                   0x5F8787,
+	Color67:                   0x5F87AF,
+	Color68:                   0x5F87D7,
+	Color69:                   0x5F87FF,
+	Color70:                   0x5FAF00,
+	Color71:                   0x5FAF5F,
+	Color72:                   0x5FAF87,
+	Color73:                   0x5FAFAF,
+	Color74:                   0x5FAFD7,
+	Color75:                   0x5FAFFF,
+	Color76:                   0x5FD700,
+	Color77:                   0x5FD75F,
+	Color78:                   0x5FD787,
+	Color79:                   0x5FD7AF,
+	Color80:                   0x5FD7D7,
+	Color81:                   0x5FD7FF,
+	Color82:                   0x5FFF00,
+	Color83:                   0x5FFF5F,
+	Color84:                   0x5FFF87,
+	Color85:                   0x5FFFAF,
+	Color86:                   0x5FFFD7,
+	Color87:                   0x5FFFFF,
+	Color88:                   0x870000,
+	Color89:                   0x87005F,
+	Color90:                   0x870087,
+	Color91:                   0x8700AF,
+	Color92:                   0x8700D7,
+	Color93:                   0x8700FF,
+	Color94:                   0x875F00,
+	Color95:                   0x875F5F,
+	Color96:                   0x875F87,
+	Color97:                   0x875FAF,
+	Color98:                   0x875FD7,
+	Color99:                   0x875FFF,
+	Color100:                  0x878700,
+	Color101:                  0x87875F,
+	Color102:                  0x878787,
+	Color103:                  0x8787AF,
+	Color104:                  0x8787D7,
+	Color105:                  0x8787FF,
+	Color106:                  0x87AF00,
+	Color107:                  0x87AF5F,
+	Color108:                  0x87AF87,
+	Color109:                  0x87AFAF,
+	Color110:                  0x87AFD7,
+	Color111:                  0x87AFFF,
+	Color112:                  0x87D700,
+	Color113:                  0x87D75F,
+	Color114:                  0x87D787,
+	Color115:                  0x87D7AF,
+	Color116:                  0x87D7D7,
+	Color117:                  0x87D7FF,
+	Color118:                  0x87FF00,
+	Color119:                  0x87FF5F,
+	Color120:                  0x87FF87,
+	Color121:                  0x87FFAF,
+	Color122:                  0x87FFD7,
+	Color123:                  0x87FFFF,
+	Color124:                  0xAF0000,
+	Color125:                  0xAF005F,
+	Color126:                  0xAF0087,
+	Color127:                  0xAF00AF,
+	Color128:                  0xAF00D7,
+	Color129:                  0xAF00FF,
+	Color130:                  0xAF5F00,
+	Color131:                  0xAF5F5F,
+	Color132:                  0xAF5F87,
+	Color133:                  0xAF5FAF,
+	Color134:                  0xAF5FD7,
+	Color135:                  0xAF5FFF,
+	Color136:                  0xAF8700,
+	Color137:                  0xAF875F,
+	Color138:                  0xAF8787,
+	Color139:                  0xAF87AF,
+	Color140:                  0xAF87D7,
+	Color141:                  0xAF87FF,
+	Color142:                  0xAFAF00,
+	Color143:                  0xAFAF5F,
+	Color144:                  0xAFAF87,
+	Color145:                  0xAFAFAF,
+	Color146:                  0xAFAFD7,
+	Color147:                  0xAFAFFF,
+	Color148:                  0xAFD700,
+	Color149:                  0xAFD75F,
+	Color150:                  0xAFD787,
+	Color151:                  0xAFD7AF,
+	Color152:                  0xAFD7D7,
+	Color153:                  0xAFD7FF,
+	Color154:                  0xAFFF00,
+	Color155:                  0xAFFF5F,
+	Color156:                  0xAFFF87,
+	Color157:                  0xAFFFAF,
+	Color158:                  0xAFFFD7,
+	Color159:                  0xAFFFFF,
+	Color160:                  0xD70000,
+	Color161:                  0xD7005F,
+	Color162:                  0xD70087,
+	Color163:                  0xD700AF,
+	Color164:                  0xD700D7,
+	Color165:                  0xD700FF,
+	Color166:                  0xD75F00,
+	Color167:                  0xD75F5F,
+	Color168:                  0xD75F87,
+	Color169:                  0xD75FAF,
+	Color170:                  0xD75FD7,
+	Color171:                  0xD75FFF,
+	Color172:                  0xD78700,
+	Color173:                  0xD7875F,
+	Color174:                  0xD78787,
+	Color175:                  0xD787AF,
+	Color176:                  0xD787D7,
+	Color177:                  0xD787FF,
+	Color178:                  0xD7AF00,
+	Color179:                  0xD7AF5F,
+	Color180:                  0xD7AF87,
+	Color181:                  0xD7AFAF,
+	Color182:                  0xD7AFD7,
+	Color183:                  0xD7AFFF,
+	Color184:                  0xD7D700,
+	Color185:                  0xD7D75F,
+	Color186:                  0xD7D787,
+	Color187:                  0xD7D7AF,
+	Color188:                  0xD7D7D7,
+	Color189:                  0xD7D7FF,
+	Color190:                  0xD7FF00,
+	Color191:                  0xD7FF5F,
+	Color192:                  0xD7FF87,
+	Color193:                  0xD7FFAF,
+	Color194:                  0xD7FFD7,
+	Color195:                  0xD7FFFF,
+	Color196:                  0xFF0000, // red
+	Color197:                  0xFF005F,
+	Color198:                  0xFF0087,
+	Color199:                  0xFF00AF,
+	Color200:                  0xFF00D7,
+	Color201:                  0xFF00FF, // fuchsia
+	Color202:                  0xFF5F00,
+	Color203:                  0xFF5F5F,
+	Color204:                  0xFF5F87,
+	Color205:                  0xFF5FAF,
+	Color206:                  0xFF5FD7,
+	Color207:                  0xFF5FFF,
+	Color208:                  0xFF8700,
+	Color209:                  0xFF875F,
+	Color210:                  0xFF8787,
+	Color211:                  0xFF87AF,
+	Color212:                  0xFF87D7,
+	Color213:                  0xFF87FF,
+	Color214:                  0xFFAF00,
+	Color215:                  0xFFAF5F,
+	Color216:                  0xFFAF87,
+	Color217:                  0xFFAFAF,
+	Color218:                  0xFFAFD7,
+	Color219:                  0xFFAFFF,
+	Color220:                  0xFFD700,
+	Color221:                  0xFFD75F,
+	Color222:                  0xFFD787,
+	Color223:                  0xFFD7AF,
+	Color224:                  0xFFD7D7,
+	Color225:                  0xFFD7FF,
+	Color226:                  0xFFFF00, // yellow
+	Color227:                  0xFFFF5F,
+	Color228:                  0xFFFF87,
+	Color229:                  0xFFFFAF,
+	Color230:                  0xFFFFD7,
+	Color231:                  0xFFFFFF, // white
+	Color232:                  0x080808,
+	Color233:                  0x121212,
+	Color234:                  0x1C1C1C,
+	Color235:                  0x262626,
+	Color236:                  0x303030,
+	Color237:                  0x3A3A3A,
+	Color238:                  0x444444,
+	Color239:                  0x4E4E4E,
+	Color240:                  0x585858,
+	Color241:                  0x626262,
+	Color242:                  0x6C6C6C,
+	Color243:                  0x767676,
+	Color244:                  0x808080, // grey
+	Color245:                  0x8A8A8A,
+	Color246:                  0x949494,
+	Color247:                  0x9E9E9E,
+	Color248:                  0xA8A8A8,
+	Color249:                  0xB2B2B2,
+	Color250:                  0xBCBCBC,
+	Color251:                  0xC6C6C6,
+	Color252:                  0xD0D0D0,
+	Color253:                  0xDADADA,
+	Color254:                  0xE4E4E4,
+	Color255:                  0xEEEEEE,
+	ColorAliceBlue:            0xF0F8FF,
+	ColorAntiqueWhite:         0xFAEBD7,
+	ColorAquaMarine:           0x7FFFD4,
+	ColorAzure:                0xF0FFFF,
+	ColorBeige:                0xF5F5DC,
+	ColorBisque:               0xFFE4C4,
+	ColorBlanchedAlmond:       0xFFEBCD,
+	ColorBlueViolet:           0x8A2BE2,
+	ColorBrown:                0xA52A2A,
+	ColorBurlyWood:            0xDEB887,
+	ColorCadetBlue:            0x5F9EA0,
+	ColorChartreuse:           0x7FFF00,
+	ColorChocolate:            0xD2691E,
+	ColorCoral:                0xFF7F50,
+	ColorCornflowerBlue:       0x6495ED,
+	ColorCornsilk:             0xFFF8DC,
+	ColorCrimson:              0xDC143C,
+	ColorDarkBlue:             0x00008B,
+	ColorDarkCyan:             0x008B8B,
+	ColorDarkGoldenrod:        0xB8860B,
+	ColorDarkGray:             0xA9A9A9,
+	ColorDarkGreen:            0x006400,
+	ColorDarkKhaki:            0xBDB76B,
+	ColorDarkMagenta:          0x8B008B,
+	ColorDarkOliveGreen:       0x556B2F,
+	ColorDarkOrange:           0xFF8C00,
+	ColorDarkOrchid:           0x9932CC,
+	ColorDarkRed:              0x8B0000,
+	ColorDarkSalmon:           0xE9967A,
+	ColorDarkSeaGreen:         0x8FBC8F,
+	ColorDarkSlateBlue:        0x483D8B,
+	ColorDarkSlateGray:        0x2F4F4F,
+	ColorDarkTurquoise:        0x00CED1,
+	ColorDarkViolet:           0x9400D3,
+	ColorDeepPink:             0xFF1493,
+	ColorDeepSkyBlue:          0x00BFFF,
+	ColorDimGray:              0x696969,
+	ColorDodgerBlue:           0x1E90FF,
+	ColorFireBrick:            0xB22222,
+	ColorFloralWhite:          0xFFFAF0,
+	ColorForestGreen:          0x228B22,
+	ColorGainsboro:            0xDCDCDC,
+	ColorGhostWhite:           0xF8F8FF,
+	ColorGold:                 0xFFD700,
+	ColorGoldenrod:            0xDAA520,
+	ColorGreenYellow:          0xADFF2F,
+	ColorHoneydew:             0xF0FFF0,
+	ColorHotPink:              0xFF69B4,
+	ColorIndianRed:            0xCD5C5C,
+	ColorIndigo:               0x4B0082,
+	ColorIvory:                0xFFFFF0,
+	ColorKhaki:                0xF0E68C,
+	ColorLavender:             0xE6E6FA,
+	ColorLavenderBlush:        0xFFF0F5,
+	ColorLawnGreen:            0x7CFC00,
+	ColorLemonChiffon:         0xFFFACD,
+	ColorLightBlue:            0xADD8E6,
+	ColorLightCoral:           0xF08080,
+	ColorLightCyan:            0xE0FFFF,
+	ColorLightGoldenrodYellow: 0xFAFAD2,
+	ColorLightGray:            0xD3D3D3,
+	ColorLightGreen:           0x90EE90,
+	ColorLightPink:            0xFFB6C1,
+	ColorLightSalmon:          0xFFA07A,
+	ColorLightSeaGreen:        0x20B2AA,
+	ColorLightSkyBlue:         0x87CEFA,
+	ColorLightSlateGray:       0x778899,
+	ColorLightSteelBlue:       0xB0C4DE,
+	ColorLightYellow:          0xFFFFE0,
+	ColorLimeGreen:            0x32CD32,
+	ColorLinen:                0xFAF0E6,
+	ColorMediumAquamarine:     0x66CDAA,
+	ColorMediumBlue:           0x0000CD,
+	ColorMediumOrchid:         0xBA55D3,
+	ColorMediumPurple:         0x9370DB,
+	ColorMediumSeaGreen:       0x3CB371,
+	ColorMediumSlateBlue:      0x7B68EE,
+	ColorMediumSpringGreen:    0x00FA9A,
+	ColorMediumTurquoise:      0x48D1CC,
+	ColorMediumVioletRed:      0xC71585,
+	ColorMidnightBlue:         0x191970,
+	ColorMintCream:            0xF5FFFA,
+	ColorMistyRose:            0xFFE4E1,
+	ColorMoccasin:             0xFFE4B5,
+	ColorNavajoWhite:          0xFFDEAD,
+	ColorOldLace:              0xFDF5E6,
+	ColorOliveDrab:            0x6B8E23,
+	ColorOrange:               0xFFA500,
+	ColorOrangeRed:            0xFF4500,
+	ColorOrchid:               0xDA70D6,
+	ColorPaleGoldenrod:        0xEEE8AA,
+	ColorPaleGreen:            0x98FB98,
+	ColorPaleTurquoise:        0xAFEEEE,
+	ColorPaleVioletRed:        0xDB7093,
+	ColorPapayaWhip:           0xFFEFD5,
+	ColorPeachPuff:            0xFFDAB9,
+	ColorPeru:                 0xCD853F,
+	ColorPink:                 0xFFC0CB,
+	ColorPlum:                 0xDDA0DD,
+	ColorPowderBlue:           0xB0E0E6,
+	ColorRebeccaPurple:        0x663399,
+	ColorRosyBrown:            0xBC8F8F,
+	ColorRoyalBlue:            0x4169E1,
+	ColorSaddleBrown:          0x8B4513,
+	ColorSalmon:               0xFA8072,
+	ColorSandyBrown:           0xF4A460,
+	ColorSeaGreen:             0x2E8B57,
+	ColorSeashell:             0xFFF5EE,
+	ColorSienna:               0xA0522D,
+	ColorSkyblue:              0x87CEEB,
+	ColorSlateBlue:            0x6A5ACD,
+	ColorSlateGray:            0x708090,
+	ColorSnow:                 0xFFFAFA,
+	ColorSpringGreen:          0x00FF7F,
+	ColorSteelBlue:            0x4682B4,
+	ColorTan:                  0xD2B48C,
+	ColorThistle:              0xD8BFD8,
+	ColorTomato:               0xFF6347,
+	ColorTurquoise:            0x40E0D0,
+	ColorViolet:               0xEE82EE,
+	ColorWheat:                0xF5DEB3,
+	ColorWhiteSmoke:           0xF5F5F5,
+	ColorYellowGreen:          0x9ACD32,
+}
+
+// Special colors.
+const (
+	// ColorReset is used to indicate that the color should use the
+	// vanilla terminal colors.  (Basically go back to the defaults.)
+	ColorReset = ColorSpecial | iota
+)
+
+// ColorNames holds the written names of colors. Useful to present a list of
+// recognized named colors.
+var ColorNames = map[string]Color{
+	"black":                ColorBlack,
+	"maroon":               ColorMaroon,
+	"green":                ColorGreen,
+	"olive":                ColorOlive,
+	"navy":                 ColorNavy,
+	"purple":               ColorPurple,
+	"teal":                 ColorTeal,
+	"silver":               ColorSilver,
+	"gray":                 ColorGray,
+	"red":                  ColorRed,
+	"lime":                 ColorLime,
+	"yellow":               ColorYellow,
+	"blue":                 ColorBlue,
+	"fuchsia":              ColorFuchsia,
+	"aqua":                 ColorAqua,
+	"white":                ColorWhite,
+	"aliceblue":            ColorAliceBlue,
+	"antiquewhite":         ColorAntiqueWhite,
+	"aquamarine":           ColorAquaMarine,
+	"azure":                ColorAzure,
+	"beige":                ColorBeige,
+	"bisque":               ColorBisque,
+	"blanchedalmond":       ColorBlanchedAlmond,
+	"blueviolet":           ColorBlueViolet,
+	"brown":                ColorBrown,
+	"burlywood":            ColorBurlyWood,
+	"cadetblue":            ColorCadetBlue,
+	"chartreuse":           ColorChartreuse,
+	"chocolate":            ColorChocolate,
+	"coral":                ColorCoral,
+	"cornflowerblue":       ColorCornflowerBlue,
+	"cornsilk":             ColorCornsilk,
+	"crimson":              ColorCrimson,
+	"darkblue":             ColorDarkBlue,
+	"darkcyan":             ColorDarkCyan,
+	"darkgoldenrod":        ColorDarkGoldenrod,
+	"darkgray":             ColorDarkGray,
+	"darkgreen":            ColorDarkGreen,
+	"darkkhaki":            ColorDarkKhaki,
+	"darkmagenta":          ColorDarkMagenta,
+	"darkolivegreen":       ColorDarkOliveGreen,
+	"darkorange":           ColorDarkOrange,
+	"darkorchid":           ColorDarkOrchid,
+	"darkred":              ColorDarkRed,
+	"darksalmon":           ColorDarkSalmon,
+	"darkseagreen":         ColorDarkSeaGreen,
+	"darkslateblue":        ColorDarkSlateBlue,
+	"darkslategray":        ColorDarkSlateGray,
+	"darkturquoise":        ColorDarkTurquoise,
+	"darkviolet":           ColorDarkViolet,
+	"deeppink":             ColorDeepPink,
+	"deepskyblue":          ColorDeepSkyBlue,
+	"dimgray":              ColorDimGray,
+	"dodgerblue":           ColorDodgerBlue,
+	"firebrick":            ColorFireBrick,
+	"floralwhite":          ColorFloralWhite,
+	"forestgreen":          ColorForestGreen,
+	"gainsboro":            ColorGainsboro,
+	"ghostwhite":           ColorGhostWhite,
+	"gold":                 ColorGold,
+	"goldenrod":            ColorGoldenrod,
+	"greenyellow":          ColorGreenYellow,
+	"honeydew":             ColorHoneydew,
+	"hotpink":              ColorHotPink,
+	"indianred":            ColorIndianRed,
+	"indigo":               ColorIndigo,
+	"ivory":                ColorIvory,
+	"khaki":                ColorKhaki,
+	"lavender":             ColorLavender,
+	"lavenderblush":        ColorLavenderBlush,
+	"lawngreen":            ColorLawnGreen,
+	"lemonchiffon":         ColorLemonChiffon,
+	"lightblue":            ColorLightBlue,
+	"lightcoral":           ColorLightCoral,
+	"lightcyan":            ColorLightCyan,
+	"lightgoldenrodyellow": ColorLightGoldenrodYellow,
+	"lightgray":            ColorLightGray,
+	"lightgreen":           ColorLightGreen,
+	"lightpink":            ColorLightPink,
+	"lightsalmon":          ColorLightSalmon,
+	"lightseagreen":        ColorLightSeaGreen,
+	"lightskyblue":         ColorLightSkyBlue,
+	"lightslategray":       ColorLightSlateGray,
+	"lightsteelblue":       ColorLightSteelBlue,
+	"lightyellow":          ColorLightYellow,
+	"limegreen":            ColorLimeGreen,
+	"linen":                ColorLinen,
+	"mediumaquamarine":     ColorMediumAquamarine,
+	"mediumblue":           ColorMediumBlue,
+	"mediumorchid":         ColorMediumOrchid,
+	"mediumpurple":         ColorMediumPurple,
+	"mediumseagreen":       ColorMediumSeaGreen,
+	"mediumslateblue":      ColorMediumSlateBlue,
+	"mediumspringgreen":    ColorMediumSpringGreen,
+	"mediumturquoise":      ColorMediumTurquoise,
+	"mediumvioletred":      ColorMediumVioletRed,
+	"midnightblue":         ColorMidnightBlue,
+	"mintcream":            ColorMintCream,
+	"mistyrose":            ColorMistyRose,
+	"moccasin":             ColorMoccasin,
+	"navajowhite":          ColorNavajoWhite,
+	"oldlace":              ColorOldLace,
+	"olivedrab":            ColorOliveDrab,
+	"orange":               ColorOrange,
+	"orangered":            ColorOrangeRed,
+	"orchid":               ColorOrchid,
+	"palegoldenrod":        ColorPaleGoldenrod,
+	"palegreen":            ColorPaleGreen,
+	"paleturquoise":        ColorPaleTurquoise,
+	"palevioletred":        ColorPaleVioletRed,
+	"papayawhip":           ColorPapayaWhip,
+	"peachpuff":            ColorPeachPuff,
+	"peru":                 ColorPeru,
+	"pink":                 ColorPink,
+	"plum":                 ColorPlum,
+	"powderblue":           ColorPowderBlue,
+	"rebeccapurple":        ColorRebeccaPurple,
+	"rosybrown":            ColorRosyBrown,
+	"royalblue":            ColorRoyalBlue,
+	"saddlebrown":          ColorSaddleBrown,
+	"salmon":               ColorSalmon,
+	"sandybrown":           ColorSandyBrown,
+	"seagreen":             ColorSeaGreen,
+	"seashell":             ColorSeashell,
+	"sienna":               ColorSienna,
+	"skyblue":              ColorSkyblue,
+	"slateblue":            ColorSlateBlue,
+	"slategray":            ColorSlateGray,
+	"snow":                 ColorSnow,
+	"springgreen":          ColorSpringGreen,
+	"steelblue":            ColorSteelBlue,
+	"tan":                  ColorTan,
+	"thistle":              ColorThistle,
+	"tomato":               ColorTomato,
+	"turquoise":            ColorTurquoise,
+	"violet":               ColorViolet,
+	"wheat":                ColorWheat,
+	"whitesmoke":           ColorWhiteSmoke,
+	"yellowgreen":          ColorYellowGreen,
+	"grey":                 ColorGray,
+	"dimgrey":              ColorDimGray,
+	"darkgrey":             ColorDarkGray,
+	"darkslategrey":        ColorDarkSlateGray,
+	"lightgrey":            ColorLightGray,
+	"lightslategrey":       ColorLightSlateGray,
+	"slategrey":            ColorSlateGray,
+}
+
+// Valid indicates the color is a valid value (has been set).
+func (c Color) Valid() bool {
+	return c&ColorValid != 0
+}
+
+// IsRGB is true if the color is an RGB specific value.
+func (c Color) IsRGB() bool {
+	return c&(ColorValid|ColorIsRGB) == (ColorValid | ColorIsRGB)
+}
+
+// Hex returns the color's hexadecimal RGB 24-bit value with each component
+// consisting of a single byte, ala R << 16 | G << 8 | B.  If the color
+// is unknown or unset, -1 is returned.
+func (c Color) Hex() int32 {
+	if !c.Valid() {
+		return -1
+	}
+	if c&ColorIsRGB != 0 {
+		return int32(c) & 0xffffff
+	}
+	if v, ok := ColorValues[c]; ok {
+		return v
+	}
+	return -1
+}
+
+// RGB returns the red, green, and blue components of the color, with
+// each component represented as a value 0-255.  In the event that the
+// color cannot be broken up (not set usually), -1 is returned for each value.
+func (c Color) RGB() (int32, int32, int32) {
+	v := c.Hex()
+	if v < 0 {
+		return -1, -1, -1
+	}
+	return (v >> 16) & 0xff, (v >> 8) & 0xff, v & 0xff
+}
+
+// TrueColor returns the true color (RGB) version of the provided color.
+// This is useful for ensuring color accuracy when using named colors.
+// This will override terminal theme colors.
+func (c Color) TrueColor() Color {
+	if !c.Valid() {
+		return ColorDefault
+	}
+	if c&ColorIsRGB != 0 {
+		return c
+	}
+	return Color(c.Hex()) | ColorIsRGB | ColorValid
+}
+
+// NewRGBColor returns a new color with the given red, green, and blue values.
+// Each value must be represented in the range 0-255.
+func NewRGBColor(r, g, b int32) Color {
+	return NewHexColor(((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff))
+}
+
+// NewHexColor returns a color using the given 24-bit RGB value.
+func NewHexColor(v int32) Color {
+	return ColorIsRGB | Color(v) | ColorValid
+}
+
+// GetColor creates a Color from a color name (W3C name). A hex value may
+// be supplied as a string in the format "#ffffff".
+func GetColor(name string) Color {
+	if c, ok := ColorNames[name]; ok {
+		return c
+	}
+	if len(name) == 7 && name[0] == '#' {
+		if v, e := strconv.ParseInt(name[1:], 16, 32); e == nil {
+			return NewHexColor(int32(v))
+		}
+	}
+	return ColorDefault
+}
+
+// PaletteColor creates a color based on the palette index.
+func PaletteColor(index int) Color {
+	return Color(index) | ColorValid
+}
+
+// FromImageColor converts an image/color.Color into tcell.Color.
+// The alpha value is dropped, so it should be tracked separately if it is
+// needed.
+func FromImageColor(imageColor ic.Color) Color {
+	r, g, b, _ := imageColor.RGBA()
+	// NOTE image/color.Color RGB values range is [0, 0xFFFF] as uint32
+	return NewRGBColor(int32(r>>8), int32(g>>8), int32(b>>8))
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/colorfit.go b/vendor/github.com/gdamore/tcell/v2/colorfit.go
new file mode 100644
index 0000000..b7740b8
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/colorfit.go
@@ -0,0 +1,52 @@
+// Copyright 2016 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"github.com/lucasb-eyer/go-colorful"
+	"math"
+)
+
+// FindColor attempts to find a given color, or the best match possible for it,
+// from the palette given.  This is an expensive operation, so results should
+// be cached by the caller.
+func FindColor(c Color, palette []Color) Color {
+	match := ColorDefault
+	dist := float64(0)
+	r, g, b := c.RGB()
+	c1 := colorful.Color{
+		R: float64(r) / 255.0,
+		G: float64(g) / 255.0,
+		B: float64(b) / 255.0,
+	}
+	for _, d := range palette {
+		r, g, b = d.RGB()
+		c2 := colorful.Color{
+			R: float64(r) / 255.0,
+			G: float64(g) / 255.0,
+			B: float64(b) / 255.0,
+		}
+		// CIE94 is more accurate, but really really expensive.
+		nd := c1.DistanceCIE76(c2)
+		if math.IsNaN(nd) {
+			nd = math.Inf(1)
+		}
+		if match == ColorDefault || nd < dist {
+			match = d
+			dist = nd
+		}
+	}
+	return match
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/console_stub.go b/vendor/github.com/gdamore/tcell/v2/console_stub.go
new file mode 100644
index 0000000..fda2f09
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/console_stub.go
@@ -0,0 +1,23 @@
+// +build !windows
+
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+// NewConsoleScreen returns a console based screen.  This platform
+// doesn't have support for any, so it returns nil and a suitable error.
+func NewConsoleScreen() (Screen, error) {
+	return nil, ErrNoScreen
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/console_win.go b/vendor/github.com/gdamore/tcell/v2/console_win.go
new file mode 100644
index 0000000..a901a12
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/console_win.go
@@ -0,0 +1,1269 @@
+// +build windows
+
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+	"sync"
+	"syscall"
+	"unicode/utf16"
+	"unsafe"
+)
+
+type cScreen struct {
+	in         syscall.Handle
+	out        syscall.Handle
+	cancelflag syscall.Handle
+	scandone   chan struct{}
+	evch       chan Event
+	quit       chan struct{}
+	curx       int
+	cury       int
+	style      Style
+	clear      bool
+	fini       bool
+	vten       bool
+	truecolor  bool
+	running    bool
+
+	w int
+	h int
+
+	oscreen consoleInfo
+	ocursor cursorInfo
+	oimode  uint32
+	oomode  uint32
+	cells   CellBuffer
+
+	finiOnce sync.Once
+
+	mouseEnabled bool
+	wg           sync.WaitGroup
+	stopQ        chan struct{}
+
+	sync.Mutex
+}
+
+var winLock sync.Mutex
+
+var winPalette = []Color{
+	ColorBlack,
+	ColorMaroon,
+	ColorGreen,
+	ColorNavy,
+	ColorOlive,
+	ColorPurple,
+	ColorTeal,
+	ColorSilver,
+	ColorGray,
+	ColorRed,
+	ColorLime,
+	ColorBlue,
+	ColorYellow,
+	ColorFuchsia,
+	ColorAqua,
+	ColorWhite,
+}
+
+var winColors = map[Color]Color{
+	ColorBlack:   ColorBlack,
+	ColorMaroon:  ColorMaroon,
+	ColorGreen:   ColorGreen,
+	ColorNavy:    ColorNavy,
+	ColorOlive:   ColorOlive,
+	ColorPurple:  ColorPurple,
+	ColorTeal:    ColorTeal,
+	ColorSilver:  ColorSilver,
+	ColorGray:    ColorGray,
+	ColorRed:     ColorRed,
+	ColorLime:    ColorLime,
+	ColorBlue:    ColorBlue,
+	ColorYellow:  ColorYellow,
+	ColorFuchsia: ColorFuchsia,
+	ColorAqua:    ColorAqua,
+	ColorWhite:   ColorWhite,
+}
+
+var (
+	k32 = syscall.NewLazyDLL("kernel32.dll")
+	u32 = syscall.NewLazyDLL("user32.dll")
+)
+
+// We have to bring in the kernel32 and user32 DLLs directly, so we can get
+// access to some system calls that the core Go API lacks.
+//
+// Note that Windows appends some functions with W to indicate that wide
+// characters (Unicode) are in use.  The documentation refers to them
+// without this suffix, as the resolution is made via preprocessor.
+var (
+	procReadConsoleInput           = k32.NewProc("ReadConsoleInputW")
+	procWaitForMultipleObjects     = k32.NewProc("WaitForMultipleObjects")
+	procCreateEvent                = k32.NewProc("CreateEventW")
+	procSetEvent                   = k32.NewProc("SetEvent")
+	procGetConsoleCursorInfo       = k32.NewProc("GetConsoleCursorInfo")
+	procSetConsoleCursorInfo       = k32.NewProc("SetConsoleCursorInfo")
+	procSetConsoleCursorPosition   = k32.NewProc("SetConsoleCursorPosition")
+	procSetConsoleMode             = k32.NewProc("SetConsoleMode")
+	procGetConsoleMode             = k32.NewProc("GetConsoleMode")
+	procGetConsoleScreenBufferInfo = k32.NewProc("GetConsoleScreenBufferInfo")
+	procFillConsoleOutputAttribute = k32.NewProc("FillConsoleOutputAttribute")
+	procFillConsoleOutputCharacter = k32.NewProc("FillConsoleOutputCharacterW")
+	procSetConsoleWindowInfo       = k32.NewProc("SetConsoleWindowInfo")
+	procSetConsoleScreenBufferSize = k32.NewProc("SetConsoleScreenBufferSize")
+	procSetConsoleTextAttribute    = k32.NewProc("SetConsoleTextAttribute")
+	procMessageBeep                = u32.NewProc("MessageBeep")
+)
+
+const (
+	w32Infinite    = ^uintptr(0)
+	w32WaitObject0 = uintptr(0)
+)
+
+const (
+	// VT100/XTerm escapes understood by the console
+	vtShowCursor = "\x1b[?25h"
+	vtHideCursor = "\x1b[?25l"
+	vtCursorPos  = "\x1b[%d;%dH" // Note that it is Y then X
+	vtSgr0       = "\x1b[0m"
+	vtBold       = "\x1b[1m"
+	vtUnderline  = "\x1b[4m"
+	vtBlink      = "\x1b[5m" // Not sure this is processed
+	vtReverse    = "\x1b[7m"
+	vtSetFg      = "\x1b[38;5;%dm"
+	vtSetBg      = "\x1b[48;5;%dm"
+	vtSetFgRGB   = "\x1b[38;2;%d;%d;%dm" // RGB
+	vtSetBgRGB   = "\x1b[48;2;%d;%d;%dm" // RGB
+)
+
+// NewConsoleScreen returns a Screen for the Windows console associated
+// with the current process.  The Screen makes use of the Windows Console
+// API to display content and read events.
+func NewConsoleScreen() (Screen, error) {
+	return &cScreen{}, nil
+}
+
+func (s *cScreen) Init() error {
+	s.evch = make(chan Event, 10)
+	s.quit = make(chan struct{})
+	s.scandone = make(chan struct{})
+
+	in, e := syscall.Open("CONIN$", syscall.O_RDWR, 0)
+	if e != nil {
+		return e
+	}
+	s.in = in
+	out, e := syscall.Open("CONOUT$", syscall.O_RDWR, 0)
+	if e != nil {
+		syscall.Close(s.in)
+		return e
+	}
+	s.out = out
+
+	s.truecolor = true
+
+	// ConEmu handling of colors and scrolling when in terminal
+	// mode is extremely problematic at the best.  The color
+	// palette will scroll even though characters do not, when
+	// emitting stuff for the last character.  In the future we
+	// might change this to look at specific versions of ConEmu
+	// if they fix the bug.
+	if os.Getenv("ConEmuPID") != "" {
+		s.truecolor = false
+	}
+	switch os.Getenv("TCELL_TRUECOLOR") {
+	case "disable":
+		s.truecolor = false
+	case "enable":
+		s.truecolor = true
+	}
+
+	s.Lock()
+
+	s.curx = -1
+	s.cury = -1
+	s.style = StyleDefault
+	s.getCursorInfo(&s.ocursor)
+	s.getConsoleInfo(&s.oscreen)
+	s.getOutMode(&s.oomode)
+	s.getInMode(&s.oimode)
+	s.resize()
+
+	s.fini = false
+	s.setInMode(modeResizeEn | modeExtndFlg)
+
+	// 24-bit color is opt-in for now, because we can't figure out
+	// to make it work consistently.
+	if s.truecolor {
+		s.setOutMode(modeVtOutput | modeNoAutoNL | modeCookedOut)
+		var omode uint32
+		s.getOutMode(&omode)
+		if omode&modeVtOutput == modeVtOutput {
+			s.vten = true
+		} else {
+			s.truecolor = false
+			s.setOutMode(0)
+		}
+	} else {
+		s.setOutMode(0)
+	}
+
+	s.Unlock()
+
+	return s.engage()
+}
+
+func (s *cScreen) CharacterSet() string {
+	// We are always UTF-16LE on Windows
+	return "UTF-16LE"
+}
+
+func (s *cScreen) EnableMouse(...MouseFlags) {
+	s.Lock()
+	s.mouseEnabled = true
+	s.enableMouse(true)
+	s.Unlock()
+}
+
+func (s *cScreen) DisableMouse() {
+	s.Lock()
+	s.mouseEnabled = false
+	s.enableMouse(false)
+	s.Unlock()
+}
+
+func (s *cScreen) enableMouse(on bool) {
+	if on {
+		s.setInMode(modeResizeEn | modeMouseEn | modeExtndFlg)
+	} else {
+		s.setInMode(modeResizeEn | modeExtndFlg)
+	}
+}
+
+// Windows lacks bracketed paste (for now)
+
+func (s *cScreen) EnablePaste() {}
+
+func (s *cScreen) DisablePaste() {}
+
+func (s *cScreen) Fini() {
+	s.disengage()
+}
+
+func (s *cScreen) disengage() {
+	s.Lock()
+	if !s.running {
+		s.Unlock()
+		return
+	}
+	s.running = false
+	stopQ := s.stopQ
+	procSetEvent.Call(uintptr(s.cancelflag))
+	close(stopQ)
+	s.Unlock()
+
+	s.wg.Wait()
+
+	s.setInMode(s.oimode)
+	s.setOutMode(s.oomode)
+	s.setBufferSize(int(s.oscreen.size.x), int(s.oscreen.size.y))
+	s.clearScreen(StyleDefault, false)
+	s.setCursorPos(0, 0, false)
+	s.setCursorInfo(&s.ocursor)
+	procSetConsoleTextAttribute.Call(
+		uintptr(s.out),
+		uintptr(s.mapStyle(StyleDefault)))
+}
+
+func (s *cScreen) engage() error {
+	s.Lock()
+	defer s.Unlock()
+	if s.running {
+		return errors.New("already engaged")
+	}
+	s.stopQ = make(chan struct{})
+	cf, _, e := procCreateEvent.Call(
+		uintptr(0),
+		uintptr(1),
+		uintptr(0),
+		uintptr(0))
+	if cf == uintptr(0) {
+		return e
+	}
+	s.running = true
+	s.cancelflag = syscall.Handle(cf)
+	s.enableMouse(s.mouseEnabled)
+
+	if s.vten {
+		s.setOutMode(modeVtOutput | modeNoAutoNL | modeCookedOut)
+	} else {
+		s.setOutMode(0)
+	}
+
+	s.clearScreen(s.style, s.vten)
+	s.hideCursor()
+
+	s.cells.Invalidate()
+	s.hideCursor()
+	s.resize()
+	s.draw()
+	s.doCursor()
+
+	s.wg.Add(1)
+	go s.scanInput(s.stopQ)
+	return nil
+}
+
+func (s *cScreen) PostEventWait(ev Event) {
+	s.evch <- ev
+}
+
+func (s *cScreen) PostEvent(ev Event) error {
+	select {
+	case s.evch <- ev:
+		return nil
+	default:
+		return ErrEventQFull
+	}
+}
+
+func (s *cScreen) ChannelEvents(ch chan<- Event, quit <-chan struct{}) {
+	defer close(ch)
+	for {
+		select {
+		case <-quit:
+			return
+		case <-s.stopQ:
+			return
+		case ev := <-s.evch:
+			select {
+			case <-quit:
+				return
+			case <-s.stopQ:
+				return
+			case ch <- ev:
+			}
+		}
+	}
+}
+
+func (s *cScreen) PollEvent() Event {
+	select {
+	case <-s.stopQ:
+		return nil
+	case ev := <-s.evch:
+		return ev
+	}
+}
+
+func (s *cScreen) HasPendingEvent() bool {
+	return len(s.evch) > 0
+}
+
+type cursorInfo struct {
+	size    uint32
+	visible uint32
+}
+
+type coord struct {
+	x int16
+	y int16
+}
+
+func (c coord) uintptr() uintptr {
+	// little endian, put x first
+	return uintptr(c.x) | (uintptr(c.y) << 16)
+}
+
+type rect struct {
+	left   int16
+	top    int16
+	right  int16
+	bottom int16
+}
+
+func (s *cScreen) emitVtString(vs string) {
+	esc := utf16.Encode([]rune(vs))
+	syscall.WriteConsole(s.out, &esc[0], uint32(len(esc)), nil, nil)
+}
+
+func (s *cScreen) showCursor() {
+	if s.vten {
+		s.emitVtString(vtShowCursor)
+	} else {
+		s.setCursorInfo(&cursorInfo{size: 100, visible: 1})
+	}
+}
+
+func (s *cScreen) hideCursor() {
+	if s.vten {
+		s.emitVtString(vtHideCursor)
+	} else {
+		s.setCursorInfo(&cursorInfo{size: 1, visible: 0})
+	}
+}
+
+func (s *cScreen) ShowCursor(x, y int) {
+	s.Lock()
+	if !s.fini {
+		s.curx = x
+		s.cury = y
+	}
+	s.doCursor()
+	s.Unlock()
+}
+
+func (s *cScreen) doCursor() {
+	x, y := s.curx, s.cury
+
+	if x < 0 || y < 0 || x >= s.w || y >= s.h {
+		s.hideCursor()
+	} else {
+		s.setCursorPos(x, y, s.vten)
+		s.showCursor()
+	}
+}
+
+func (s *cScreen) HideCursor() {
+	s.ShowCursor(-1, -1)
+}
+
+type inputRecord struct {
+	typ  uint16
+	_    uint16
+	data [16]byte
+}
+
+const (
+	keyEvent    uint16 = 1
+	mouseEvent  uint16 = 2
+	resizeEvent uint16 = 4
+	menuEvent   uint16 = 8  // don't use
+	focusEvent  uint16 = 16 // don't use
+)
+
+type mouseRecord struct {
+	x     int16
+	y     int16
+	btns  uint32
+	mod   uint32
+	flags uint32
+}
+
+const (
+	mouseDoubleClick uint32 = 0x2
+	mouseHWheeled    uint32 = 0x8
+	mouseVWheeled    uint32 = 0x4
+	mouseMoved       uint32 = 0x1
+)
+
+type resizeRecord struct {
+	x int16
+	y int16
+}
+
+type keyRecord struct {
+	isdown int32
+	repeat uint16
+	kcode  uint16
+	scode  uint16
+	ch     uint16
+	mod    uint32
+}
+
+const (
+	// Constants per Microsoft.  We don't put the modifiers
+	// here.
+	vkCancel = 0x03
+	vkBack   = 0x08 // Backspace
+	vkTab    = 0x09
+	vkClear  = 0x0c
+	vkReturn = 0x0d
+	vkPause  = 0x13
+	vkEscape = 0x1b
+	vkSpace  = 0x20
+	vkPrior  = 0x21 // PgUp
+	vkNext   = 0x22 // PgDn
+	vkEnd    = 0x23
+	vkHome   = 0x24
+	vkLeft   = 0x25
+	vkUp     = 0x26
+	vkRight  = 0x27
+	vkDown   = 0x28
+	vkPrint  = 0x2a
+	vkPrtScr = 0x2c
+	vkInsert = 0x2d
+	vkDelete = 0x2e
+	vkHelp   = 0x2f
+	vkF1     = 0x70
+	vkF2     = 0x71
+	vkF3     = 0x72
+	vkF4     = 0x73
+	vkF5     = 0x74
+	vkF6     = 0x75
+	vkF7     = 0x76
+	vkF8     = 0x77
+	vkF9     = 0x78
+	vkF10    = 0x79
+	vkF11    = 0x7a
+	vkF12    = 0x7b
+	vkF13    = 0x7c
+	vkF14    = 0x7d
+	vkF15    = 0x7e
+	vkF16    = 0x7f
+	vkF17    = 0x80
+	vkF18    = 0x81
+	vkF19    = 0x82
+	vkF20    = 0x83
+	vkF21    = 0x84
+	vkF22    = 0x85
+	vkF23    = 0x86
+	vkF24    = 0x87
+)
+
+var vkKeys = map[uint16]Key{
+	vkCancel: KeyCancel,
+	vkBack:   KeyBackspace,
+	vkTab:    KeyTab,
+	vkClear:  KeyClear,
+	vkPause:  KeyPause,
+	vkPrint:  KeyPrint,
+	vkPrtScr: KeyPrint,
+	vkPrior:  KeyPgUp,
+	vkNext:   KeyPgDn,
+	vkReturn: KeyEnter,
+	vkEnd:    KeyEnd,
+	vkHome:   KeyHome,
+	vkLeft:   KeyLeft,
+	vkUp:     KeyUp,
+	vkRight:  KeyRight,
+	vkDown:   KeyDown,
+	vkInsert: KeyInsert,
+	vkDelete: KeyDelete,
+	vkHelp:   KeyHelp,
+	vkF1:     KeyF1,
+	vkF2:     KeyF2,
+	vkF3:     KeyF3,
+	vkF4:     KeyF4,
+	vkF5:     KeyF5,
+	vkF6:     KeyF6,
+	vkF7:     KeyF7,
+	vkF8:     KeyF8,
+	vkF9:     KeyF9,
+	vkF10:    KeyF10,
+	vkF11:    KeyF11,
+	vkF12:    KeyF12,
+	vkF13:    KeyF13,
+	vkF14:    KeyF14,
+	vkF15:    KeyF15,
+	vkF16:    KeyF16,
+	vkF17:    KeyF17,
+	vkF18:    KeyF18,
+	vkF19:    KeyF19,
+	vkF20:    KeyF20,
+	vkF21:    KeyF21,
+	vkF22:    KeyF22,
+	vkF23:    KeyF23,
+	vkF24:    KeyF24,
+}
+
+// NB: All Windows platforms are little endian.  We assume this
+// never, ever change.  The following code is endian safe. and does
+// not use unsafe pointers.
+func getu32(v []byte) uint32 {
+	return uint32(v[0]) + (uint32(v[1]) << 8) + (uint32(v[2]) << 16) + (uint32(v[3]) << 24)
+}
+func geti32(v []byte) int32 {
+	return int32(getu32(v))
+}
+func getu16(v []byte) uint16 {
+	return uint16(v[0]) + (uint16(v[1]) << 8)
+}
+func geti16(v []byte) int16 {
+	return int16(getu16(v))
+}
+
+// Convert windows dwControlKeyState to modifier mask
+func mod2mask(cks uint32) ModMask {
+	mm := ModNone
+	// Left or right control
+	if (cks & (0x0008 | 0x0004)) != 0 {
+		mm |= ModCtrl
+	}
+	// Left or right alt
+	if (cks & (0x0002 | 0x0001)) != 0 {
+		mm |= ModAlt
+	}
+	// Any shift
+	if (cks & 0x0010) != 0 {
+		mm |= ModShift
+	}
+	return mm
+}
+
+func mrec2btns(mbtns, flags uint32) ButtonMask {
+	btns := ButtonNone
+	if mbtns&0x1 != 0 {
+		btns |= Button1
+	}
+	if mbtns&0x2 != 0 {
+		btns |= Button2
+	}
+	if mbtns&0x4 != 0 {
+		btns |= Button3
+	}
+	if mbtns&0x8 != 0 {
+		btns |= Button4
+	}
+	if mbtns&0x10 != 0 {
+		btns |= Button5
+	}
+	if mbtns&0x20 != 0 {
+		btns |= Button6
+	}
+	if mbtns&0x40 != 0 {
+		btns |= Button7
+	}
+	if mbtns&0x80 != 0 {
+		btns |= Button8
+	}
+
+	if flags&mouseVWheeled != 0 {
+		if mbtns&0x80000000 == 0 {
+			btns |= WheelUp
+		} else {
+			btns |= WheelDown
+		}
+	}
+	if flags&mouseHWheeled != 0 {
+		if mbtns&0x80000000 == 0 {
+			btns |= WheelRight
+		} else {
+			btns |= WheelLeft
+		}
+	}
+	return btns
+}
+
+func (s *cScreen) getConsoleInput() error {
+	// cancelFlag comes first as WaitForMultipleObjects returns the lowest index
+	// in the event that both events are signalled.
+	waitObjects := []syscall.Handle{s.cancelflag, s.in}
+	// As arrays are contiguous in memory, a pointer to the first object is the
+	// same as a pointer to the array itself.
+	pWaitObjects := unsafe.Pointer(&waitObjects[0])
+
+	rv, _, er := procWaitForMultipleObjects.Call(
+		uintptr(len(waitObjects)),
+		uintptr(pWaitObjects),
+		uintptr(0),
+		w32Infinite)
+	// WaitForMultipleObjects returns WAIT_OBJECT_0 + the index.
+	switch rv {
+	case w32WaitObject0: // s.cancelFlag
+		return errors.New("cancelled")
+	case w32WaitObject0 + 1: // s.in
+		rec := &inputRecord{}
+		var nrec int32
+		rv, _, er := procReadConsoleInput.Call(
+			uintptr(s.in),
+			uintptr(unsafe.Pointer(rec)),
+			uintptr(1),
+			uintptr(unsafe.Pointer(&nrec)))
+		if rv == 0 {
+			return er
+		}
+		if nrec != 1 {
+			return nil
+		}
+		switch rec.typ {
+		case keyEvent:
+			krec := &keyRecord{}
+			krec.isdown = geti32(rec.data[0:])
+			krec.repeat = getu16(rec.data[4:])
+			krec.kcode = getu16(rec.data[6:])
+			krec.scode = getu16(rec.data[8:])
+			krec.ch = getu16(rec.data[10:])
+			krec.mod = getu32(rec.data[12:])
+
+			if krec.isdown == 0 || krec.repeat < 1 {
+				// its a key release event, ignore it
+				return nil
+			}
+			if krec.ch != 0 {
+				// synthesized key code
+				for krec.repeat > 0 {
+					// convert shift+tab to backtab
+					if mod2mask(krec.mod) == ModShift && krec.ch == vkTab {
+						s.PostEventWait(NewEventKey(KeyBacktab, 0,
+							ModNone))
+					} else {
+						s.PostEventWait(NewEventKey(KeyRune, rune(krec.ch),
+							mod2mask(krec.mod)))
+					}
+					krec.repeat--
+				}
+				return nil
+			}
+			key := KeyNUL // impossible on Windows
+			ok := false
+			if key, ok = vkKeys[krec.kcode]; !ok {
+				return nil
+			}
+			for krec.repeat > 0 {
+				s.PostEventWait(NewEventKey(key, rune(krec.ch),
+					mod2mask(krec.mod)))
+				krec.repeat--
+			}
+
+		case mouseEvent:
+			var mrec mouseRecord
+			mrec.x = geti16(rec.data[0:])
+			mrec.y = geti16(rec.data[2:])
+			mrec.btns = getu32(rec.data[4:])
+			mrec.mod = getu32(rec.data[8:])
+			mrec.flags = getu32(rec.data[12:])
+			btns := mrec2btns(mrec.btns, mrec.flags)
+			// we ignore double click, events are delivered normally
+			s.PostEventWait(NewEventMouse(int(mrec.x), int(mrec.y), btns,
+				mod2mask(mrec.mod)))
+
+		case resizeEvent:
+			var rrec resizeRecord
+			rrec.x = geti16(rec.data[0:])
+			rrec.y = geti16(rec.data[2:])
+			s.PostEventWait(NewEventResize(int(rrec.x), int(rrec.y)))
+
+		default:
+		}
+	default:
+		return er
+	}
+
+	return nil
+}
+
+func (s *cScreen) scanInput(stopQ chan struct{}) {
+	defer s.wg.Done()
+	for {
+		select {
+		case <-stopQ:
+			return
+		default:
+		}
+		if e := s.getConsoleInput(); e != nil {
+			return
+		}
+	}
+}
+
+// Windows console can display 8 characters, in either low or high intensity
+func (s *cScreen) Colors() int {
+	if s.vten {
+		return 1 << 24
+	}
+	return 16
+}
+
+var vgaColors = map[Color]uint16{
+	ColorBlack:   0,
+	ColorMaroon:  0x4,
+	ColorGreen:   0x2,
+	ColorNavy:    0x1,
+	ColorOlive:   0x6,
+	ColorPurple:  0x5,
+	ColorTeal:    0x3,
+	ColorSilver:  0x7,
+	ColorGrey:    0x8,
+	ColorRed:     0xc,
+	ColorLime:    0xa,
+	ColorBlue:    0x9,
+	ColorYellow:  0xe,
+	ColorFuchsia: 0xd,
+	ColorAqua:    0xb,
+	ColorWhite:   0xf,
+}
+
+// Windows uses RGB signals
+func mapColor2RGB(c Color) uint16 {
+	winLock.Lock()
+	if v, ok := winColors[c]; ok {
+		c = v
+	} else {
+		v = FindColor(c, winPalette)
+		winColors[c] = v
+		c = v
+	}
+	winLock.Unlock()
+
+	if vc, ok := vgaColors[c]; ok {
+		return vc
+	}
+	return 0
+}
+
+// Map a tcell style to Windows attributes
+func (s *cScreen) mapStyle(style Style) uint16 {
+	f, b, a := style.Decompose()
+	fa := s.oscreen.attrs & 0xf
+	ba := (s.oscreen.attrs) >> 4 & 0xf
+	if f != ColorDefault && f != ColorReset {
+		fa = mapColor2RGB(f)
+	}
+	if b != ColorDefault && b != ColorReset {
+		ba = mapColor2RGB(b)
+	}
+	var attr uint16
+	// We simulate reverse by doing the color swap ourselves.
+	// Apparently windows cannot really do this except in DBCS
+	// views.
+	if a&AttrReverse != 0 {
+		attr = ba
+		attr |= (fa << 4)
+	} else {
+		attr = fa
+		attr |= (ba << 4)
+	}
+	if a&AttrBold != 0 {
+		attr |= 0x8
+	}
+	if a&AttrDim != 0 {
+		attr &^= 0x8
+	}
+	if a&AttrUnderline != 0 {
+		// Best effort -- doesn't seem to work though.
+		attr |= 0x8000
+	}
+	// Blink is unsupported
+	return attr
+}
+
+func (s *cScreen) SetCell(x, y int, style Style, ch ...rune) {
+	if len(ch) > 0 {
+		s.SetContent(x, y, ch[0], ch[1:], style)
+	} else {
+		s.SetContent(x, y, ' ', nil, style)
+	}
+}
+
+func (s *cScreen) SetContent(x, y int, mainc rune, combc []rune, style Style) {
+	s.Lock()
+	if !s.fini {
+		s.cells.SetContent(x, y, mainc, combc, style)
+	}
+	s.Unlock()
+}
+
+func (s *cScreen) GetContent(x, y int) (rune, []rune, Style, int) {
+	s.Lock()
+	mainc, combc, style, width := s.cells.GetContent(x, y)
+	s.Unlock()
+	return mainc, combc, style, width
+}
+
+func (s *cScreen) sendVtStyle(style Style) {
+	esc := &strings.Builder{}
+
+	fg, bg, attrs := style.Decompose()
+
+	esc.WriteString(vtSgr0)
+
+	if attrs&(AttrBold|AttrDim) == AttrBold {
+		esc.WriteString(vtBold)
+	}
+	if attrs&AttrBlink != 0 {
+		esc.WriteString(vtBlink)
+	}
+	if attrs&AttrUnderline != 0 {
+		esc.WriteString(vtUnderline)
+	}
+	if attrs&AttrReverse != 0 {
+		esc.WriteString(vtReverse)
+	}
+	if fg.IsRGB() {
+		r, g, b := fg.RGB()
+		fmt.Fprintf(esc, vtSetFgRGB, r, g, b)
+	} else if fg.Valid() {
+		fmt.Fprintf(esc, vtSetFg, fg&0xff)
+	}
+	if bg.IsRGB() {
+		r, g, b := bg.RGB()
+		fmt.Fprintf(esc, vtSetBgRGB, r, g, b)
+	} else if bg.Valid() {
+		fmt.Fprintf(esc, vtSetBg, bg&0xff)
+	}
+	s.emitVtString(esc.String())
+}
+
+func (s *cScreen) writeString(x, y int, style Style, ch []uint16) {
+	// we assume the caller has hidden the cursor
+	if len(ch) == 0 {
+		return
+	}
+	s.setCursorPos(x, y, s.vten)
+
+	if s.vten {
+		s.sendVtStyle(style)
+	} else {
+		procSetConsoleTextAttribute.Call(
+			uintptr(s.out),
+			uintptr(s.mapStyle(style)))
+	}
+	syscall.WriteConsole(s.out, &ch[0], uint32(len(ch)), nil, nil)
+}
+
+func (s *cScreen) draw() {
+	// allocate a scratch line bit enough for no combining chars.
+	// if you have combining characters, you may pay for extra allocs.
+	if s.clear {
+		s.clearScreen(s.style, s.vten)
+		s.clear = false
+		s.cells.Invalidate()
+	}
+	buf := make([]uint16, 0, s.w)
+	wcs := buf[:]
+	lstyle := styleInvalid
+
+	lx, ly := -1, -1
+	ra := make([]rune, 1)
+
+	for y := 0; y < s.h; y++ {
+		for x := 0; x < s.w; x++ {
+			mainc, combc, style, width := s.cells.GetContent(x, y)
+			dirty := s.cells.Dirty(x, y)
+			if style == StyleDefault {
+				style = s.style
+			}
+
+			if !dirty || style != lstyle {
+				// write out any data queued thus far
+				// because we are going to skip over some
+				// cells, or because we need to change styles
+				s.writeString(lx, ly, lstyle, wcs)
+				wcs = buf[0:0]
+				lstyle = StyleDefault
+				if !dirty {
+					continue
+				}
+			}
+			if x > s.w-width {
+				mainc = ' '
+				combc = nil
+				width = 1
+			}
+			if len(wcs) == 0 {
+				lstyle = style
+				lx = x
+				ly = y
+			}
+			ra[0] = mainc
+			wcs = append(wcs, utf16.Encode(ra)...)
+			if len(combc) != 0 {
+				wcs = append(wcs, utf16.Encode(combc)...)
+			}
+			for dx := 0; dx < width; dx++ {
+				s.cells.SetDirty(x+dx, y, false)
+			}
+			x += width - 1
+		}
+		s.writeString(lx, ly, lstyle, wcs)
+		wcs = buf[0:0]
+		lstyle = styleInvalid
+	}
+}
+
+func (s *cScreen) Show() {
+	s.Lock()
+	if !s.fini {
+		s.hideCursor()
+		s.resize()
+		s.draw()
+		s.doCursor()
+	}
+	s.Unlock()
+}
+
+func (s *cScreen) Sync() {
+	s.Lock()
+	if !s.fini {
+		s.cells.Invalidate()
+		s.hideCursor()
+		s.resize()
+		s.draw()
+		s.doCursor()
+	}
+	s.Unlock()
+}
+
+type consoleInfo struct {
+	size  coord
+	pos   coord
+	attrs uint16
+	win   rect
+	maxsz coord
+}
+
+func (s *cScreen) getConsoleInfo(info *consoleInfo) {
+	procGetConsoleScreenBufferInfo.Call(
+		uintptr(s.out),
+		uintptr(unsafe.Pointer(info)))
+}
+
+func (s *cScreen) getCursorInfo(info *cursorInfo) {
+	procGetConsoleCursorInfo.Call(
+		uintptr(s.out),
+		uintptr(unsafe.Pointer(info)))
+}
+
+func (s *cScreen) setCursorInfo(info *cursorInfo) {
+	procSetConsoleCursorInfo.Call(
+		uintptr(s.out),
+		uintptr(unsafe.Pointer(info)))
+
+}
+
+func (s *cScreen) setCursorPos(x, y int, vtEnable bool) {
+	if vtEnable {
+		// Note that the string is Y first.  Origin is 1,1.
+		s.emitVtString(fmt.Sprintf(vtCursorPos, y+1, x+1))
+	} else {
+		procSetConsoleCursorPosition.Call(
+			uintptr(s.out),
+			coord{int16(x), int16(y)}.uintptr())
+	}
+}
+
+func (s *cScreen) setBufferSize(x, y int) {
+	procSetConsoleScreenBufferSize.Call(
+		uintptr(s.out),
+		coord{int16(x), int16(y)}.uintptr())
+}
+
+func (s *cScreen) Size() (int, int) {
+	s.Lock()
+	w, h := s.w, s.h
+	s.Unlock()
+
+	return w, h
+}
+
+func (s *cScreen) resize() {
+	info := consoleInfo{}
+	s.getConsoleInfo(&info)
+
+	w := int((info.win.right - info.win.left) + 1)
+	h := int((info.win.bottom - info.win.top) + 1)
+
+	if s.w == w && s.h == h {
+		return
+	}
+
+	s.cells.Resize(w, h)
+	s.w = w
+	s.h = h
+
+	s.setBufferSize(w, h)
+
+	r := rect{0, 0, int16(w - 1), int16(h - 1)}
+	procSetConsoleWindowInfo.Call(
+		uintptr(s.out),
+		uintptr(1),
+		uintptr(unsafe.Pointer(&r)))
+	s.PostEvent(NewEventResize(w, h))
+}
+
+func (s *cScreen) Clear() {
+	s.Fill(' ', s.style)
+}
+
+func (s *cScreen) Fill(r rune, style Style) {
+	s.Lock()
+	if !s.fini {
+		s.cells.Fill(r, style)
+		s.clear = true
+	}
+	s.Unlock()
+}
+
+func (s *cScreen) clearScreen(style Style, vtEnable bool) {
+	if vtEnable {
+		s.sendVtStyle(style)
+		row := strings.Repeat(" ", s.w)
+		for y := 0; y < s.h; y++ {
+			s.setCursorPos(0, y, vtEnable)
+			s.emitVtString(row)
+		}
+		s.setCursorPos(0, 0, vtEnable)
+
+	} else {
+		pos := coord{0, 0}
+		attr := s.mapStyle(style)
+		x, y := s.w, s.h
+		scratch := uint32(0)
+		count := uint32(x * y)
+
+		procFillConsoleOutputAttribute.Call(
+			uintptr(s.out),
+			uintptr(attr),
+			uintptr(count),
+			pos.uintptr(),
+			uintptr(unsafe.Pointer(&scratch)))
+		procFillConsoleOutputCharacter.Call(
+			uintptr(s.out),
+			uintptr(' '),
+			uintptr(count),
+			pos.uintptr(),
+			uintptr(unsafe.Pointer(&scratch)))
+	}
+}
+
+const (
+	// Input modes
+	modeExtndFlg uint32 = 0x0080
+	modeMouseEn         = 0x0010
+	modeResizeEn        = 0x0008
+	modeCooked          = 0x0001
+	modeVtInput         = 0x0200
+
+	// Output modes
+	modeCookedOut uint32 = 0x0001
+	modeWrapEOL          = 0x0002
+	modeVtOutput         = 0x0004
+	modeNoAutoNL         = 0x0008
+)
+
+func (s *cScreen) setInMode(mode uint32) error {
+	rv, _, err := procSetConsoleMode.Call(
+		uintptr(s.in),
+		uintptr(mode))
+	if rv == 0 {
+		return err
+	}
+	return nil
+}
+
+func (s *cScreen) setOutMode(mode uint32) error {
+	rv, _, err := procSetConsoleMode.Call(
+		uintptr(s.out),
+		uintptr(mode))
+	if rv == 0 {
+		return err
+	}
+	return nil
+}
+
+func (s *cScreen) getInMode(v *uint32) {
+	procGetConsoleMode.Call(
+		uintptr(s.in),
+		uintptr(unsafe.Pointer(v)))
+}
+
+func (s *cScreen) getOutMode(v *uint32) {
+	procGetConsoleMode.Call(
+		uintptr(s.out),
+		uintptr(unsafe.Pointer(v)))
+}
+
+func (s *cScreen) SetStyle(style Style) {
+	s.Lock()
+	s.style = style
+	s.Unlock()
+}
+
+// No fallback rune support, since we have Unicode.  Yay!
+
+func (s *cScreen) RegisterRuneFallback(r rune, subst string) {
+}
+
+func (s *cScreen) UnregisterRuneFallback(r rune) {
+}
+
+func (s *cScreen) CanDisplay(r rune, checkFallbacks bool) bool {
+	// We presume we can display anything -- we're Unicode.
+	// (Sadly this not precisely true.  Combinings are especially
+	// poorly supported under Windows.)
+	return true
+}
+
+func (s *cScreen) HasMouse() bool {
+	return true
+}
+
+func (s *cScreen) Resize(int, int, int, int) {}
+
+func (s *cScreen) HasKey(k Key) bool {
+	// Microsoft has codes for some keys, but they are unusual,
+	// so we don't include them.  We include all the typical
+	// 101, 105 key layout keys.
+	valid := map[Key]bool{
+		KeyBackspace: true,
+		KeyTab:       true,
+		KeyEscape:    true,
+		KeyPause:     true,
+		KeyPrint:     true,
+		KeyPgUp:      true,
+		KeyPgDn:      true,
+		KeyEnter:     true,
+		KeyEnd:       true,
+		KeyHome:      true,
+		KeyLeft:      true,
+		KeyUp:        true,
+		KeyRight:     true,
+		KeyDown:      true,
+		KeyInsert:    true,
+		KeyDelete:    true,
+		KeyF1:        true,
+		KeyF2:        true,
+		KeyF3:        true,
+		KeyF4:        true,
+		KeyF5:        true,
+		KeyF6:        true,
+		KeyF7:        true,
+		KeyF8:        true,
+		KeyF9:        true,
+		KeyF10:       true,
+		KeyF11:       true,
+		KeyF12:       true,
+		KeyRune:      true,
+	}
+
+	return valid[k]
+}
+
+func (s *cScreen) Beep() error {
+	// A simple beep. If the sound card is not available, the sound is generated
+	// using the speaker.
+	//
+	// Reference:
+	// https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-messagebeep
+	const simpleBeep = 0xffffffff
+	if rv, _, err := procMessageBeep.Call(simpleBeep); rv == 0 {
+		return err
+	}
+	return nil
+}
+
+func (s *cScreen) Suspend() error {
+	s.disengage()
+	return nil
+}
+
+func (s *cScreen) Resume() error {
+	return s.engage()
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/doc.go b/vendor/github.com/gdamore/tcell/v2/doc.go
new file mode 100644
index 0000000..b671961
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/doc.go
@@ -0,0 +1,48 @@
+// Copyright 2018 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package tcell provides a lower-level, portable API for building
+// programs that interact with terminals or consoles.  It works with
+// both common (and many uncommon!) terminals or terminal emulators,
+// and Windows console implementations.
+//
+// It provides support for up to 256 colors, text attributes, and box drawing
+// elements.  A database of terminals built from a real terminfo database
+// is provided, along with code to generate new database entries.
+//
+// Tcell offers very rich support for mice, dependent upon the terminal
+// of course.  (Windows, XTerm, and iTerm 2 are known to work very well.)
+//
+// If the environment is not Unicode by default, such as an ISO8859 based
+// locale or GB18030, Tcell can convert input and output, so that your
+// terminal can operate in whatever locale is most convenient, while the
+// application program can just assume "everything is UTF-8".  Reasonable
+// defaults are used for updating characters to something suitable for
+// display.  Unicode box drawing characters will be converted to use the
+// alternate character set of your terminal, if native conversions are
+// not available.  If no ACS is available, then some ASCII fallbacks will
+// be used.
+//
+// Note that support for non-UTF-8 locales (other than C)  must be enabled
+// by the application using RegisterEncoding() -- we don't have them all
+// enabled by default to avoid bloating the application unneccessarily.
+// (These days UTF-8 is good enough for almost everyone, and nobody should
+// be using legacy locales anymore.)  Also, actual glyphs for various code
+// point will only be displayed if your terminal or emulator (or the font
+// the emulator is using) supports them.
+//
+// A rich set of keycodes is supported, with support for up to 65 function
+// keys, and various other special keys.
+//
+package tcell
diff --git a/vendor/github.com/gdamore/tcell/v2/encoding.go b/vendor/github.com/gdamore/tcell/v2/encoding.go
new file mode 100644
index 0000000..596a6e8
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/encoding.go
@@ -0,0 +1,139 @@
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"strings"
+	"sync"
+
+	"golang.org/x/text/encoding"
+
+	gencoding "github.com/gdamore/encoding"
+)
+
+var encodings map[string]encoding.Encoding
+var encodingLk sync.Mutex
+var encodingFallback EncodingFallback = EncodingFallbackFail
+
+// RegisterEncoding may be called by the application to register an encoding.
+// The presence of additional encodings will facilitate application usage with
+// terminal environments where the I/O subsystem does not support Unicode.
+//
+// Windows systems use Unicode natively, and do not need any of the encoding
+// subsystem when using Windows Console screens.
+//
+// Please see the Go documentation for golang.org/x/text/encoding -- most of
+// the common ones exist already as stock variables.  For example, ISO8859-15
+// can be registered using the following code:
+//
+//   import "golang.org/x/text/encoding/charmap"
+//
+//     ...
+//     RegisterEncoding("ISO8859-15", charmap.ISO8859_15)
+//
+// Aliases can be registered as well, for example "8859-15" could be an alias
+// for "ISO8859-15".
+//
+// For POSIX systems, the tcell package will check the environment variables
+// LC_ALL, LC_CTYPE,  and LANG (in that order) to determine the character set.
+// These are expected to have the following pattern:
+//
+//	 $language[.$codeset[@$variant]
+//
+// We extract only the $codeset part, which will usually be something like
+// UTF-8 or ISO8859-15 or KOI8-R.  Note that if the locale is either "POSIX"
+// or "C", then we assume US-ASCII (the POSIX 'portable character set'
+// and assume all other characters are somehow invalid.)
+//
+// Modern POSIX systems and terminal emulators may use UTF-8, and for those
+// systems, this API is also unnecessary.  For example, Darwin (MacOS X) and
+// modern Linux running modern xterm generally will out of the box without
+// any of this.  Use of UTF-8 is recommended when possible, as it saves
+// quite a lot processing overhead.
+//
+// Note that some encodings are quite large (for example GB18030 which is a
+// superset of Unicode) and so the application size can be expected ot
+// increase quite a bit as each encoding is added.  The East Asian encodings
+// have been seen to add 100-200K per encoding to the application size.
+//
+func RegisterEncoding(charset string, enc encoding.Encoding) {
+	encodingLk.Lock()
+	charset = strings.ToLower(charset)
+	encodings[charset] = enc
+	encodingLk.Unlock()
+}
+
+// EncodingFallback describes how the system behavees when the locale
+// requires a character set that we do not support.  The system always
+// supports UTF-8 and US-ASCII. On Windows consoles, UTF-16LE is also
+// supported automatically.  Other character sets must be added using the
+// RegisterEncoding API.  (A large group of nearly all of them can be
+// added using the RegisterAll function in the encoding sub package.)
+type EncodingFallback int
+
+const (
+	// EncodingFallbackFail behavior causes GetEncoding to fail
+	// when it cannot find an encoding.
+	EncodingFallbackFail = iota
+
+	// EncodingFallbackASCII behaviore causes GetEncoding to fall back
+	// to a 7-bit ASCII encoding, if no other encoding can be found.
+	EncodingFallbackASCII
+
+	// EncodingFallbackUTF8 behavior causes GetEncoding to assume
+	// UTF8 can pass unmodified upon failure.  Note that this behavior
+	// is not recommended, unless you are sure your terminal can cope
+	// with real UTF8 sequences.
+	EncodingFallbackUTF8
+)
+
+// SetEncodingFallback changes the behavior of GetEncoding when a suitable
+// encoding is not found.  The default is EncodingFallbackFail, which
+// causes GetEncoding to simply return nil.
+func SetEncodingFallback(fb EncodingFallback) {
+	encodingLk.Lock()
+	encodingFallback = fb
+	encodingLk.Unlock()
+}
+
+// GetEncoding is used by Screen implementors who want to locate an encoding
+// for the given character set name.  Note that this will return nil for
+// either the Unicode (UTF-8) or ASCII encodings, since we don't use
+// encodings for them but instead have our own native methods.
+func GetEncoding(charset string) encoding.Encoding {
+	charset = strings.ToLower(charset)
+	encodingLk.Lock()
+	defer encodingLk.Unlock()
+	if enc, ok := encodings[charset]; ok {
+		return enc
+	}
+	switch encodingFallback {
+	case EncodingFallbackASCII:
+		return gencoding.ASCII
+	case EncodingFallbackUTF8:
+		return encoding.Nop
+	}
+	return nil
+}
+
+func init() {
+	// We always support UTF-8 and ASCII.
+	encodings = make(map[string]encoding.Encoding)
+	encodings["utf-8"] = gencoding.UTF8
+	encodings["utf8"] = gencoding.UTF8
+	encodings["us-ascii"] = gencoding.ASCII
+	encodings["ascii"] = gencoding.ASCII
+	encodings["iso646"] = gencoding.ASCII
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/errors.go b/vendor/github.com/gdamore/tcell/v2/errors.go
new file mode 100644
index 0000000..201dff9
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/errors.go
@@ -0,0 +1,73 @@
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"errors"
+	"time"
+
+	"github.com/gdamore/tcell/v2/terminfo"
+)
+
+var (
+	// ErrTermNotFound indicates that a suitable terminal entry could
+	// not be found.  This can result from either not having TERM set,
+	// or from the TERM failing to support certain minimal functionality,
+	// in particular absolute cursor addressability (the cup capability)
+	// is required.  For example, legacy "adm3" lacks this capability,
+	// whereas the slightly newer "adm3a" supports it.  This failure
+	// occurs most often with "dumb".
+	ErrTermNotFound = terminfo.ErrTermNotFound
+
+	// ErrNoScreen indicates that no suitable screen could be found.
+	// This may result from attempting to run on a platform where there
+	// is no support for either termios or console I/O (such as nacl),
+	// or from running in an environment where there is no access to
+	// a suitable console/terminal device.  (For example, running on
+	// without a controlling TTY or with no /dev/tty on POSIX platforms.)
+	ErrNoScreen = errors.New("no suitable screen available")
+
+	// ErrNoCharset indicates that the locale environment the
+	// program is not supported by the program, because no suitable
+	// encoding was found for it.  This problem never occurs if
+	// the environment is UTF-8 or UTF-16.
+	ErrNoCharset = errors.New("character set not supported")
+
+	// ErrEventQFull indicates that the event queue is full, and
+	// cannot accept more events.
+	ErrEventQFull = errors.New("event queue full")
+)
+
+// An EventError is an event representing some sort of error, and carries
+// an error payload.
+type EventError struct {
+	t   time.Time
+	err error
+}
+
+// When returns the time when the event was created.
+func (ev *EventError) When() time.Time {
+	return ev.t
+}
+
+// Error implements the error.
+func (ev *EventError) Error() string {
+	return ev.err.Error()
+}
+
+// NewEventError creates an ErrorEvent with the given error payload.
+func NewEventError(err error) *EventError {
+	return &EventError{t: time.Now(), err: err}
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/event.go b/vendor/github.com/gdamore/tcell/v2/event.go
new file mode 100644
index 0000000..a3b7700
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/event.go
@@ -0,0 +1,53 @@
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"time"
+)
+
+// Event is a generic interface used for passing around Events.
+// Concrete types follow.
+type Event interface {
+	// When reports the time when the event was generated.
+	When() time.Time
+}
+
+// EventTime is a simple base event class, suitable for easy reuse.
+// It can be used to deliver actual timer events as well.
+type EventTime struct {
+	when time.Time
+}
+
+// When returns the time stamp when the event occurred.
+func (e *EventTime) When() time.Time {
+	return e.when
+}
+
+// SetEventTime sets the time of occurrence for the event.
+func (e *EventTime) SetEventTime(t time.Time) {
+	e.when = t
+}
+
+// SetEventNow sets the time of occurrence for the event to the current time.
+func (e *EventTime) SetEventNow() {
+	e.SetEventTime(time.Now())
+}
+
+// EventHandler is anything that handles events.  If the handler has
+// consumed the event, it should return true.  False otherwise.
+type EventHandler interface {
+	HandleEvent(Event) bool
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/interrupt.go b/vendor/github.com/gdamore/tcell/v2/interrupt.go
new file mode 100644
index 0000000..70dddfc
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/interrupt.go
@@ -0,0 +1,41 @@
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"time"
+)
+
+// EventInterrupt is a generic wakeup event.  Its can be used to
+// to request a redraw.  It can carry an arbitrary payload, as well.
+type EventInterrupt struct {
+	t time.Time
+	v interface{}
+}
+
+// When returns the time when this event was created.
+func (ev *EventInterrupt) When() time.Time {
+	return ev.t
+}
+
+// Data is used to obtain the opaque event payload.
+func (ev *EventInterrupt) Data() interface{} {
+	return ev.v
+}
+
+// NewEventInterrupt creates an EventInterrupt with the given payload.
+func NewEventInterrupt(data interface{}) *EventInterrupt {
+	return &EventInterrupt{t: time.Now(), v: data}
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/key.go b/vendor/github.com/gdamore/tcell/v2/key.go
new file mode 100644
index 0000000..9741e69
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/key.go
@@ -0,0 +1,470 @@
+// Copyright 2016 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// EventKey represents a key press.  Usually this is a key press followed
+// by a key release, but since terminal programs don't have a way to report
+// key release events, we usually get just one event.  If a key is held down
+// then the terminal may synthesize repeated key presses at some predefined
+// rate.  We have no control over that, nor visibility into it.
+//
+// In some cases, we can have a modifier key, such as ModAlt, that can be
+// generated with a key press.  (This usually is represented by having the
+// high bit set, or in some cases, by sending an ESC prior to the rune.)
+//
+// If the value of Key() is KeyRune, then the actual key value will be
+// available with the Rune() method.  This will be the case for most keys.
+// In most situations, the modifiers will not be set.  For example, if the
+// rune is 'A', this will be reported without the ModShift bit set, since
+// really can't tell if the Shift key was pressed (it might have been CAPSLOCK,
+// or a terminal that only can send capitals, or keyboard with separate
+// capital letters from lower case letters).
+//
+// Generally, terminal applications have far less visibility into keyboard
+// activity than graphical applications.  Hence, they should avoid depending
+// overly much on availability of modifiers, or the availability of any
+// specific keys.
+type EventKey struct {
+	t   time.Time
+	mod ModMask
+	key Key
+	ch  rune
+}
+
+// When returns the time when this Event was created, which should closely
+// match the time when the key was pressed.
+func (ev *EventKey) When() time.Time {
+	return ev.t
+}
+
+// Rune returns the rune corresponding to the key press, if it makes sense.
+// The result is only defined if the value of Key() is KeyRune.
+func (ev *EventKey) Rune() rune {
+	return ev.ch
+}
+
+// Key returns a virtual key code.  We use this to identify specific key
+// codes, such as KeyEnter, etc.  Most control and function keys are reported
+// with unique Key values.  Normal alphanumeric and punctuation keys will
+// generally return KeyRune here; the specific key can be further decoded
+// using the Rune() function.
+func (ev *EventKey) Key() Key {
+	return ev.key
+}
+
+// Modifiers returns the modifiers that were present with the key press.  Note
+// that not all platforms and terminals support this equally well, and some
+// cases we will not not know for sure.  Hence, applications should avoid
+// using this in most circumstances.
+func (ev *EventKey) Modifiers() ModMask {
+	return ev.mod
+}
+
+// KeyNames holds the written names of special keys. Useful to echo back a key
+// name, or to look up a key from a string value.
+var KeyNames = map[Key]string{
+	KeyEnter:          "Enter",
+	KeyBackspace:      "Backspace",
+	KeyTab:            "Tab",
+	KeyBacktab:        "Backtab",
+	KeyEsc:            "Esc",
+	KeyBackspace2:     "Backspace2",
+	KeyDelete:         "Delete",
+	KeyInsert:         "Insert",
+	KeyUp:             "Up",
+	KeyDown:           "Down",
+	KeyLeft:           "Left",
+	KeyRight:          "Right",
+	KeyHome:           "Home",
+	KeyEnd:            "End",
+	KeyUpLeft:         "UpLeft",
+	KeyUpRight:        "UpRight",
+	KeyDownLeft:       "DownLeft",
+	KeyDownRight:      "DownRight",
+	KeyCenter:         "Center",
+	KeyPgDn:           "PgDn",
+	KeyPgUp:           "PgUp",
+	KeyClear:          "Clear",
+	KeyExit:           "Exit",
+	KeyCancel:         "Cancel",
+	KeyPause:          "Pause",
+	KeyPrint:          "Print",
+	KeyF1:             "F1",
+	KeyF2:             "F2",
+	KeyF3:             "F3",
+	KeyF4:             "F4",
+	KeyF5:             "F5",
+	KeyF6:             "F6",
+	KeyF7:             "F7",
+	KeyF8:             "F8",
+	KeyF9:             "F9",
+	KeyF10:            "F10",
+	KeyF11:            "F11",
+	KeyF12:            "F12",
+	KeyF13:            "F13",
+	KeyF14:            "F14",
+	KeyF15:            "F15",
+	KeyF16:            "F16",
+	KeyF17:            "F17",
+	KeyF18:            "F18",
+	KeyF19:            "F19",
+	KeyF20:            "F20",
+	KeyF21:            "F21",
+	KeyF22:            "F22",
+	KeyF23:            "F23",
+	KeyF24:            "F24",
+	KeyF25:            "F25",
+	KeyF26:            "F26",
+	KeyF27:            "F27",
+	KeyF28:            "F28",
+	KeyF29:            "F29",
+	KeyF30:            "F30",
+	KeyF31:            "F31",
+	KeyF32:            "F32",
+	KeyF33:            "F33",
+	KeyF34:            "F34",
+	KeyF35:            "F35",
+	KeyF36:            "F36",
+	KeyF37:            "F37",
+	KeyF38:            "F38",
+	KeyF39:            "F39",
+	KeyF40:            "F40",
+	KeyF41:            "F41",
+	KeyF42:            "F42",
+	KeyF43:            "F43",
+	KeyF44:            "F44",
+	KeyF45:            "F45",
+	KeyF46:            "F46",
+	KeyF47:            "F47",
+	KeyF48:            "F48",
+	KeyF49:            "F49",
+	KeyF50:            "F50",
+	KeyF51:            "F51",
+	KeyF52:            "F52",
+	KeyF53:            "F53",
+	KeyF54:            "F54",
+	KeyF55:            "F55",
+	KeyF56:            "F56",
+	KeyF57:            "F57",
+	KeyF58:            "F58",
+	KeyF59:            "F59",
+	KeyF60:            "F60",
+	KeyF61:            "F61",
+	KeyF62:            "F62",
+	KeyF63:            "F63",
+	KeyF64:            "F64",
+	KeyCtrlA:          "Ctrl-A",
+	KeyCtrlB:          "Ctrl-B",
+	KeyCtrlC:          "Ctrl-C",
+	KeyCtrlD:          "Ctrl-D",
+	KeyCtrlE:          "Ctrl-E",
+	KeyCtrlF:          "Ctrl-F",
+	KeyCtrlG:          "Ctrl-G",
+	KeyCtrlJ:          "Ctrl-J",
+	KeyCtrlK:          "Ctrl-K",
+	KeyCtrlL:          "Ctrl-L",
+	KeyCtrlN:          "Ctrl-N",
+	KeyCtrlO:          "Ctrl-O",
+	KeyCtrlP:          "Ctrl-P",
+	KeyCtrlQ:          "Ctrl-Q",
+	KeyCtrlR:          "Ctrl-R",
+	KeyCtrlS:          "Ctrl-S",
+	KeyCtrlT:          "Ctrl-T",
+	KeyCtrlU:          "Ctrl-U",
+	KeyCtrlV:          "Ctrl-V",
+	KeyCtrlW:          "Ctrl-W",
+	KeyCtrlX:          "Ctrl-X",
+	KeyCtrlY:          "Ctrl-Y",
+	KeyCtrlZ:          "Ctrl-Z",
+	KeyCtrlSpace:      "Ctrl-Space",
+	KeyCtrlUnderscore: "Ctrl-_",
+	KeyCtrlRightSq:    "Ctrl-]",
+	KeyCtrlBackslash:  "Ctrl-\\",
+	KeyCtrlCarat:      "Ctrl-^",
+}
+
+// Name returns a printable value or the key stroke.  This can be used
+// when printing the event, for example.
+func (ev *EventKey) Name() string {
+	s := ""
+	m := []string{}
+	if ev.mod&ModShift != 0 {
+		m = append(m, "Shift")
+	}
+	if ev.mod&ModAlt != 0 {
+		m = append(m, "Alt")
+	}
+	if ev.mod&ModMeta != 0 {
+		m = append(m, "Meta")
+	}
+	if ev.mod&ModCtrl != 0 {
+		m = append(m, "Ctrl")
+	}
+
+	ok := false
+	if s, ok = KeyNames[ev.key]; !ok {
+		if ev.key == KeyRune {
+			s = "Rune[" + string(ev.ch) + "]"
+		} else {
+			s = fmt.Sprintf("Key[%d,%d]", ev.key, int(ev.ch))
+		}
+	}
+	if len(m) != 0 {
+		if ev.mod&ModCtrl != 0 && strings.HasPrefix(s, "Ctrl-") {
+			s = s[5:]
+		}
+		return fmt.Sprintf("%s+%s", strings.Join(m, "+"), s)
+	}
+	return s
+}
+
+// NewEventKey attempts to create a suitable event.  It parses the various
+// ASCII control sequences if KeyRune is passed for Key, but if the caller
+// has more precise information it should set that specifically.  Callers
+// that aren't sure about modifier state (most) should just pass ModNone.
+func NewEventKey(k Key, ch rune, mod ModMask) *EventKey {
+	if k == KeyRune && (ch < ' ' || ch == 0x7f) {
+		// Turn specials into proper key codes.  This is for
+		// control characters and the DEL.
+		k = Key(ch)
+		if mod == ModNone && ch < ' ' {
+			switch Key(ch) {
+			case KeyBackspace, KeyTab, KeyEsc, KeyEnter:
+				// these keys are directly typeable without CTRL
+			default:
+				// most likely entered with a CTRL keypress
+				mod = ModCtrl
+			}
+		}
+	}
+	return &EventKey{t: time.Now(), key: k, ch: ch, mod: mod}
+}
+
+// ModMask is a mask of modifier keys.  Note that it will not always be
+// possible to report modifier keys.
+type ModMask int16
+
+// These are the modifiers keys that can be sent either with a key press,
+// or a mouse event.  Note that as of now, due to the confusion associated
+// with Meta, and the lack of support for it on many/most platforms, the
+// current implementations never use it.  Instead, they use ModAlt, even for
+// events that could possibly have been distinguished from ModAlt.
+const (
+	ModShift ModMask = 1 << iota
+	ModCtrl
+	ModAlt
+	ModMeta
+	ModNone ModMask = 0
+)
+
+// Key is a generic value for representing keys, and especially special
+// keys (function keys, cursor movement keys, etc.)  For normal keys, like
+// ASCII letters, we use KeyRune, and then expect the application to
+// inspect the Rune() member of the EventKey.
+type Key int16
+
+// This is the list of named keys.  KeyRune is special however, in that it is
+// a place holder key indicating that a printable character was sent.  The
+// actual value of the rune will be transported in the Rune of the associated
+// EventKey.
+const (
+	KeyRune Key = iota + 256
+	KeyUp
+	KeyDown
+	KeyRight
+	KeyLeft
+	KeyUpLeft
+	KeyUpRight
+	KeyDownLeft
+	KeyDownRight
+	KeyCenter
+	KeyPgUp
+	KeyPgDn
+	KeyHome
+	KeyEnd
+	KeyInsert
+	KeyDelete
+	KeyHelp
+	KeyExit
+	KeyClear
+	KeyCancel
+	KeyPrint
+	KeyPause
+	KeyBacktab
+	KeyF1
+	KeyF2
+	KeyF3
+	KeyF4
+	KeyF5
+	KeyF6
+	KeyF7
+	KeyF8
+	KeyF9
+	KeyF10
+	KeyF11
+	KeyF12
+	KeyF13
+	KeyF14
+	KeyF15
+	KeyF16
+	KeyF17
+	KeyF18
+	KeyF19
+	KeyF20
+	KeyF21
+	KeyF22
+	KeyF23
+	KeyF24
+	KeyF25
+	KeyF26
+	KeyF27
+	KeyF28
+	KeyF29
+	KeyF30
+	KeyF31
+	KeyF32
+	KeyF33
+	KeyF34
+	KeyF35
+	KeyF36
+	KeyF37
+	KeyF38
+	KeyF39
+	KeyF40
+	KeyF41
+	KeyF42
+	KeyF43
+	KeyF44
+	KeyF45
+	KeyF46
+	KeyF47
+	KeyF48
+	KeyF49
+	KeyF50
+	KeyF51
+	KeyF52
+	KeyF53
+	KeyF54
+	KeyF55
+	KeyF56
+	KeyF57
+	KeyF58
+	KeyF59
+	KeyF60
+	KeyF61
+	KeyF62
+	KeyF63
+	KeyF64
+)
+
+const (
+	// These key codes are used internally, and will never appear to applications.
+	keyPasteStart Key = iota + 16384
+	keyPasteEnd
+)
+
+// These are the control keys.  Note that they overlap with other keys,
+// perhaps.  For example, KeyCtrlH is the same as KeyBackspace.
+const (
+	KeyCtrlSpace Key = iota
+	KeyCtrlA
+	KeyCtrlB
+	KeyCtrlC
+	KeyCtrlD
+	KeyCtrlE
+	KeyCtrlF
+	KeyCtrlG
+	KeyCtrlH
+	KeyCtrlI
+	KeyCtrlJ
+	KeyCtrlK
+	KeyCtrlL
+	KeyCtrlM
+	KeyCtrlN
+	KeyCtrlO
+	KeyCtrlP
+	KeyCtrlQ
+	KeyCtrlR
+	KeyCtrlS
+	KeyCtrlT
+	KeyCtrlU
+	KeyCtrlV
+	KeyCtrlW
+	KeyCtrlX
+	KeyCtrlY
+	KeyCtrlZ
+	KeyCtrlLeftSq // Escape
+	KeyCtrlBackslash
+	KeyCtrlRightSq
+	KeyCtrlCarat
+	KeyCtrlUnderscore
+)
+
+// Special values - these are fixed in an attempt to make it more likely
+// that aliases will encode the same way.
+
+// These are the defined ASCII values for key codes.  They generally match
+// with KeyCtrl values.
+const (
+	KeyNUL Key = iota
+	KeySOH
+	KeySTX
+	KeyETX
+	KeyEOT
+	KeyENQ
+	KeyACK
+	KeyBEL
+	KeyBS
+	KeyTAB
+	KeyLF
+	KeyVT
+	KeyFF
+	KeyCR
+	KeySO
+	KeySI
+	KeyDLE
+	KeyDC1
+	KeyDC2
+	KeyDC3
+	KeyDC4
+	KeyNAK
+	KeySYN
+	KeyETB
+	KeyCAN
+	KeyEM
+	KeySUB
+	KeyESC
+	KeyFS
+	KeyGS
+	KeyRS
+	KeyUS
+	KeyDEL Key = 0x7F
+)
+
+// These keys are aliases for other names.
+const (
+	KeyBackspace  = KeyBS
+	KeyTab        = KeyTAB
+	KeyEsc        = KeyESC
+	KeyEscape     = KeyESC
+	KeyEnter      = KeyCR
+	KeyBackspace2 = KeyDEL
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/mouse.go b/vendor/github.com/gdamore/tcell/v2/mouse.go
new file mode 100644
index 0000000..008c2e2
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/mouse.go
@@ -0,0 +1,103 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"time"
+)
+
+// EventMouse is a mouse event.  It is sent on either mouse up or mouse down
+// events.  It is also sent on mouse motion events - if the terminal supports
+// it.  We make every effort to ensure that mouse release events are delivered.
+// Hence, click drag can be identified by a motion event with the mouse down,
+// without any intervening button release.  On some terminals only the initiating
+// press and terminating release event will be delivered.
+//
+// Mouse wheel events, when reported, may appear on their own as individual
+// impulses; that is, there will normally not be a release event delivered
+// for mouse wheel movements.
+//
+// Most terminals cannot report the state of more than one button at a time --
+// and some cannot report motion events unless a button is pressed.
+//
+// Applications can inspect the time between events to resolve double or
+// triple clicks.
+type EventMouse struct {
+	t   time.Time
+	btn ButtonMask
+	mod ModMask
+	x   int
+	y   int
+}
+
+// When returns the time when this EventMouse was created.
+func (ev *EventMouse) When() time.Time {
+	return ev.t
+}
+
+// Buttons returns the list of buttons that were pressed or wheel motions.
+func (ev *EventMouse) Buttons() ButtonMask {
+	return ev.btn
+}
+
+// Modifiers returns a list of keyboard modifiers that were pressed
+// with the mouse button(s).
+func (ev *EventMouse) Modifiers() ModMask {
+	return ev.mod
+}
+
+// Position returns the mouse position in character cells.  The origin
+// 0, 0 is at the upper left corner.
+func (ev *EventMouse) Position() (int, int) {
+	return ev.x, ev.y
+}
+
+// NewEventMouse is used to create a new mouse event.  Applications
+// shouldn't need to use this; its mostly for screen implementors.
+func NewEventMouse(x, y int, btn ButtonMask, mod ModMask) *EventMouse {
+	return &EventMouse{t: time.Now(), x: x, y: y, btn: btn, mod: mod}
+}
+
+// ButtonMask is a mask of mouse buttons and wheel events.  Mouse button presses
+// are normally delivered as both press and release events.  Mouse wheel events
+// are normally just single impulse events.  Windows supports up to eight
+// separate buttons plus all four wheel directions, but XTerm can only support
+// mouse buttons 1-3 and wheel up/down.  Its not unheard of for terminals
+// to support only one or two buttons (think Macs).  Old terminals, and true
+// emulations (such as vt100) won't support mice at all, of course.
+type ButtonMask int16
+
+// These are the actual button values.  Note that tcell version 1.x reversed buttons
+// two and three on *nix based terminals.  We use button 1 as the primary, and
+// button 2 as the secondary, and button 3 (which is often missing) as the middle.
+const (
+	Button1 ButtonMask = 1 << iota // Usually the left (primary) mouse button.
+	Button2                        // Usually the right (secondary) mouse button.
+	Button3                        // Usually the middle mouse button.
+	Button4                        // Often a side button (thumb/next).
+	Button5                        // Often a side button (thumb/prev).
+	Button6
+	Button7
+	Button8
+	WheelUp                   // Wheel motion up/away from user.
+	WheelDown                 // Wheel motion down/towards user.
+	WheelLeft                 // Wheel motion to left.
+	WheelRight                // Wheel motion to right.
+	ButtonNone ButtonMask = 0 // No button or wheel events.
+
+	ButtonPrimary   = Button1
+	ButtonSecondary = Button2
+	ButtonMiddle    = Button3
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go b/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go
new file mode 100644
index 0000000..28fd464
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/nonblock_bsd.go
@@ -0,0 +1,42 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package tcell
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+// BSD systems use TIOC style ioctls.
+
+// tcSetBufParams is used by the tty driver on UNIX systems to configure the
+// buffering parameters (minimum character count and minimum wait time in msec.)
+// This also waits for output to drain first.
+func tcSetBufParams(fd int, vMin uint8, vTime uint8) error {
+	_ = syscall.SetNonblock(fd, true)
+	tio, err := unix.IoctlGetTermios(fd, unix.TIOCGETA)
+	if err != nil {
+		return err
+	}
+	tio.Cc[unix.VMIN] = vMin
+	tio.Cc[unix.VTIME] = vTime
+	if err = unix.IoctlSetTermios(fd, unix.TIOCSETAW, tio); err != nil {
+		return err
+	}
+	return nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go b/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go
new file mode 100644
index 0000000..fe31844
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/nonblock_unix.go
@@ -0,0 +1,40 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build linux aix zos solaris
+
+package tcell
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+// tcSetBufParams is used by the tty driver on UNIX systems to configure the
+// buffering parameters (minimum character count and minimum wait time in msec.)
+// This also waits for output to drain first.
+func tcSetBufParams(fd int, vMin uint8, vTime uint8) error {
+	_ = syscall.SetNonblock(fd, true)
+	tio, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return err
+	}
+	tio.Cc[unix.VMIN] = vMin
+	tio.Cc[unix.VTIME] = vTime
+	if err = unix.IoctlSetTermios(fd, unix.TCSETSW, tio); err != nil {
+		return err
+	}
+	return nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/paste.go b/vendor/github.com/gdamore/tcell/v2/paste.go
new file mode 100644
index 0000000..71cf8b1
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/paste.go
@@ -0,0 +1,48 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"time"
+)
+
+// EventPaste is used to mark the start and end of a bracketed paste.
+// An event with .Start() true will be sent to mark the start.
+// Then a number of keys will be sent to indicate that the content
+// is pasted in.  At the end, an event with .Start() false will be sent.
+type EventPaste struct {
+	start bool
+	t     time.Time
+}
+
+// When returns the time when this EventMouse was created.
+func (ev *EventPaste) When() time.Time {
+	return ev.t
+}
+
+// Start returns true if this is the start of a paste.
+func (ev *EventPaste) Start() bool {
+	return ev.start
+}
+
+// End returns true if this is the end of a paste.
+func (ev *EventPaste) End() bool {
+	return !ev.start
+}
+
+// NewEventPaste returns a new EventPaste.
+func NewEventPaste(start bool) *EventPaste {
+	return &EventPaste{t: time.Now(), start: start}
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/resize.go b/vendor/github.com/gdamore/tcell/v2/resize.go
new file mode 100644
index 0000000..0385673
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/resize.go
@@ -0,0 +1,42 @@
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"time"
+)
+
+// EventResize is sent when the window size changes.
+type EventResize struct {
+	t time.Time
+	w int
+	h int
+}
+
+// NewEventResize creates an EventResize with the new updated window size,
+// which is given in character cells.
+func NewEventResize(width, height int) *EventResize {
+	return &EventResize{t: time.Now(), w: width, h: height}
+}
+
+// When returns the time when the Event was created.
+func (ev *EventResize) When() time.Time {
+	return ev.t
+}
+
+// Size returns the new window size as width, height in character cells.
+func (ev *EventResize) Size() (int, int) {
+	return ev.w, ev.h
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/runes.go b/vendor/github.com/gdamore/tcell/v2/runes.go
new file mode 100644
index 0000000..ed9c63b
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/runes.go
@@ -0,0 +1,111 @@
+// Copyright 2015 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+// The names of these constants are chosen to match Terminfo names,
+// modulo case, and changing the prefix from ACS_ to Rune.  These are
+// the runes we provide extra special handling for, with ASCII fallbacks
+// for terminals that lack them.
+const (
+	RuneSterling = '£'
+	RuneDArrow   = '↓'
+	RuneLArrow   = '←'
+	RuneRArrow   = '→'
+	RuneUArrow   = '↑'
+	RuneBullet   = '·'
+	RuneBoard    = '░'
+	RuneCkBoard  = '▒'
+	RuneDegree   = '°'
+	RuneDiamond  = '◆'
+	RuneGEqual   = '≥'
+	RunePi       = 'π'
+	RuneHLine    = '─'
+	RuneLantern  = '§'
+	RunePlus     = '┼'
+	RuneLEqual   = '≤'
+	RuneLLCorner = '└'
+	RuneLRCorner = '┘'
+	RuneNEqual   = '≠'
+	RunePlMinus  = '±'
+	RuneS1       = '⎺'
+	RuneS3       = '⎻'
+	RuneS7       = '⎼'
+	RuneS9       = '⎽'
+	RuneBlock    = '█'
+	RuneTTee     = '┬'
+	RuneRTee     = '┤'
+	RuneLTee     = '├'
+	RuneBTee     = '┴'
+	RuneULCorner = '┌'
+	RuneURCorner = '┐'
+	RuneVLine    = '│'
+)
+
+// RuneFallbacks is the default map of fallback strings that will be
+// used to replace a rune when no other more appropriate transformation
+// is available, and the rune cannot be displayed directly.
+//
+// New entries may be added to this map over time, as it becomes clear
+// that such is desirable.  Characters that represent either letters or
+// numbers should not be added to this list unless it is certain that
+// the meaning will still convey unambiguously.
+//
+// As an example, it would be appropriate to add an ASCII mapping for
+// the full width form of the letter 'A', but it would not be appropriate
+// to do so a glyph representing the country China.
+//
+// Programs that desire richer fallbacks may register additional ones,
+// or change or even remove these mappings with Screen.RegisterRuneFallback
+// Screen.UnregisterRuneFallback methods.
+//
+// Note that Unicode is presumed to be able to display all glyphs.
+// This is a pretty poor assumption, but there is no easy way to
+// figure out which glyphs are supported in a given font.  Hence,
+// some care in selecting the characters you support in your application
+// is still appropriate.
+var RuneFallbacks = map[rune]string{
+	RuneSterling: "f",
+	RuneDArrow:   "v",
+	RuneLArrow:   "<",
+	RuneRArrow:   ">",
+	RuneUArrow:   "^",
+	RuneBullet:   "o",
+	RuneBoard:    "#",
+	RuneCkBoard:  ":",
+	RuneDegree:   "\\",
+	RuneDiamond:  "+",
+	RuneGEqual:   ">",
+	RunePi:       "*",
+	RuneHLine:    "-",
+	RuneLantern:  "#",
+	RunePlus:     "+",
+	RuneLEqual:   "<",
+	RuneLLCorner: "+",
+	RuneLRCorner: "+",
+	RuneNEqual:   "!",
+	RunePlMinus:  "#",
+	RuneS1:       "~",
+	RuneS3:       "-",
+	RuneS7:       "-",
+	RuneS9:       "_",
+	RuneBlock:    "#",
+	RuneTTee:     "+",
+	RuneRTee:     "+",
+	RuneLTee:     "+",
+	RuneBTee:     "+",
+	RuneULCorner: "+",
+	RuneURCorner: "+",
+	RuneVLine:    "|",
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/screen.go b/vendor/github.com/gdamore/tcell/v2/screen.go
new file mode 100644
index 0000000..cbe505f
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/screen.go
@@ -0,0 +1,260 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+// Screen represents the physical (or emulated) screen.
+// This can be a terminal window or a physical console.  Platforms implement
+// this differently.
+type Screen interface {
+	// Init initializes the screen for use.
+	Init() error
+
+	// Fini finalizes the screen also releasing resources.
+	Fini()
+
+	// Clear erases the screen.  The contents of any screen buffers
+	// will also be cleared.  This has the logical effect of
+	// filling the screen with spaces, using the global default style.
+	Clear()
+
+	// Fill fills the screen with the given character and style.
+	Fill(rune, Style)
+
+	// SetCell is an older API, and will be removed.  Please use
+	// SetContent instead; SetCell is implemented in terms of SetContent.
+	SetCell(x int, y int, style Style, ch ...rune)
+
+	// GetContent returns the contents at the given location.  If the
+	// coordinates are out of range, then the values will be 0, nil,
+	// StyleDefault.  Note that the contents returned are logical contents
+	// and may not actually be what is displayed, but rather are what will
+	// be displayed if Show() or Sync() is called.  The width is the width
+	// in screen cells; most often this will be 1, but some East Asian
+	// characters require two cells.
+	GetContent(x, y int) (mainc rune, combc []rune, style Style, width int)
+
+	// SetContent sets the contents of the given cell location.  If
+	// the coordinates are out of range, then the operation is ignored.
+	//
+	// The first rune is the primary non-zero width rune.  The array
+	// that follows is a possible list of combining characters to append,
+	// and will usually be nil (no combining characters.)
+	//
+	// The results are not displayd until Show() or Sync() is called.
+	//
+	// Note that wide (East Asian full width) runes occupy two cells,
+	// and attempts to place character at next cell to the right will have
+	// undefined effects.  Wide runes that are printed in the
+	// last column will be replaced with a single width space on output.
+	SetContent(x int, y int, mainc rune, combc []rune, style Style)
+
+	// SetStyle sets the default style to use when clearing the screen
+	// or when StyleDefault is specified.  If it is also StyleDefault,
+	// then whatever system/terminal default is relevant will be used.
+	SetStyle(style Style)
+
+	// ShowCursor is used to display the cursor at a given location.
+	// If the coordinates -1, -1 are given or are otherwise outside the
+	// dimensions of the screen, the cursor will be hidden.
+	ShowCursor(x int, y int)
+
+	// HideCursor is used to hide the cursor.  Its an alias for
+	// ShowCursor(-1, -1).
+	HideCursor()
+
+	// Size returns the screen size as width, height.  This changes in
+	// response to a call to Clear or Flush.
+	Size() (int, int)
+
+	// ChannelEvents is an infinite loop that waits for an event and
+	// channels it into the user provided channel ch.  Closing the
+	// quit channel and calling the Fini method are cancellation
+	// signals.  When a cancellation signal is received the method
+	// returns after closing ch.
+	//
+	// This method should be used as a goroutine.
+	//
+	// NOTE: PollEvent should not be called while this method is running.
+	ChannelEvents(ch chan<- Event, quit <-chan struct{})
+
+	// PollEvent waits for events to arrive.  Main application loops
+	// must spin on this to prevent the application from stalling.
+	// Furthermore, this will return nil if the Screen is finalized.
+	PollEvent() Event
+
+	// HasPendingEvent returns true if PollEvent would return an event
+	// without blocking.  If the screen is stopped and PollEvent would
+	// return nil, then the return value from this function is unspecified.
+	// The purpose of this function is to allow multiple events to be collected
+	// at once, to minimize screen redraws.
+	HasPendingEvent() bool
+
+	// PostEvent tries to post an event into the event stream.  This
+	// can fail if the event queue is full.  In that case, the event
+	// is dropped, and ErrEventQFull is returned.
+	PostEvent(ev Event) error
+
+	// Deprecated: PostEventWait is unsafe, and will be removed
+	// in the future.
+	//
+	// PostEventWait is like PostEvent, but if the queue is full, it
+	// blocks until there is space in the queue, making delivery
+	// reliable.  However, it is VERY important that this function
+	// never be called from within whatever event loop is polling
+	// with PollEvent(), otherwise a deadlock may arise.
+	//
+	// For this reason, when using this function, the use of a
+	// Goroutine is recommended to ensure no deadlock can occur.
+	PostEventWait(ev Event)
+
+	// EnableMouse enables the mouse.  (If your terminal supports it.)
+	// If no flags are specified, then all events are reported, if the
+	// terminal supports them.
+	EnableMouse(...MouseFlags)
+
+	// DisableMouse disables the mouse.
+	DisableMouse()
+
+	// EnablePaste enables bracketed paste mode, if supported.
+	EnablePaste()
+
+	// DisablePaste disables bracketed paste mode.
+	DisablePaste()
+
+	// HasMouse returns true if the terminal (apparently) supports a
+	// mouse.  Note that the a return value of true doesn't guarantee that
+	// a mouse/pointing device is present; a false return definitely
+	// indicates no mouse support is available.
+	HasMouse() bool
+
+	// Colors returns the number of colors.  All colors are assumed to
+	// use the ANSI color map.  If a terminal is monochrome, it will
+	// return 0.
+	Colors() int
+
+	// Show makes all the content changes made using SetContent() visible
+	// on the display.
+	//
+	// It does so in the most efficient and least visually disruptive
+	// manner possible.
+	Show()
+
+	// Sync works like Show(), but it updates every visible cell on the
+	// physical display, assuming that it is not synchronized with any
+	// internal model.  This may be both expensive and visually jarring,
+	// so it should only be used when believed to actually be necessary.
+	//
+	// Typically this is called as a result of a user-requested redraw
+	// (e.g. to clear up on screen corruption caused by some other program),
+	// or during a resize event.
+	Sync()
+
+	// CharacterSet returns information about the character set.
+	// This isn't the full locale, but it does give us the input/output
+	// character set.  Note that this is just for diagnostic purposes,
+	// we normally translate input/output to/from UTF-8, regardless of
+	// what the user's environment is.
+	CharacterSet() string
+
+	// RegisterRuneFallback adds a fallback for runes that are not
+	// part of the character set -- for example one could register
+	// o as a fallback for ø.  This should be done cautiously for
+	// characters that might be displayed ordinarily in language
+	// specific text -- characters that could change the meaning of
+	// of written text would be dangerous.  The intention here is to
+	// facilitate fallback characters in pseudo-graphical applications.
+	//
+	// If the terminal has fallbacks already in place via an alternate
+	// character set, those are used in preference.  Also, standard
+	// fallbacks for graphical characters in the ACSC terminfo string
+	// are registered implicitly.
+	//
+	// The display string should be the same width as original rune.
+	// This makes it possible to register two character replacements
+	// for full width East Asian characters, for example.
+	//
+	// It is recommended that replacement strings consist only of
+	// 7-bit ASCII, since other characters may not display everywhere.
+	RegisterRuneFallback(r rune, subst string)
+
+	// UnregisterRuneFallback unmaps a replacement.  It will unmap
+	// the implicit ASCII replacements for alternate characters as well.
+	// When an unmapped char needs to be displayed, but no suitable
+	// glyph is available, '?' is emitted instead.  It is not possible
+	// to "disable" the use of alternate characters that are supported
+	// by your terminal except by changing the terminal database.
+	UnregisterRuneFallback(r rune)
+
+	// CanDisplay returns true if the given rune can be displayed on
+	// this screen.  Note that this is a best guess effort -- whether
+	// your fonts support the character or not may be questionable.
+	// Mostly this is for folks who work outside of Unicode.
+	//
+	// If checkFallbacks is true, then if any (possibly imperfect)
+	// fallbacks are registered, this will return true.  This will
+	// also return true if the terminal can replace the glyph with
+	// one that is visually indistinguishable from the one requested.
+	CanDisplay(r rune, checkFallbacks bool) bool
+
+	// Resize does nothing, since its generally not possible to
+	// ask a screen to resize, but it allows the Screen to implement
+	// the View interface.
+	Resize(int, int, int, int)
+
+	// HasKey returns true if the keyboard is believed to have the
+	// key.  In some cases a keyboard may have keys with this name
+	// but no support for them, while in others a key may be reported
+	// as supported but not actually be usable (such as some emulators
+	// that hijack certain keys).  Its best not to depend to strictly
+	// on this function, but it can be used for hinting when building
+	// menus, displayed hot-keys, etc.  Note that KeyRune (literal
+	// runes) is always true.
+	HasKey(Key) bool
+
+	// Suspend pauses input and output processing.  It also restores the
+	// terminal settings to what they were when the application started.
+	// This can be used to, for example, run a sub-shell.
+	Suspend() error
+
+	// Resume resumes after Suspend().
+	Resume() error
+
+	// Beep attempts to sound an OS-dependent audible alert and returns an error
+	// when unsuccessful.
+	Beep() error
+}
+
+// NewScreen returns a default Screen suitable for the user's terminal
+// environment.
+func NewScreen() (Screen, error) {
+	// Windows is happier if we try for a console screen first.
+	if s, _ := NewConsoleScreen(); s != nil {
+		return s, nil
+	} else if s, e := NewTerminfoScreen(); s != nil {
+		return s, nil
+	} else {
+		return nil, e
+	}
+}
+
+// MouseFlags are options to modify the handling of mouse events.
+// Actual events can be or'd together.
+type MouseFlags int
+
+const (
+	MouseButtonEvents = MouseFlags(1) // Click events only
+	MouseDragEvents   = MouseFlags(2) // Click-drag events (includes button events)
+	MouseMotionEvents = MouseFlags(4) // All mouse events (includes click and drag events)
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/simulation.go b/vendor/github.com/gdamore/tcell/v2/simulation.go
new file mode 100644
index 0000000..451460b
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/simulation.go
@@ -0,0 +1,554 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"sync"
+	"unicode/utf8"
+
+	"golang.org/x/text/transform"
+)
+
+// NewSimulationScreen returns a SimulationScreen.  Note that
+// SimulationScreen is also a Screen.
+func NewSimulationScreen(charset string) SimulationScreen {
+	if charset == "" {
+		charset = "UTF-8"
+	}
+	s := &simscreen{charset: charset}
+	return s
+}
+
+// SimulationScreen represents a screen simulation.  This is intended to
+// be a superset of normal Screens, but also adds some important interfaces
+// for testing.
+type SimulationScreen interface {
+	// InjectKeyBytes injects a stream of bytes corresponding to
+	// the native encoding (see charset).  It turns true if the entire
+	// set of bytes were processed and delivered as KeyEvents, false
+	// if any bytes were not fully understood.  Any bytes that are not
+	// fully converted are discarded.
+	InjectKeyBytes(buf []byte) bool
+
+	// InjectKey injects a key event.  The rune is a UTF-8 rune, post
+	// any translation.
+	InjectKey(key Key, r rune, mod ModMask)
+
+	// InjectMouse injects a mouse event.
+	InjectMouse(x, y int, buttons ButtonMask, mod ModMask)
+
+	// SetSize resizes the underlying physical screen.  It also causes
+	// a resize event to be injected during the next Show() or Sync().
+	// A new physical contents array will be allocated (with data from
+	// the old copied), so any prior value obtained with GetContents
+	// won't be used anymore
+	SetSize(width, height int)
+
+	// GetContents returns screen contents as an array of
+	// cells, along with the physical width & height.   Note that the
+	// physical contents will be used until the next time SetSize()
+	// is called.
+	GetContents() (cells []SimCell, width int, height int)
+
+	// GetCursor returns the cursor details.
+	GetCursor() (x int, y int, visible bool)
+
+	Screen
+}
+
+// SimCell represents a simulated screen cell.  The purpose of this
+// is to track on screen content.
+type SimCell struct {
+	// Bytes is the actual character bytes.  Normally this is
+	// rune data, but it could be be data in another encoding system.
+	Bytes []byte
+
+	// Style is the style used to display the data.
+	Style Style
+
+	// Runes is the list of runes, unadulterated, in UTF-8.
+	Runes []rune
+}
+
+type simscreen struct {
+	physw int
+	physh int
+	fini  bool
+	style Style
+	evch  chan Event
+	quit  chan struct{}
+
+	front     []SimCell
+	back      CellBuffer
+	clear     bool
+	cursorx   int
+	cursory   int
+	cursorvis bool
+	mouse     bool
+	paste     bool
+	charset   string
+	encoder   transform.Transformer
+	decoder   transform.Transformer
+	fillchar  rune
+	fillstyle Style
+	fallback  map[rune]string
+
+	sync.Mutex
+}
+
+func (s *simscreen) Init() error {
+	s.evch = make(chan Event, 10)
+	s.quit = make(chan struct{})
+	s.fillchar = 'X'
+	s.fillstyle = StyleDefault
+	s.mouse = false
+	s.physw = 80
+	s.physh = 25
+	s.cursorx = -1
+	s.cursory = -1
+	s.style = StyleDefault
+
+	if enc := GetEncoding(s.charset); enc != nil {
+		s.encoder = enc.NewEncoder()
+		s.decoder = enc.NewDecoder()
+	} else {
+		return ErrNoCharset
+	}
+
+	s.front = make([]SimCell, s.physw*s.physh)
+	s.back.Resize(80, 25)
+
+	// default fallbacks
+	s.fallback = make(map[rune]string)
+	for k, v := range RuneFallbacks {
+		s.fallback[k] = v
+	}
+	return nil
+}
+
+func (s *simscreen) Fini() {
+	s.Lock()
+	s.fini = true
+	s.back.Resize(0, 0)
+	s.Unlock()
+	if s.quit != nil {
+		close(s.quit)
+	}
+	s.physw = 0
+	s.physh = 0
+	s.front = nil
+}
+
+func (s *simscreen) SetStyle(style Style) {
+	s.Lock()
+	s.style = style
+	s.Unlock()
+}
+
+func (s *simscreen) Clear() {
+	s.Fill(' ', s.style)
+}
+
+func (s *simscreen) Fill(r rune, style Style) {
+	s.Lock()
+	s.back.Fill(r, style)
+	s.Unlock()
+}
+
+func (s *simscreen) SetCell(x, y int, style Style, ch ...rune) {
+
+	if len(ch) > 0 {
+		s.SetContent(x, y, ch[0], ch[1:], style)
+	} else {
+		s.SetContent(x, y, ' ', nil, style)
+	}
+}
+
+func (s *simscreen) SetContent(x, y int, mainc rune, combc []rune, st Style) {
+
+	s.Lock()
+	s.back.SetContent(x, y, mainc, combc, st)
+	s.Unlock()
+}
+
+func (s *simscreen) GetContent(x, y int) (rune, []rune, Style, int) {
+	var mainc rune
+	var combc []rune
+	var style Style
+	var width int
+	s.Lock()
+	mainc, combc, style, width = s.back.GetContent(x, y)
+	s.Unlock()
+	return mainc, combc, style, width
+}
+
+func (s *simscreen) drawCell(x, y int) int {
+
+	mainc, combc, style, width := s.back.GetContent(x, y)
+	if !s.back.Dirty(x, y) {
+		return width
+	}
+	if x >= s.physw || y >= s.physh || x < 0 || y < 0 {
+		return width
+	}
+	simc := &s.front[(y*s.physw)+x]
+
+	if style == StyleDefault {
+		style = s.style
+	}
+	simc.Style = style
+	simc.Runes = append([]rune{mainc}, combc...)
+
+	// now emit runes - taking care to not overrun width with a
+	// wide character, and to ensure that we emit exactly one regular
+	// character followed up by any residual combing characters
+
+	simc.Bytes = nil
+
+	if x > s.physw-width {
+		simc.Runes = []rune{' '}
+		simc.Bytes = []byte{' '}
+		return width
+	}
+
+	lbuf := make([]byte, 12)
+	ubuf := make([]byte, 12)
+	nout := 0
+
+	for _, r := range simc.Runes {
+
+		l := utf8.EncodeRune(ubuf, r)
+
+		nout, _, _ = s.encoder.Transform(lbuf, ubuf[:l], true)
+
+		if nout == 0 || lbuf[0] == '\x1a' {
+
+			// skip combining
+
+			if subst, ok := s.fallback[r]; ok {
+				simc.Bytes = append(simc.Bytes,
+					[]byte(subst)...)
+
+			} else if r >= ' ' && r <= '~' {
+				simc.Bytes = append(simc.Bytes, byte(r))
+
+			} else if simc.Bytes == nil {
+				simc.Bytes = append(simc.Bytes, '?')
+			}
+		} else {
+			simc.Bytes = append(simc.Bytes, lbuf[:nout]...)
+		}
+	}
+	s.back.SetDirty(x, y, false)
+	return width
+}
+
+func (s *simscreen) ShowCursor(x, y int) {
+	s.Lock()
+	s.cursorx, s.cursory = x, y
+	s.showCursor()
+	s.Unlock()
+}
+
+func (s *simscreen) HideCursor() {
+	s.ShowCursor(-1, -1)
+}
+
+func (s *simscreen) showCursor() {
+
+	x, y := s.cursorx, s.cursory
+	if x < 0 || y < 0 || x >= s.physw || y >= s.physh {
+		s.cursorvis = false
+	} else {
+		s.cursorvis = true
+	}
+}
+
+func (s *simscreen) hideCursor() {
+	// does not update cursor position
+	s.cursorvis = false
+}
+
+func (s *simscreen) Show() {
+	s.Lock()
+	s.resize()
+	s.draw()
+	s.Unlock()
+}
+
+func (s *simscreen) clearScreen() {
+	// We emulate a hardware clear by filling with a specific pattern
+	for i := range s.front {
+		s.front[i].Style = s.fillstyle
+		s.front[i].Runes = []rune{s.fillchar}
+		s.front[i].Bytes = []byte{byte(s.fillchar)}
+	}
+	s.clear = false
+}
+
+func (s *simscreen) draw() {
+	s.hideCursor()
+	if s.clear {
+		s.clearScreen()
+	}
+
+	w, h := s.back.Size()
+	for y := 0; y < h; y++ {
+		for x := 0; x < w; x++ {
+			width := s.drawCell(x, y)
+			x += width - 1
+		}
+	}
+	s.showCursor()
+}
+
+func (s *simscreen) EnableMouse(...MouseFlags) {
+	s.mouse = true
+}
+
+func (s *simscreen) DisableMouse() {
+	s.mouse = false
+}
+
+func (s *simscreen) EnablePaste() {
+	s.paste = true
+}
+
+func (s *simscreen) DisablePaste() {
+	s.paste = false
+}
+
+func (s *simscreen) Size() (int, int) {
+	s.Lock()
+	w, h := s.back.Size()
+	s.Unlock()
+	return w, h
+}
+
+func (s *simscreen) resize() {
+	w, h := s.physw, s.physh
+	ow, oh := s.back.Size()
+	if w != ow || h != oh {
+		s.back.Resize(w, h)
+		ev := NewEventResize(w, h)
+		s.PostEvent(ev)
+	}
+}
+
+func (s *simscreen) Colors() int {
+	return 256
+}
+
+func (s *simscreen) ChannelEvents(ch chan<- Event, quit <-chan struct{}) {
+	defer close(ch)
+	for {
+		select {
+		case <-quit:
+			return
+		case <-s.quit:
+			return
+		case ev := <-s.evch:
+			select {
+			case <-quit:
+				return
+			case <-s.quit:
+				return
+			case ch <- ev:
+			}
+		}
+	}
+}
+
+func (s *simscreen) PollEvent() Event {
+	select {
+	case <-s.quit:
+		return nil
+	case ev := <-s.evch:
+		return ev
+	}
+}
+
+func (s *simscreen) HasPendingEvent() bool {
+	return len(s.evch) > 0
+}
+
+func (s *simscreen) PostEventWait(ev Event) {
+	s.evch <- ev
+}
+
+func (s *simscreen) PostEvent(ev Event) error {
+	select {
+	case s.evch <- ev:
+		return nil
+	default:
+		return ErrEventQFull
+	}
+}
+
+func (s *simscreen) InjectMouse(x, y int, buttons ButtonMask, mod ModMask) {
+	ev := NewEventMouse(x, y, buttons, mod)
+	s.PostEvent(ev)
+}
+
+func (s *simscreen) InjectKey(key Key, r rune, mod ModMask) {
+	ev := NewEventKey(key, r, mod)
+	s.PostEvent(ev)
+}
+
+func (s *simscreen) InjectKeyBytes(b []byte) bool {
+	failed := false
+
+outer:
+	for len(b) > 0 {
+		if b[0] >= ' ' && b[0] <= 0x7F {
+			// printable ASCII easy to deal with -- no encodings
+			ev := NewEventKey(KeyRune, rune(b[0]), ModNone)
+			s.PostEvent(ev)
+			b = b[1:]
+			continue
+		}
+
+		if b[0] < 0x80 {
+			mod := ModNone
+			// No encodings start with low numbered values
+			if Key(b[0]) >= KeyCtrlA && Key(b[0]) <= KeyCtrlZ {
+				mod = ModCtrl
+			}
+			ev := NewEventKey(Key(b[0]), 0, mod)
+			s.PostEvent(ev)
+			b = b[1:]
+			continue
+		}
+
+		utfb := make([]byte, len(b)*4) // worst case
+		for l := 1; l < len(b); l++ {
+			s.decoder.Reset()
+			nout, nin, _ := s.decoder.Transform(utfb, b[:l], true)
+
+			if nout != 0 {
+				r, _ := utf8.DecodeRune(utfb[:nout])
+				if r != utf8.RuneError {
+					ev := NewEventKey(KeyRune, r, ModNone)
+					s.PostEvent(ev)
+				}
+				b = b[nin:]
+				continue outer
+			}
+		}
+		failed = true
+		b = b[1:]
+		continue
+	}
+
+	return !failed
+}
+
+func (s *simscreen) Sync() {
+	s.Lock()
+	s.clear = true
+	s.resize()
+	s.back.Invalidate()
+	s.draw()
+	s.Unlock()
+}
+
+func (s *simscreen) CharacterSet() string {
+	return s.charset
+}
+
+func (s *simscreen) SetSize(w, h int) {
+	s.Lock()
+	newc := make([]SimCell, w*h)
+	for row := 0; row < h && row < s.physh; row++ {
+		for col := 0; col < w && col < s.physw; col++ {
+			newc[(row*w)+col] = s.front[(row*s.physw)+col]
+		}
+	}
+	s.cursorx, s.cursory = -1, -1
+	s.physw, s.physh = w, h
+	s.front = newc
+	s.back.Resize(w, h)
+	s.Unlock()
+}
+
+func (s *simscreen) GetContents() ([]SimCell, int, int) {
+	s.Lock()
+	cells, w, h := s.front, s.physw, s.physh
+	s.Unlock()
+	return cells, w, h
+}
+
+func (s *simscreen) GetCursor() (int, int, bool) {
+	s.Lock()
+	x, y, vis := s.cursorx, s.cursory, s.cursorvis
+	s.Unlock()
+	return x, y, vis
+}
+
+func (s *simscreen) RegisterRuneFallback(r rune, subst string) {
+	s.Lock()
+	s.fallback[r] = subst
+	s.Unlock()
+}
+
+func (s *simscreen) UnregisterRuneFallback(r rune) {
+	s.Lock()
+	delete(s.fallback, r)
+	s.Unlock()
+}
+
+func (s *simscreen) CanDisplay(r rune, checkFallbacks bool) bool {
+
+	if enc := s.encoder; enc != nil {
+		nb := make([]byte, 6)
+		ob := make([]byte, 6)
+		num := utf8.EncodeRune(ob, r)
+
+		enc.Reset()
+		dst, _, err := enc.Transform(nb, ob[:num], true)
+		if dst != 0 && err == nil && nb[0] != '\x1A' {
+			return true
+		}
+	}
+	if !checkFallbacks {
+		return false
+	}
+	if _, ok := s.fallback[r]; ok {
+		return true
+	}
+	return false
+}
+
+func (s *simscreen) HasMouse() bool {
+	return false
+}
+
+func (s *simscreen) Resize(int, int, int, int) {}
+
+func (s *simscreen) HasKey(Key) bool {
+	return true
+}
+
+func (s *simscreen) Beep() error {
+	return nil
+}
+
+func (s *simscreen) Suspend() error {
+	return nil
+}
+
+func (s *simscreen) Resume() error {
+	return nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/stdin_unix.go b/vendor/github.com/gdamore/tcell/v2/stdin_unix.go
new file mode 100644
index 0000000..e3d32e9
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/stdin_unix.go
@@ -0,0 +1,177 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
+
+package tcell
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/signal"
+	"strconv"
+	"sync"
+	"syscall"
+	"time"
+
+	"golang.org/x/term"
+)
+
+// stdIoTty is an implementation of the Tty API based upon stdin/stdout.
+type stdIoTty struct {
+	fd    int
+	in    *os.File
+	out   *os.File
+	saved *term.State
+	sig   chan os.Signal
+	cb    func()
+	stopQ chan struct{}
+	dev   string
+	wg    sync.WaitGroup
+	l     sync.Mutex
+}
+
+func (tty *stdIoTty) Read(b []byte) (int, error) {
+	return tty.in.Read(b)
+}
+
+func (tty *stdIoTty) Write(b []byte) (int, error) {
+	return tty.out.Write(b)
+}
+
+func (tty *stdIoTty) Close() error {
+	return nil
+}
+
+func (tty *stdIoTty) Start() error {
+	tty.l.Lock()
+	defer tty.l.Unlock()
+
+	// We open another copy of /dev/tty.  This is a workaround for unusual behavior
+	// observed in macOS, apparently caused when a subshell (for example) closes our
+	// own tty device (when it exits for example).  Getting a fresh new one seems to
+	// resolve the problem.  (We believe this is a bug in the macOS tty driver that
+	// fails to account for dup() references to the same file before applying close()
+	// related behaviors to the tty.)  We're also holding the original copy we opened
+	// since closing that might have deleterious effects as well.  The upshot is that
+	// we will have up to two separate file handles open on /dev/tty.  (Note that when
+	// using stdin/stdout instead of /dev/tty this problem is not observed.)
+	var err error
+	tty.in = os.Stdin
+	tty.out = os.Stdout
+	tty.fd = int(tty.in.Fd())
+
+	if !term.IsTerminal(tty.fd) {
+		return errors.New("device is not a terminal")
+	}
+
+	_ = tty.in.SetReadDeadline(time.Time{})
+	saved, err := term.MakeRaw(tty.fd) // also sets vMin and vTime
+	if err != nil {
+		return err
+	}
+	tty.saved = saved
+
+	tty.stopQ = make(chan struct{})
+	tty.wg.Add(1)
+	go func(stopQ chan struct{}) {
+		defer tty.wg.Done()
+		for {
+			select {
+			case <-tty.sig:
+				tty.l.Lock()
+				cb := tty.cb
+				tty.l.Unlock()
+				if cb != nil {
+					cb()
+				}
+			case <-stopQ:
+				return
+			}
+		}
+	}(tty.stopQ)
+
+	signal.Notify(tty.sig, syscall.SIGWINCH)
+	return nil
+}
+
+func (tty *stdIoTty) Drain() error {
+	_ = tty.in.SetReadDeadline(time.Now())
+	if err := tcSetBufParams(tty.fd, 0, 0); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (tty *stdIoTty) Stop() error {
+	tty.l.Lock()
+	if err := term.Restore(tty.fd, tty.saved); err != nil {
+		tty.l.Unlock()
+		return err
+	}
+	_ = tty.in.SetReadDeadline(time.Now())
+
+	signal.Stop(tty.sig)
+	close(tty.stopQ)
+	tty.l.Unlock()
+
+	tty.wg.Wait()
+
+	return nil
+}
+
+func (tty *stdIoTty) WindowSize() (int, int, error) {
+	w, h, err := term.GetSize(tty.fd)
+	if err != nil {
+		return 0, 0, err
+	}
+	if w == 0 {
+		w, _ = strconv.Atoi(os.Getenv("COLUMNS"))
+	}
+	if w == 0 {
+		w = 80 // default
+	}
+	if h == 0 {
+		h, _ = strconv.Atoi(os.Getenv("LINES"))
+	}
+	if h == 0 {
+		h = 25 // default
+	}
+	return w, h, nil
+}
+
+func (tty *stdIoTty) NotifyResize(cb func()) {
+	tty.l.Lock()
+	tty.cb = cb
+	tty.l.Unlock()
+}
+
+// NewStdioTty opens a tty using standard input/output.
+func NewStdIoTty() (Tty, error) {
+	tty := &stdIoTty{
+		sig: make(chan os.Signal),
+		in: os.Stdin,
+		out: os.Stdout,
+	}
+	var err error
+	tty.fd = int(tty.in.Fd())
+	if !term.IsTerminal(tty.fd) {
+		return nil, errors.New("not a terminal")
+	}
+	if tty.saved, err = term.GetState(tty.fd); err != nil {
+		return nil, fmt.Errorf("failed to get state: %w", err)
+	}
+	return tty, nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/style.go b/vendor/github.com/gdamore/tcell/v2/style.go
new file mode 100644
index 0000000..8359e28
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/style.go
@@ -0,0 +1,137 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+// Style represents a complete text style, including both foreground color,
+// background color, and additional attributes such as "bold" or "underline".
+//
+// Note that not all terminals can display all colors or attributes, and
+// many might have specific incompatibilities between specific attributes
+// and color combinations.
+//
+// To use Style, just declare a variable of its type.
+type Style struct {
+	fg    Color
+	bg    Color
+	attrs AttrMask
+}
+
+// StyleDefault represents a default style, based upon the context.
+// It is the zero value.
+var StyleDefault Style
+
+// styleInvalid is just an arbitrary invalid style used internally.
+var styleInvalid = Style{attrs: AttrInvalid}
+
+// Foreground returns a new style based on s, with the foreground color set
+// as requested.  ColorDefault can be used to select the global default.
+func (s Style) Foreground(c Color) Style {
+	return Style{
+		fg:    c,
+		bg:    s.bg,
+		attrs: s.attrs,
+	}
+}
+
+// Background returns a new style based on s, with the background color set
+// as requested.  ColorDefault can be used to select the global default.
+func (s Style) Background(c Color) Style {
+	return Style{
+		fg:    s.fg,
+		bg:    c,
+		attrs: s.attrs,
+	}
+}
+
+// Decompose breaks a style up, returning the foreground, background,
+// and other attributes.
+func (s Style) Decompose() (fg Color, bg Color, attr AttrMask) {
+	return s.fg, s.bg, s.attrs
+}
+
+func (s Style) setAttrs(attrs AttrMask, on bool) Style {
+	if on {
+		return Style{
+			fg:    s.fg,
+			bg:    s.bg,
+			attrs: s.attrs | attrs,
+		}
+	}
+	return Style{
+		fg:    s.fg,
+		bg:    s.bg,
+		attrs: s.attrs &^ attrs,
+	}
+}
+
+// Normal returns the style with all attributes disabled.
+func (s Style) Normal() Style {
+	return Style{
+		fg: s.fg,
+		bg: s.bg,
+	}
+}
+
+// Bold returns a new style based on s, with the bold attribute set
+// as requested.
+func (s Style) Bold(on bool) Style {
+	return s.setAttrs(AttrBold, on)
+}
+
+// Blink returns a new style based on s, with the blink attribute set
+// as requested.
+func (s Style) Blink(on bool) Style {
+	return s.setAttrs(AttrBlink, on)
+}
+
+// Dim returns a new style based on s, with the dim attribute set
+// as requested.
+func (s Style) Dim(on bool) Style {
+	return s.setAttrs(AttrDim, on)
+}
+
+// Italic returns a new style based on s, with the italic attribute set
+// as requested.
+func (s Style) Italic(on bool) Style {
+	return s.setAttrs(AttrItalic, on)
+}
+
+// Reverse returns a new style based on s, with the reverse attribute set
+// as requested.  (Reverse usually changes the foreground and background
+// colors.)
+func (s Style) Reverse(on bool) Style {
+	return s.setAttrs(AttrReverse, on)
+}
+
+// Underline returns a new style based on s, with the underline attribute set
+// as requested.
+func (s Style) Underline(on bool) Style {
+	return s.setAttrs(AttrUnderline, on)
+}
+
+// StrikeThrough sets strikethrough mode.
+func (s Style) StrikeThrough(on bool) Style {
+	return s.setAttrs(AttrStrikeThrough, on)
+}
+
+// Attributes returns a new style based on s, with its attributes set as
+// specified.
+func (s Style) Attributes(attrs AttrMask) Style {
+	return Style{
+		fg:    s.fg,
+		bg:    s.bg,
+		attrs: attrs,
+	}
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/.gitignore b/vendor/github.com/gdamore/tcell/v2/terminfo/.gitignore
new file mode 100644
index 0000000..74f3c04
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/.gitignore
@@ -0,0 +1 @@
+mkinfo
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/README.md b/vendor/github.com/gdamore/tcell/v2/terminfo/README.md
new file mode 100644
index 0000000..20ae937
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/README.md
@@ -0,0 +1,25 @@
+This package represents the parent for all terminals.
+
+In older versions of tcell we had (a couple of) different
+external file formats for the terminal database.  Those are
+now removed.  All terminal definitions are supplied by
+one of two methods:
+
+1. Compiled Go code
+
+2. For systems with terminfo and infocmp, dynamically
+   generated at runtime.
+
+The Go code can be generated using the mkinfo utility in
+this directory.  The database entry should be generated
+into a package in a directory named as the first character
+of the package name.  (This permits us to group them all
+without having a huge directory of little packages.)
+
+It may be desirable to add new packages to the extended
+package, or -- rarely -- the base package.
+
+Applications which want to have the large set of terminal
+descriptions built into the binary can simply import the
+extended package.  Otherwise a smaller reasonable default
+set (the base package) will be included instead.
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/TERMINALS.md b/vendor/github.com/gdamore/tcell/v2/terminfo/TERMINALS.md
new file mode 100644
index 0000000..85c1e61
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/TERMINALS.md
@@ -0,0 +1,7 @@
+TERMINALS
+=========
+
+The best way to populate terminals on Debian is to install ncurses,
+ncurses-term, screen, tmux, rxvt-unicode, and dvtm.  This populates the
+the terminfo database so that we can have a reasonable set of starting
+terminals.
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go
new file mode 100644
index 0000000..503c919
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/a/aixterm/term.go
@@ -0,0 +1,83 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package aixterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// IBM Aixterm Terminal Emulator
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "aixterm",
+		Columns:      80,
+		Lines:        25,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		AttrOff:      "\x1b[0;10m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[32m\x1b[40m",
+		PadChar:      "\x00",
+		AltChars:     "jjkkllmmnnqqttuuvvwwxx",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[139q",
+		KeyDelete:    "\x1b[P",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[H",
+		KeyEnd:       "\x1b[146q",
+		KeyPgUp:      "\x1b[150q",
+		KeyPgDn:      "\x1b[154q",
+		KeyF1:        "\x1b[001q",
+		KeyF2:        "\x1b[002q",
+		KeyF3:        "\x1b[003q",
+		KeyF4:        "\x1b[004q",
+		KeyF5:        "\x1b[005q",
+		KeyF6:        "\x1b[006q",
+		KeyF7:        "\x1b[007q",
+		KeyF8:        "\x1b[008q",
+		KeyF9:        "\x1b[009q",
+		KeyF10:       "\x1b[010q",
+		KeyF11:       "\x1b[011q",
+		KeyF12:       "\x1b[012q",
+		KeyF13:       "\x1b[013q",
+		KeyF14:       "\x1b[014q",
+		KeyF15:       "\x1b[015q",
+		KeyF16:       "\x1b[016q",
+		KeyF17:       "\x1b[017q",
+		KeyF18:       "\x1b[018q",
+		KeyF19:       "\x1b[019q",
+		KeyF20:       "\x1b[020q",
+		KeyF21:       "\x1b[021q",
+		KeyF22:       "\x1b[022q",
+		KeyF23:       "\x1b[023q",
+		KeyF24:       "\x1b[024q",
+		KeyF25:       "\x1b[025q",
+		KeyF26:       "\x1b[026q",
+		KeyF27:       "\x1b[027q",
+		KeyF28:       "\x1b[028q",
+		KeyF29:       "\x1b[029q",
+		KeyF30:       "\x1b[030q",
+		KeyF31:       "\x1b[031q",
+		KeyF32:       "\x1b[032q",
+		KeyF33:       "\x1b[033q",
+		KeyF34:       "\x1b[034q",
+		KeyF35:       "\x1b[035q",
+		KeyF36:       "\x1b[036q",
+		KeyClear:     "\x1b[144q",
+		KeyBacktab:   "\x1b[Z",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go
new file mode 100644
index 0000000..5b97998
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/a/alacritty/term.go
@@ -0,0 +1,69 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package alacritty
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// alacritty terminal emulator
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "alacritty",
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:        "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[<",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/a/ansi/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/a/ansi/term.go
new file mode 100644
index 0000000..5c572fd
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/a/ansi/term.go
@@ -0,0 +1,43 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package ansi
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// ansi/pc-term compatible with color
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "ansi",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		AttrOff:      "\x1b[0;10m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "+\x10,\x11-\x18.\x190\xdb`\x04a\xb1f\xf8g\xf1h\xb0j\xd9k\xbfl\xdam\xc0n\xc5o~p\xc4q\xc4r\xc4s_t\xc3u\xb4v\xc1w\xc2x\xb3y\xf3z\xf2{\xe3|\xd8}\x9c~\xfe",
+		EnterAcs:     "\x1b[11m",
+		ExitAcs:      "\x1b[10m",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\x1b[D",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[L",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[H",
+		KeyBacktab:   "\x1b[Z",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/b/beterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/b/beterm/term.go
new file mode 100644
index 0000000..e6d8883
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/b/beterm/term.go
@@ -0,0 +1,57 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package beterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// BeOS Terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "beterm",
+		Columns:      80,
+		Lines:        25,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		AttrOff:      "\x1b[0;10m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?4h",
+		ExitKeypad:   "\x1b[?4l",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[m",
+		PadChar:      "\x00",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[1~",
+		KeyEnd:       "\x1b[4~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[16~",
+		KeyF7:        "\x1b[17~",
+		KeyF8:        "\x1b[18~",
+		KeyF9:        "\x1b[19~",
+		KeyF10:       "\x1b[20~",
+		KeyF11:       "\x1b[21~",
+		KeyF12:       "\x1b[22~",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/base/base.go b/vendor/github.com/gdamore/tcell/v2/terminfo/base/base.go
new file mode 100644
index 0000000..fbecdfa
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/base/base.go
@@ -0,0 +1,32 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This is just a "minimalist" set of the base terminal descriptions.
+// It should be sufficient for most applications.
+
+// Package base contains the base terminal descriptions that are likely
+// to be needed by any stock application.  It is imported by default in the
+// terminfo package, so terminal types listed here will be available to any
+// tcell application.
+package base
+
+import (
+	// The following imports just register themselves --
+	// thse are the terminal types we aggregate in this package.
+	_ "github.com/gdamore/tcell/v2/terminfo/a/ansi"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt100"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt102"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt220"
+	_ "github.com/gdamore/tcell/v2/terminfo/x/xterm"
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/c/cygwin/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/c/cygwin/term.go
new file mode 100644
index 0000000..46a0a4a
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/c/cygwin/term.go
@@ -0,0 +1,66 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package cygwin
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// ANSI emulation for Cygwin
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "cygwin",
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		AttrOff:      "\x1b[0;10m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "+\x10,\x11-\x18.\x190\xdb`\x04a\xb1f\xf8g\xf1h\xb0j\xd9k\xbfl\xdam\xc0n\xc5o~p\xc4q\xc4r\xc4s_t\xc3u\xb4v\xc1w\xc2x\xb3y\xf3z\xf2{\xe3|\xd8}\x9c~\xfe",
+		EnterAcs:     "\x1b[11m",
+		ExitAcs:      "\x1b[10m",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[1~",
+		KeyEnd:       "\x1b[4~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[[A",
+		KeyF2:        "\x1b[[B",
+		KeyF3:        "\x1b[[C",
+		KeyF4:        "\x1b[[D",
+		KeyF5:        "\x1b[[E",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/d/dtterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/d/dtterm/term.go
new file mode 100644
index 0000000..f471c80
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/d/dtterm/term.go
@@ -0,0 +1,69 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package dtterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// CDE desktop terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "dtterm",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\b",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyHelp:      "\x1b[28~",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/dynamic/dynamic.go b/vendor/github.com/gdamore/tcell/v2/terminfo/dynamic/dynamic.go
new file mode 100644
index 0000000..08ff248
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/dynamic/dynamic.go
@@ -0,0 +1,427 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The dynamic package is used to generate a terminal description dynamically,
+// using infocmp.  This is really a method of last resort, as the performance
+// will be slow, and it requires a working infocmp.  But, the hope is that it
+// will assist folks who have to deal with a terminal description that isn't
+// already built in.  This requires infocmp to be in the user's path, and to
+// support reasonably the -1 option.
+
+package dynamic
+
+import (
+	"bytes"
+	"errors"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/gdamore/tcell/v2/terminfo"
+)
+
+type termcap struct {
+	name    string
+	desc    string
+	aliases []string
+	bools   map[string]bool
+	nums    map[string]int
+	strs    map[string]string
+}
+
+func (tc *termcap) getnum(s string) int {
+	return (tc.nums[s])
+}
+
+func (tc *termcap) getflag(s string) bool {
+	return (tc.bools[s])
+}
+
+func (tc *termcap) getstr(s string) string {
+	return (tc.strs[s])
+}
+
+const (
+	none = iota
+	control
+	escaped
+)
+
+var errNotAddressable = errors.New("terminal not cursor addressable")
+
+func unescape(s string) string {
+	// Various escapes are in \x format.  Control codes are
+	// encoded as ^M (carat followed by ASCII equivalent).
+	// escapes are: \e, \E - escape
+	//  \0 NULL, \n \l \r \t \b \f \s for equivalent C escape.
+	buf := &bytes.Buffer{}
+	esc := none
+
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		switch esc {
+		case none:
+			switch c {
+			case '\\':
+				esc = escaped
+			case '^':
+				esc = control
+			default:
+				buf.WriteByte(c)
+			}
+		case control:
+			buf.WriteByte(c ^ 1<<6)
+			esc = none
+		case escaped:
+			switch c {
+			case 'E', 'e':
+				buf.WriteByte(0x1b)
+			case '0', '1', '2', '3', '4', '5', '6', '7':
+				if i+2 < len(s) && s[i+1] >= '0' && s[i+1] <= '7' && s[i+2] >= '0' && s[i+2] <= '7' {
+					buf.WriteByte(((c - '0') * 64) + ((s[i+1] - '0') * 8) + (s[i+2] - '0'))
+					i = i + 2
+				} else if c == '0' {
+					buf.WriteByte(0)
+				}
+			case 'n':
+				buf.WriteByte('\n')
+			case 'r':
+				buf.WriteByte('\r')
+			case 't':
+				buf.WriteByte('\t')
+			case 'b':
+				buf.WriteByte('\b')
+			case 'f':
+				buf.WriteByte('\f')
+			case 's':
+				buf.WriteByte(' ')
+			default:
+				buf.WriteByte(c)
+			}
+			esc = none
+		}
+	}
+	return (buf.String())
+}
+
+func (tc *termcap) setupterm(name string) error {
+	cmd := exec.Command("infocmp", "-1", name)
+	output := &bytes.Buffer{}
+	cmd.Stdout = output
+
+	tc.strs = make(map[string]string)
+	tc.bools = make(map[string]bool)
+	tc.nums = make(map[string]int)
+
+	if err := cmd.Run(); err != nil {
+		return err
+	}
+
+	// Now parse the output.
+	// We get comment lines (starting with "#"), followed by
+	// a header line that looks like "<name>|<alias>|...|<desc>"
+	// then capabilities, one per line, starting with a tab and ending
+	// with a comma and newline.
+	lines := strings.Split(output.String(), "\n")
+	for len(lines) > 0 && strings.HasPrefix(lines[0], "#") {
+		lines = lines[1:]
+	}
+
+	// Ditch trailing empty last line
+	if lines[len(lines)-1] == "" {
+		lines = lines[:len(lines)-1]
+	}
+	header := lines[0]
+	if strings.HasSuffix(header, ",") {
+		header = header[:len(header)-1]
+	}
+	names := strings.Split(header, "|")
+	tc.name = names[0]
+	names = names[1:]
+	if len(names) > 0 {
+		tc.desc = names[len(names)-1]
+		names = names[:len(names)-1]
+	}
+	tc.aliases = names
+	for _, val := range lines[1:] {
+		if (!strings.HasPrefix(val, "\t")) ||
+			(!strings.HasSuffix(val, ",")) {
+			return (errors.New("malformed infocmp: " + val))
+		}
+
+		val = val[1:]
+		val = val[:len(val)-1]
+
+		if k := strings.SplitN(val, "=", 2); len(k) == 2 {
+			tc.strs[k[0]] = unescape(k[1])
+		} else if k := strings.SplitN(val, "#", 2); len(k) == 2 {
+			u, err := strconv.ParseUint(k[1], 0, 0)
+			if err != nil {
+				return (err)
+			}
+			tc.nums[k[0]] = int(u)
+		} else {
+			tc.bools[val] = true
+		}
+	}
+	return nil
+}
+
+// LoadTerminfo creates a Terminfo by for named terminal by attempting to parse
+// the output from infocmp.  This returns the terminfo entry, a description of
+// the terminal, and either nil or an error.
+func LoadTerminfo(name string) (*terminfo.Terminfo, string, error) {
+	var tc termcap
+	if err := tc.setupterm(name); err != nil {
+		if err != nil {
+			return nil, "", err
+		}
+	}
+	t := &terminfo.Terminfo{}
+	// If this is an alias record, then just emit the alias
+	t.Name = tc.name
+	if t.Name != name {
+		return t, "", nil
+	}
+	t.Aliases = tc.aliases
+	t.Colors = tc.getnum("colors")
+	t.Columns = tc.getnum("cols")
+	t.Lines = tc.getnum("lines")
+	t.Bell = tc.getstr("bel")
+	t.Clear = tc.getstr("clear")
+	t.EnterCA = tc.getstr("smcup")
+	t.ExitCA = tc.getstr("rmcup")
+	t.ShowCursor = tc.getstr("cnorm")
+	t.HideCursor = tc.getstr("civis")
+	t.AttrOff = tc.getstr("sgr0")
+	t.Underline = tc.getstr("smul")
+	t.Bold = tc.getstr("bold")
+	t.Blink = tc.getstr("blink")
+	t.Dim = tc.getstr("dim")
+	t.Italic = tc.getstr("sitm")
+	t.Reverse = tc.getstr("rev")
+	t.EnterKeypad = tc.getstr("smkx")
+	t.ExitKeypad = tc.getstr("rmkx")
+	t.SetFg = tc.getstr("setaf")
+	t.SetBg = tc.getstr("setab")
+	t.SetCursor = tc.getstr("cup")
+	t.CursorBack1 = tc.getstr("cub1")
+	t.CursorUp1 = tc.getstr("cuu1")
+	t.KeyF1 = tc.getstr("kf1")
+	t.KeyF2 = tc.getstr("kf2")
+	t.KeyF3 = tc.getstr("kf3")
+	t.KeyF4 = tc.getstr("kf4")
+	t.KeyF5 = tc.getstr("kf5")
+	t.KeyF6 = tc.getstr("kf6")
+	t.KeyF7 = tc.getstr("kf7")
+	t.KeyF8 = tc.getstr("kf8")
+	t.KeyF9 = tc.getstr("kf9")
+	t.KeyF10 = tc.getstr("kf10")
+	t.KeyF11 = tc.getstr("kf11")
+	t.KeyF12 = tc.getstr("kf12")
+	t.KeyF13 = tc.getstr("kf13")
+	t.KeyF14 = tc.getstr("kf14")
+	t.KeyF15 = tc.getstr("kf15")
+	t.KeyF16 = tc.getstr("kf16")
+	t.KeyF17 = tc.getstr("kf17")
+	t.KeyF18 = tc.getstr("kf18")
+	t.KeyF19 = tc.getstr("kf19")
+	t.KeyF20 = tc.getstr("kf20")
+	t.KeyF21 = tc.getstr("kf21")
+	t.KeyF22 = tc.getstr("kf22")
+	t.KeyF23 = tc.getstr("kf23")
+	t.KeyF24 = tc.getstr("kf24")
+	t.KeyF25 = tc.getstr("kf25")
+	t.KeyF26 = tc.getstr("kf26")
+	t.KeyF27 = tc.getstr("kf27")
+	t.KeyF28 = tc.getstr("kf28")
+	t.KeyF29 = tc.getstr("kf29")
+	t.KeyF30 = tc.getstr("kf30")
+	t.KeyF31 = tc.getstr("kf31")
+	t.KeyF32 = tc.getstr("kf32")
+	t.KeyF33 = tc.getstr("kf33")
+	t.KeyF34 = tc.getstr("kf34")
+	t.KeyF35 = tc.getstr("kf35")
+	t.KeyF36 = tc.getstr("kf36")
+	t.KeyF37 = tc.getstr("kf37")
+	t.KeyF38 = tc.getstr("kf38")
+	t.KeyF39 = tc.getstr("kf39")
+	t.KeyF40 = tc.getstr("kf40")
+	t.KeyF41 = tc.getstr("kf41")
+	t.KeyF42 = tc.getstr("kf42")
+	t.KeyF43 = tc.getstr("kf43")
+	t.KeyF44 = tc.getstr("kf44")
+	t.KeyF45 = tc.getstr("kf45")
+	t.KeyF46 = tc.getstr("kf46")
+	t.KeyF47 = tc.getstr("kf47")
+	t.KeyF48 = tc.getstr("kf48")
+	t.KeyF49 = tc.getstr("kf49")
+	t.KeyF50 = tc.getstr("kf50")
+	t.KeyF51 = tc.getstr("kf51")
+	t.KeyF52 = tc.getstr("kf52")
+	t.KeyF53 = tc.getstr("kf53")
+	t.KeyF54 = tc.getstr("kf54")
+	t.KeyF55 = tc.getstr("kf55")
+	t.KeyF56 = tc.getstr("kf56")
+	t.KeyF57 = tc.getstr("kf57")
+	t.KeyF58 = tc.getstr("kf58")
+	t.KeyF59 = tc.getstr("kf59")
+	t.KeyF60 = tc.getstr("kf60")
+	t.KeyF61 = tc.getstr("kf61")
+	t.KeyF62 = tc.getstr("kf62")
+	t.KeyF63 = tc.getstr("kf63")
+	t.KeyF64 = tc.getstr("kf64")
+	t.KeyInsert = tc.getstr("kich1")
+	t.KeyDelete = tc.getstr("kdch1")
+	t.KeyBackspace = tc.getstr("kbs")
+	t.KeyHome = tc.getstr("khome")
+	t.KeyEnd = tc.getstr("kend")
+	t.KeyUp = tc.getstr("kcuu1")
+	t.KeyDown = tc.getstr("kcud1")
+	t.KeyRight = tc.getstr("kcuf1")
+	t.KeyLeft = tc.getstr("kcub1")
+	t.KeyPgDn = tc.getstr("knp")
+	t.KeyPgUp = tc.getstr("kpp")
+	t.KeyBacktab = tc.getstr("kcbt")
+	t.KeyExit = tc.getstr("kext")
+	t.KeyCancel = tc.getstr("kcan")
+	t.KeyPrint = tc.getstr("kprt")
+	t.KeyHelp = tc.getstr("khlp")
+	t.KeyClear = tc.getstr("kclr")
+	t.AltChars = tc.getstr("acsc")
+	t.EnterAcs = tc.getstr("smacs")
+	t.ExitAcs = tc.getstr("rmacs")
+	t.EnableAcs = tc.getstr("enacs")
+	t.Mouse = tc.getstr("kmous")
+	t.KeyShfRight = tc.getstr("kRIT")
+	t.KeyShfLeft = tc.getstr("kLFT")
+	t.KeyShfHome = tc.getstr("kHOM")
+	t.KeyShfEnd = tc.getstr("kEND")
+
+	// Terminfo lacks descriptions for a bunch of modified keys,
+	// but modern XTerm and emulators often have them.  Let's add them,
+	// if the shifted right and left arrows are defined.
+	if t.KeyShfRight == "\x1b[1;2C" && t.KeyShfLeft == "\x1b[1;2D" {
+		t.KeyShfUp = "\x1b[1;2A"
+		t.KeyShfDown = "\x1b[1;2B"
+		t.KeyMetaUp = "\x1b[1;9A"
+		t.KeyMetaDown = "\x1b[1;9B"
+		t.KeyMetaRight = "\x1b[1;9C"
+		t.KeyMetaLeft = "\x1b[1;9D"
+		t.KeyAltUp = "\x1b[1;3A"
+		t.KeyAltDown = "\x1b[1;3B"
+		t.KeyAltRight = "\x1b[1;3C"
+		t.KeyAltLeft = "\x1b[1;3D"
+		t.KeyCtrlUp = "\x1b[1;5A"
+		t.KeyCtrlDown = "\x1b[1;5B"
+		t.KeyCtrlRight = "\x1b[1;5C"
+		t.KeyCtrlLeft = "\x1b[1;5D"
+		t.KeyAltShfUp = "\x1b[1;4A"
+		t.KeyAltShfDown = "\x1b[1;4B"
+		t.KeyAltShfRight = "\x1b[1;4C"
+		t.KeyAltShfLeft = "\x1b[1;4D"
+
+		t.KeyMetaShfUp = "\x1b[1;10A"
+		t.KeyMetaShfDown = "\x1b[1;10B"
+		t.KeyMetaShfRight = "\x1b[1;10C"
+		t.KeyMetaShfLeft = "\x1b[1;10D"
+
+		t.KeyCtrlShfUp = "\x1b[1;6A"
+		t.KeyCtrlShfDown = "\x1b[1;6B"
+		t.KeyCtrlShfRight = "\x1b[1;6C"
+		t.KeyCtrlShfLeft = "\x1b[1;6D"
+
+		t.KeyShfPgUp = "\x1b[5;2~"
+		t.KeyShfPgDn = "\x1b[6;2~"
+	}
+	// And also for Home and End
+	if t.KeyShfHome == "\x1b[1;2H" && t.KeyShfEnd == "\x1b[1;2F" {
+		t.KeyCtrlHome = "\x1b[1;5H"
+		t.KeyCtrlEnd = "\x1b[1;5F"
+		t.KeyAltHome = "\x1b[1;9H"
+		t.KeyAltEnd = "\x1b[1;9F"
+		t.KeyCtrlShfHome = "\x1b[1;6H"
+		t.KeyCtrlShfEnd = "\x1b[1;6F"
+		t.KeyAltShfHome = "\x1b[1;4H"
+		t.KeyAltShfEnd = "\x1b[1;4F"
+		t.KeyMetaShfHome = "\x1b[1;10H"
+		t.KeyMetaShfEnd = "\x1b[1;10F"
+	}
+
+	// And the same thing for rxvt and workalikes (Eterm, aterm, etc.)
+	// It seems that urxvt at least send escaped as ALT prefix for these,
+	// although some places seem to indicate a separate ALT key sesquence.
+	if t.KeyShfRight == "\x1b[c" && t.KeyShfLeft == "\x1b[d" {
+		t.KeyShfUp = "\x1b[a"
+		t.KeyShfDown = "\x1b[b"
+		t.KeyCtrlUp = "\x1b[Oa"
+		t.KeyCtrlDown = "\x1b[Ob"
+		t.KeyCtrlRight = "\x1b[Oc"
+		t.KeyCtrlLeft = "\x1b[Od"
+	}
+	if t.KeyShfHome == "\x1b[7$" && t.KeyShfEnd == "\x1b[8$" {
+		t.KeyCtrlHome = "\x1b[7^"
+		t.KeyCtrlEnd = "\x1b[8^"
+	}
+
+	// Technically the RGB flag that is provided for xterm-direct is not
+	// quite right.  The problem is that the -direct flag that was introduced
+	// with ncurses 6.1 requires a parsing for the parameters that we lack.
+	// For this case we'll just assume it's XTerm compatible.  Someday this
+	// may be incorrect, but right now it is correct, and nobody uses it
+	// anyway.
+	if tc.getflag("Tc") {
+		// This presumes XTerm 24-bit true color.
+		t.TrueColor = true
+	} else if tc.getflag("RGB") {
+		// This is for xterm-direct, which uses a different scheme entirely.
+		// (ncurses went a very different direction from everyone else, and
+		// so it's unlikely anything is using this definition.)
+		t.TrueColor = true
+		t.SetBg = "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m"
+		t.SetFg = "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m"
+	}
+
+	// We only support colors in ANSI 8 or 256 color mode.
+	if t.Colors < 8 || t.SetFg == "" {
+		t.Colors = 0
+	}
+	if t.SetCursor == "" {
+		return nil, "", errNotAddressable
+	}
+
+	// For padding, we lookup the pad char.  If that isn't present,
+	// and npc is *not* set, then we assume a null byte.
+	t.PadChar = tc.getstr("pad")
+	if t.PadChar == "" {
+		if !tc.getflag("npc") {
+			t.PadChar = "\u0000"
+		}
+	}
+
+	// For terminals that use "standard" SGR sequences, lets combine the
+	// foreground and background together.
+	if strings.HasPrefix(t.SetFg, "\x1b[") &&
+		strings.HasPrefix(t.SetBg, "\x1b[") &&
+		strings.HasSuffix(t.SetFg, "m") &&
+		strings.HasSuffix(t.SetBg, "m") {
+		fg := t.SetFg[:len(t.SetFg)-1]
+		r := regexp.MustCompile("%p1")
+		bg := r.ReplaceAllString(t.SetBg[2:], "%p2")
+		t.SetFgBg = fg + ";" + bg
+	}
+
+	return t, tc.desc, nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/e/emacs/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/e/emacs/term.go
new file mode 100644
index 0000000..b0b9b47
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/e/emacs/term.go
@@ -0,0 +1,63 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package emacs
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// gnu emacs term.el terminal emulation
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:        "eterm",
+		Columns:     80,
+		Lines:       24,
+		Bell:        "\a",
+		Clear:       "\x1b[H\x1b[J",
+		EnterCA:     "\x1b7\x1b[?47h",
+		ExitCA:      "\x1b[2J\x1b[?47l\x1b8",
+		AttrOff:     "\x1b[m",
+		Underline:   "\x1b[4m",
+		Bold:        "\x1b[1m",
+		Reverse:     "\x1b[7m",
+		PadChar:     "\x00",
+		SetCursor:   "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1: "\b",
+		CursorUp1:   "\x1b[A",
+		AutoMargin:  true,
+	})
+
+	// Emacs term.el terminal emulator term-protocol-version 0.96
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "eterm-color",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		AttrOff:      "\x1b[m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[%p1%{30}%+%dm",
+		SetBg:        "\x1b[%p1%'('%+%dm",
+		SetFgBg:      "\x1b[%p1%{30}%+%d;%p2%'('%+%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[1~",
+		KeyEnd:       "\x1b[4~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/extended/extended.go b/vendor/github.com/gdamore/tcell/v2/terminfo/extended/extended.go
new file mode 100644
index 0000000..c69bef1
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/extended/extended.go
@@ -0,0 +1,58 @@
+// Copyright 2020 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package extended contains an extended set of terminal descriptions.
+// Applications desiring to have a better chance of Just Working by
+// default should include this package.  This will significantly increase
+// the size of the program.
+package extended
+
+import (
+	// The following imports just register themselves --
+	// these are the terminal types we aggregate in this package.
+	_ "github.com/gdamore/tcell/v2/terminfo/a/aixterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/a/alacritty"
+	_ "github.com/gdamore/tcell/v2/terminfo/a/ansi"
+	_ "github.com/gdamore/tcell/v2/terminfo/b/beterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/c/cygwin"
+	_ "github.com/gdamore/tcell/v2/terminfo/d/dtterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/e/emacs"
+	_ "github.com/gdamore/tcell/v2/terminfo/f/foot"
+	_ "github.com/gdamore/tcell/v2/terminfo/g/gnome"
+	_ "github.com/gdamore/tcell/v2/terminfo/h/hpterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/k/konsole"
+	_ "github.com/gdamore/tcell/v2/terminfo/k/kterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/l/linux"
+	_ "github.com/gdamore/tcell/v2/terminfo/p/pcansi"
+	_ "github.com/gdamore/tcell/v2/terminfo/r/rxvt"
+	_ "github.com/gdamore/tcell/v2/terminfo/s/screen"
+	_ "github.com/gdamore/tcell/v2/terminfo/s/simpleterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/s/sun"
+	_ "github.com/gdamore/tcell/v2/terminfo/t/termite"
+	_ "github.com/gdamore/tcell/v2/terminfo/t/tmux"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt100"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt102"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt220"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt320"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt400"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt420"
+	_ "github.com/gdamore/tcell/v2/terminfo/v/vt52"
+	_ "github.com/gdamore/tcell/v2/terminfo/w/wy50"
+	_ "github.com/gdamore/tcell/v2/terminfo/w/wy60"
+	_ "github.com/gdamore/tcell/v2/terminfo/w/wy99_ansi"
+	_ "github.com/gdamore/tcell/v2/terminfo/x/xfce"
+	_ "github.com/gdamore/tcell/v2/terminfo/x/xterm"
+	_ "github.com/gdamore/tcell/v2/terminfo/x/xterm_kitty"
+	_ "github.com/gdamore/tcell/v2/terminfo/x/xterm_termite"
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/f/foot/foot.go b/vendor/github.com/gdamore/tcell/v2/terminfo/f/foot/foot.go
new file mode 100644
index 0000000..fb734cb
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/f/foot/foot.go
@@ -0,0 +1,69 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package foot
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// foot terminal emulator
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "foot",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:       "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:   "\x1b[?12l\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b(B\x1b[m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Italic:       "\x1b[3m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38:5:%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48:5:%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38:5:%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48:5:%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		AltChars:     "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1bOH",
+		KeyEnd:       "\x1bOF",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		Modifiers:    1,
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/g/gnome/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/g/gnome/term.go
new file mode 100644
index 0000000..e85a3a3
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/g/gnome/term.go
@@ -0,0 +1,130 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package gnome
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// GNOME Terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "gnome",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[0m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Italic:       "\x1b[3m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1bOH",
+		KeyEnd:       "\x1bOF",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		Modifiers:    1,
+		AutoMargin:   true,
+	})
+
+	// GNOME Terminal with xterm 256-colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "gnome-256color",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[0m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Italic:       "\x1b[3m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1bOH",
+		KeyEnd:       "\x1bOF",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		Modifiers:    1,
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/gen.sh b/vendor/github.com/gdamore/tcell/v2/terminfo/gen.sh
new file mode 100644
index 0000000..2fc0611
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/gen.sh
@@ -0,0 +1,18 @@
+while read line
+do
+        case "$line" in
+        *'|'*)
+                alias=${line#*|}
+                line=${line%|*}
+                ;;
+        *)
+                alias=${line%%,*}
+                ;;
+        esac
+
+        alias=${alias//-/_}
+        direc=${alias:0:1}
+
+        mkdir -p ${direc}/${alias}
+        go run mkinfo.go -P ${alias} -go ${direc}/${alias}/term.go ${line//,/ }
+done < models.txt
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/h/hpterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/h/hpterm/term.go
new file mode 100644
index 0000000..123bfb9
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/h/hpterm/term.go
@@ -0,0 +1,51 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package hpterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// hp X11 terminal emulator
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "hpterm",
+		Aliases:      []string{"X-hpterm"},
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b&a0y0C\x1bJ",
+		AttrOff:      "\x1b&d@\x0f",
+		Underline:    "\x1b&dD",
+		Bold:         "\x1b&dB",
+		Dim:          "\x1b&dH",
+		Reverse:      "\x1b&dB",
+		EnterKeypad:  "\x1b&s1A",
+		ExitKeypad:   "\x1b&s0A",
+		PadChar:      "\x00",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		SetCursor:    "\x1b&a%p1%dy%p2%dC",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1bA",
+		KeyUp:        "\x1bA",
+		KeyDown:      "\x1bB",
+		KeyRight:     "\x1bC",
+		KeyLeft:      "\x1bD",
+		KeyInsert:    "\x1bQ",
+		KeyDelete:    "\x1bP",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1bh",
+		KeyPgUp:      "\x1bV",
+		KeyPgDn:      "\x1bU",
+		KeyF1:        "\x1bp",
+		KeyF2:        "\x1bq",
+		KeyF3:        "\x1br",
+		KeyF4:        "\x1bs",
+		KeyF5:        "\x1bt",
+		KeyF6:        "\x1bu",
+		KeyF7:        "\x1bv",
+		KeyF8:        "\x1bw",
+		KeyClear:     "\x1bJ",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/k/konsole/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/k/konsole/term.go
new file mode 100644
index 0000000..236db9d
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/k/konsole/term.go
@@ -0,0 +1,130 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package konsole
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// KDE console window
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "konsole",
+		Columns:       80,
+		Lines:         24,
+		Colors:        8,
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b7\x1b[?47h",
+		ExitCA:        "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:    "\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b[0m\x0f",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[3%p1%dm",
+		SetBg:         "\x1b[4%p1%dm",
+		SetFgBg:       "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x0e",
+		ExitAcs:       "\x0f",
+		EnableAcs:     "\x1b)0",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[<",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+
+	// KDE console window with xterm 256-colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "konsole-256color",
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b7\x1b[?47h",
+		ExitCA:        "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:    "\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b[0m\x0f",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x0e",
+		ExitAcs:       "\x0f",
+		EnableAcs:     "\x1b)0",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[<",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/k/kterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/k/kterm/term.go
new file mode 100644
index 0000000..eedbe6d
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/k/kterm/term.go
@@ -0,0 +1,68 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package kterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// kterm kanji terminal emulator (X window system)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "kterm",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		AttrOff:      "\x1b[m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aajjkkllmmnnooppqqrrssttuuvvwwxx~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/l/linux/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/l/linux/term.go
new file mode 100644
index 0000000..8783b4c
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/l/linux/term.go
@@ -0,0 +1,71 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package linux
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// linux console
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "linux",
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		ShowCursor:   "\x1b[?25h\x1b[?0c",
+		HideCursor:   "\x1b[?25l\x1b[?1c",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "++,,--..00__``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}c~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[1~",
+		KeyEnd:       "\x1b[4~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[[A",
+		KeyF2:        "\x1b[[B",
+		KeyF3:        "\x1b[[C",
+		KeyF4:        "\x1b[[D",
+		KeyF5:        "\x1b[[E",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyBacktab:   "\x1b[Z",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/models.txt b/vendor/github.com/gdamore/tcell/v2/terminfo/models.txt
new file mode 100644
index 0000000..f0db812
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/models.txt
@@ -0,0 +1,31 @@
+aixterm
+alacritty
+ansi
+beterm
+cygwin
+dtterm
+eterm,eterm-color|emacs
+gnome,gnome-256color
+hpterm
+konsole,konsole-256color
+kterm
+linux
+pcansi
+rxvt,rxvt-256color,rxvt-88color,rxvt-unicode,rxvt-unicode-256color
+screen,screen-256color
+st,st-256color|simpleterm
+termite
+tmux
+vt52
+vt100
+vt102
+vt220
+vt320
+vt400
+vt420
+wy50
+wy60
+wy99-ansi,wy99a-ansi
+xfce
+xterm,xterm-88color,xterm-256color
+xterm-kitty
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/p/pcansi/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/p/pcansi/term.go
new file mode 100644
index 0000000..9e89c19
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/p/pcansi/term.go
@@ -0,0 +1,41 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package pcansi
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// ibm-pc terminal programs claiming to be ansi
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "pcansi",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		AttrOff:      "\x1b[0;10m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[37;40m",
+		PadChar:      "\x00",
+		AltChars:     "+\x10,\x11-\x18.\x190\xdb`\x04a\xb1f\xf8g\xf1h\xb0j\xd9k\xbfl\xdam\xc0n\xc5o~p\xc4q\xc4r\xc4s_t\xc3u\xb4v\xc1w\xc2x\xb3y\xf3z\xf2{\xe3|\xd8}\x9c~\xfe",
+		EnterAcs:     "\x1b[12m",
+		ExitAcs:      "\x1b[10m",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\x1b[D",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[H",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/r/rxvt/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/r/rxvt/term.go
new file mode 100644
index 0000000..6fa9e7f
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/r/rxvt/term.go
@@ -0,0 +1,485 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package rxvt
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// rxvt terminal emulator (X Window System)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "rxvt",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b=",
+		ExitKeypad:   "\x1b>",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[7~",
+		KeyEnd:       "\x1b[8~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyF21:       "\x1b[23$",
+		KeyF22:       "\x1b[24$",
+		KeyF23:       "\x1b[11^",
+		KeyF24:       "\x1b[12^",
+		KeyF25:       "\x1b[13^",
+		KeyF26:       "\x1b[14^",
+		KeyF27:       "\x1b[15^",
+		KeyF28:       "\x1b[17^",
+		KeyF29:       "\x1b[18^",
+		KeyF30:       "\x1b[19^",
+		KeyF31:       "\x1b[20^",
+		KeyF32:       "\x1b[21^",
+		KeyF33:       "\x1b[23^",
+		KeyF34:       "\x1b[24^",
+		KeyF35:       "\x1b[25^",
+		KeyF36:       "\x1b[26^",
+		KeyF37:       "\x1b[28^",
+		KeyF38:       "\x1b[29^",
+		KeyF39:       "\x1b[31^",
+		KeyF40:       "\x1b[32^",
+		KeyF41:       "\x1b[33^",
+		KeyF42:       "\x1b[34^",
+		KeyF43:       "\x1b[23@",
+		KeyF44:       "\x1b[24@",
+		KeyBacktab:   "\x1b[Z",
+		KeyShfLeft:   "\x1b[d",
+		KeyShfRight:  "\x1b[c",
+		KeyShfUp:     "\x1b[a",
+		KeyShfDown:   "\x1b[b",
+		KeyShfHome:   "\x1b[7$",
+		KeyShfEnd:    "\x1b[8$",
+		KeyShfDelete: "\x1b[3$",
+		KeyCtrlUp:    "\x1b[Oa",
+		KeyCtrlDown:  "\x1b[Ob",
+		KeyCtrlRight: "\x1b[Oc",
+		KeyCtrlLeft:  "\x1b[Od",
+		KeyCtrlHome:  "\x1b[7^",
+		KeyCtrlEnd:   "\x1b[8^",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+
+	// rxvt 2.7.9 with xterm 256-colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "rxvt-256color",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b=",
+		ExitKeypad:   "\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[7~",
+		KeyEnd:       "\x1b[8~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyF21:       "\x1b[23$",
+		KeyF22:       "\x1b[24$",
+		KeyF23:       "\x1b[11^",
+		KeyF24:       "\x1b[12^",
+		KeyF25:       "\x1b[13^",
+		KeyF26:       "\x1b[14^",
+		KeyF27:       "\x1b[15^",
+		KeyF28:       "\x1b[17^",
+		KeyF29:       "\x1b[18^",
+		KeyF30:       "\x1b[19^",
+		KeyF31:       "\x1b[20^",
+		KeyF32:       "\x1b[21^",
+		KeyF33:       "\x1b[23^",
+		KeyF34:       "\x1b[24^",
+		KeyF35:       "\x1b[25^",
+		KeyF36:       "\x1b[26^",
+		KeyF37:       "\x1b[28^",
+		KeyF38:       "\x1b[29^",
+		KeyF39:       "\x1b[31^",
+		KeyF40:       "\x1b[32^",
+		KeyF41:       "\x1b[33^",
+		KeyF42:       "\x1b[34^",
+		KeyF43:       "\x1b[23@",
+		KeyF44:       "\x1b[24@",
+		KeyBacktab:   "\x1b[Z",
+		KeyShfLeft:   "\x1b[d",
+		KeyShfRight:  "\x1b[c",
+		KeyShfUp:     "\x1b[a",
+		KeyShfDown:   "\x1b[b",
+		KeyShfHome:   "\x1b[7$",
+		KeyShfEnd:    "\x1b[8$",
+		KeyShfDelete: "\x1b[3$",
+		KeyCtrlUp:    "\x1b[Oa",
+		KeyCtrlDown:  "\x1b[Ob",
+		KeyCtrlRight: "\x1b[Oc",
+		KeyCtrlLeft:  "\x1b[Od",
+		KeyCtrlHome:  "\x1b[7^",
+		KeyCtrlEnd:   "\x1b[8^",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+
+	// rxvt 2.7.9 with xterm 88-colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "rxvt-88color",
+		Columns:      80,
+		Lines:        24,
+		Colors:       88,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b=",
+		ExitKeypad:   "\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[7~",
+		KeyEnd:       "\x1b[8~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyF21:       "\x1b[23$",
+		KeyF22:       "\x1b[24$",
+		KeyF23:       "\x1b[11^",
+		KeyF24:       "\x1b[12^",
+		KeyF25:       "\x1b[13^",
+		KeyF26:       "\x1b[14^",
+		KeyF27:       "\x1b[15^",
+		KeyF28:       "\x1b[17^",
+		KeyF29:       "\x1b[18^",
+		KeyF30:       "\x1b[19^",
+		KeyF31:       "\x1b[20^",
+		KeyF32:       "\x1b[21^",
+		KeyF33:       "\x1b[23^",
+		KeyF34:       "\x1b[24^",
+		KeyF35:       "\x1b[25^",
+		KeyF36:       "\x1b[26^",
+		KeyF37:       "\x1b[28^",
+		KeyF38:       "\x1b[29^",
+		KeyF39:       "\x1b[31^",
+		KeyF40:       "\x1b[32^",
+		KeyF41:       "\x1b[33^",
+		KeyF42:       "\x1b[34^",
+		KeyF43:       "\x1b[23@",
+		KeyF44:       "\x1b[24@",
+		KeyBacktab:   "\x1b[Z",
+		KeyShfLeft:   "\x1b[d",
+		KeyShfRight:  "\x1b[c",
+		KeyShfUp:     "\x1b[a",
+		KeyShfDown:   "\x1b[b",
+		KeyShfHome:   "\x1b[7$",
+		KeyShfEnd:    "\x1b[8$",
+		KeyShfDelete: "\x1b[3$",
+		KeyCtrlUp:    "\x1b[Oa",
+		KeyCtrlDown:  "\x1b[Ob",
+		KeyCtrlRight: "\x1b[Oc",
+		KeyCtrlLeft:  "\x1b[Od",
+		KeyCtrlHome:  "\x1b[7^",
+		KeyCtrlEnd:   "\x1b[8^",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+
+	// rxvt-unicode terminal (X Window System)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "rxvt-unicode",
+		Columns:      80,
+		Lines:        24,
+		Colors:       88,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b[?1049h",
+		ExitCA:       "\x1b[r\x1b[?1049l",
+		ShowCursor:   "\x1b[?12l\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Italic:       "\x1b[3m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b=",
+		ExitKeypad:   "\x1b>",
+		SetFg:        "\x1b[38;5;%p1%dm",
+		SetBg:        "\x1b[48;5;%p1%dm",
+		SetFgBg:      "\x1b[38;5;%p1%d;48;5;%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		AltChars:     "+C,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[7~",
+		KeyEnd:       "\x1b[8~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyBacktab:   "\x1b[Z",
+		KeyShfLeft:   "\x1b[d",
+		KeyShfRight:  "\x1b[c",
+		KeyShfUp:     "\x1b[a",
+		KeyShfDown:   "\x1b[b",
+		KeyShfHome:   "\x1b[7$",
+		KeyShfEnd:    "\x1b[8$",
+		KeyShfInsert: "\x1b[2$",
+		KeyShfDelete: "\x1b[3$",
+		KeyCtrlUp:    "\x1b[Oa",
+		KeyCtrlDown:  "\x1b[Ob",
+		KeyCtrlRight: "\x1b[Oc",
+		KeyCtrlLeft:  "\x1b[Od",
+		KeyCtrlHome:  "\x1b[7^",
+		KeyCtrlEnd:   "\x1b[8^",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+
+	// rxvt-unicode terminal with 256 colors (X Window System)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "rxvt-unicode-256color",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b[?1049h",
+		ExitCA:       "\x1b[r\x1b[?1049l",
+		ShowCursor:   "\x1b[?12l\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Italic:       "\x1b[3m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b=",
+		ExitKeypad:   "\x1b>",
+		SetFg:        "\x1b[38;5;%p1%dm",
+		SetBg:        "\x1b[48;5;%p1%dm",
+		SetFgBg:      "\x1b[38;5;%p1%d;48;5;%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		AltChars:     "+C,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[7~",
+		KeyEnd:       "\x1b[8~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1b[11~",
+		KeyF2:        "\x1b[12~",
+		KeyF3:        "\x1b[13~",
+		KeyF4:        "\x1b[14~",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyBacktab:   "\x1b[Z",
+		KeyShfLeft:   "\x1b[d",
+		KeyShfRight:  "\x1b[c",
+		KeyShfUp:     "\x1b[a",
+		KeyShfDown:   "\x1b[b",
+		KeyShfHome:   "\x1b[7$",
+		KeyShfEnd:    "\x1b[8$",
+		KeyShfInsert: "\x1b[2$",
+		KeyShfDelete: "\x1b[3$",
+		KeyCtrlUp:    "\x1b[Oa",
+		KeyCtrlDown:  "\x1b[Ob",
+		KeyCtrlRight: "\x1b[Oc",
+		KeyCtrlLeft:  "\x1b[Od",
+		KeyCtrlHome:  "\x1b[7^",
+		KeyCtrlEnd:   "\x1b[8^",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/s/screen/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/s/screen/term.go
new file mode 100644
index 0000000..d95d636
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/s/screen/term.go
@@ -0,0 +1,128 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package screen
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// VT 100/ANSI X3.64 virtual terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "screen",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		EnterCA:      "\x1b[?1049h",
+		ExitCA:       "\x1b[?1049l",
+		ShowCursor:   "\x1b[34h\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1bM",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[1~",
+		KeyEnd:       "\x1b[4~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		AutoMargin:   true,
+	})
+
+	// GNU Screen with 256 colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "screen-256color",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		EnterCA:      "\x1b[?1049h",
+		ExitCA:       "\x1b[?1049l",
+		ShowCursor:   "\x1b[34h\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1bM",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[1~",
+		KeyEnd:       "\x1b[4~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/s/simpleterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/s/simpleterm/term.go
new file mode 100644
index 0000000..f633f29
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/s/simpleterm/term.go
@@ -0,0 +1,136 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package simpleterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	//  simpleterm
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "st",
+		Columns:       80,
+		Lines:         24,
+		Colors:        8,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h",
+		ExitCA:        "\x1b[?1049l",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b[0m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[3%p1%dm",
+		SetBg:         "\x1b[4%p1%dm",
+		SetFgBg:       "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "+C,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		EnableAcs:     "\x1b)0",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1b[1~",
+		KeyEnd:        "\x1b[4~",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyClear:      "\x1b[3;5~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		TrueColor:     true,
+		AutoMargin:    true,
+	})
+
+	//  simpleterm with 256 colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "st-256color",
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h",
+		ExitCA:        "\x1b[?1049l",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b[0m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "+C,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		EnableAcs:     "\x1b)0",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1b[1~",
+		KeyEnd:        "\x1b[4~",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyClear:      "\x1b[3;5~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		TrueColor:     true,
+		AutoMargin:    true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/s/sun/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/s/sun/term.go
new file mode 100644
index 0000000..16cb96c
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/s/sun/term.go
@@ -0,0 +1,112 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This terminal definition is hand-coded, as the default terminfo for
+// this terminal is busted with respect to color.  Unlike pretty much every
+// other ANSI compliant terminal, this terminal cannot combine foreground and
+// background escapes.  The default terminfo also only provides escapes for
+// 16-bit color.
+
+package sun
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// Sun Microsystems Inc. workstation console
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "sun",
+		Aliases:      []string{"sun1", "sun2"},
+		Columns:      80,
+		Lines:        34,
+		Bell:         "\a",
+		Clear:        "\f",
+		AttrOff:      "\x1b[m",
+		Reverse:      "\x1b[7m",
+		PadChar:      "\x00",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[247z",
+		KeyDelete:    "\u007f",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[214z",
+		KeyEnd:       "\x1b[220z",
+		KeyPgUp:      "\x1b[216z",
+		KeyPgDn:      "\x1b[222z",
+		KeyF1:        "\x1b[224z",
+		KeyF2:        "\x1b[225z",
+		KeyF3:        "\x1b[226z",
+		KeyF4:        "\x1b[227z",
+		KeyF5:        "\x1b[228z",
+		KeyF6:        "\x1b[229z",
+		KeyF7:        "\x1b[230z",
+		KeyF8:        "\x1b[231z",
+		KeyF9:        "\x1b[232z",
+		KeyF10:       "\x1b[233z",
+		KeyF11:       "\x1b[234z",
+		KeyF12:       "\x1b[235z",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+
+	// Sun Microsystems Workstation console with color support (IA systems)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "sun-color",
+		Columns:      80,
+		Lines:        34,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\f",
+		AttrOff:      "\x1b[m",
+		Bold:         "\x1b[1m",
+		Reverse:      "\x1b[7m",
+		SetFg:        "\x1b[38;5;%p1%dm",
+		SetBg:        "\x1b[48;5;%p1%dm",
+		ResetFgBg:    "\x1b[0m",
+		PadChar:      "\x00",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[247z",
+		KeyDelete:    "\u007f",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1b[214z",
+		KeyEnd:       "\x1b[220z",
+		KeyPgUp:      "\x1b[216z",
+		KeyPgDn:      "\x1b[222z",
+		KeyF1:        "\x1b[224z",
+		KeyF2:        "\x1b[225z",
+		KeyF3:        "\x1b[226z",
+		KeyF4:        "\x1b[227z",
+		KeyF5:        "\x1b[228z",
+		KeyF6:        "\x1b[229z",
+		KeyF7:        "\x1b[230z",
+		KeyF8:        "\x1b[231z",
+		KeyF9:        "\x1b[232z",
+		KeyF10:       "\x1b[233z",
+		KeyF11:       "\x1b[234z",
+		KeyF12:       "\x1b[235z",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/t/termite/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/t/termite/term.go
new file mode 100644
index 0000000..593d385
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/t/termite/term.go
@@ -0,0 +1,67 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package termite
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// VTE-based terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "termite",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b[?1049h",
+		ExitCA:       "\x1b[?1049l",
+		ShowCursor:   "\x1b[?12l\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b(B\x1b[m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Italic:       "\x1b[3m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		AltChars:     "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1bOH",
+		KeyEnd:       "\x1bOF",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		Modifiers:    1,
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/t/tmux/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/t/tmux/term.go
new file mode 100644
index 0000000..44975d6
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/t/tmux/term.go
@@ -0,0 +1,71 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package tmux
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// tmux terminal multiplexer
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "tmux",
+		Columns:       80,
+		Lines:         24,
+		Colors:        8,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[J",
+		EnterCA:       "\x1b[?1049h",
+		ExitCA:        "\x1b[?1049l",
+		ShowCursor:    "\x1b[34h\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b[m\x0f",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[3%p1%dm",
+		SetBg:         "\x1b[4%p1%dm",
+		SetFgBg:       "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:     "\x1b[39;49m",
+		PadChar:       "\x00",
+		AltChars:      "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x0e",
+		ExitAcs:       "\x0f",
+		EnableAcs:     "\x1b(B\x1b)0",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1bM",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1b[1~",
+		KeyEnd:        "\x1b[4~",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/terminfo.go b/vendor/github.com/gdamore/tcell/v2/terminfo/terminfo.go
new file mode 100644
index 0000000..7e17352
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/terminfo.go
@@ -0,0 +1,827 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package terminfo
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+)
+
+var (
+	// ErrTermNotFound indicates that a suitable terminal entry could
+	// not be found.  This can result from either not having TERM set,
+	// or from the TERM failing to support certain minimal functionality,
+	// in particular absolute cursor addressability (the cup capability)
+	// is required.  For example, legacy "adm3" lacks this capability,
+	// whereas the slightly newer "adm3a" supports it.  This failure
+	// occurs most often with "dumb".
+	ErrTermNotFound = errors.New("terminal entry not found")
+)
+
+// Terminfo represents a terminfo entry.  Note that we use friendly names
+// in Go, but when we write out JSON, we use the same names as terminfo.
+// The name, aliases and smous, rmous fields do not come from terminfo directly.
+type Terminfo struct {
+	Name         string
+	Aliases      []string
+	Columns      int    // cols
+	Lines        int    // lines
+	Colors       int    // colors
+	Bell         string // bell
+	Clear        string // clear
+	EnterCA      string // smcup
+	ExitCA       string // rmcup
+	ShowCursor   string // cnorm
+	HideCursor   string // civis
+	AttrOff      string // sgr0
+	Underline    string // smul
+	Bold         string // bold
+	Blink        string // blink
+	Reverse      string // rev
+	Dim          string // dim
+	Italic       string // sitm
+	EnterKeypad  string // smkx
+	ExitKeypad   string // rmkx
+	SetFg        string // setaf
+	SetBg        string // setab
+	ResetFgBg    string // op
+	SetCursor    string // cup
+	CursorBack1  string // cub1
+	CursorUp1    string // cuu1
+	PadChar      string // pad
+	KeyBackspace string // kbs
+	KeyF1        string // kf1
+	KeyF2        string // kf2
+	KeyF3        string // kf3
+	KeyF4        string // kf4
+	KeyF5        string // kf5
+	KeyF6        string // kf6
+	KeyF7        string // kf7
+	KeyF8        string // kf8
+	KeyF9        string // kf9
+	KeyF10       string // kf10
+	KeyF11       string // kf11
+	KeyF12       string // kf12
+	KeyF13       string // kf13
+	KeyF14       string // kf14
+	KeyF15       string // kf15
+	KeyF16       string // kf16
+	KeyF17       string // kf17
+	KeyF18       string // kf18
+	KeyF19       string // kf19
+	KeyF20       string // kf20
+	KeyF21       string // kf21
+	KeyF22       string // kf22
+	KeyF23       string // kf23
+	KeyF24       string // kf24
+	KeyF25       string // kf25
+	KeyF26       string // kf26
+	KeyF27       string // kf27
+	KeyF28       string // kf28
+	KeyF29       string // kf29
+	KeyF30       string // kf30
+	KeyF31       string // kf31
+	KeyF32       string // kf32
+	KeyF33       string // kf33
+	KeyF34       string // kf34
+	KeyF35       string // kf35
+	KeyF36       string // kf36
+	KeyF37       string // kf37
+	KeyF38       string // kf38
+	KeyF39       string // kf39
+	KeyF40       string // kf40
+	KeyF41       string // kf41
+	KeyF42       string // kf42
+	KeyF43       string // kf43
+	KeyF44       string // kf44
+	KeyF45       string // kf45
+	KeyF46       string // kf46
+	KeyF47       string // kf47
+	KeyF48       string // kf48
+	KeyF49       string // kf49
+	KeyF50       string // kf50
+	KeyF51       string // kf51
+	KeyF52       string // kf52
+	KeyF53       string // kf53
+	KeyF54       string // kf54
+	KeyF55       string // kf55
+	KeyF56       string // kf56
+	KeyF57       string // kf57
+	KeyF58       string // kf58
+	KeyF59       string // kf59
+	KeyF60       string // kf60
+	KeyF61       string // kf61
+	KeyF62       string // kf62
+	KeyF63       string // kf63
+	KeyF64       string // kf64
+	KeyInsert    string // kich1
+	KeyDelete    string // kdch1
+	KeyHome      string // khome
+	KeyEnd       string // kend
+	KeyHelp      string // khlp
+	KeyPgUp      string // kpp
+	KeyPgDn      string // knp
+	KeyUp        string // kcuu1
+	KeyDown      string // kcud1
+	KeyLeft      string // kcub1
+	KeyRight     string // kcuf1
+	KeyBacktab   string // kcbt
+	KeyExit      string // kext
+	KeyClear     string // kclr
+	KeyPrint     string // kprt
+	KeyCancel    string // kcan
+	Mouse        string // kmous
+	AltChars     string // acsc
+	EnterAcs     string // smacs
+	ExitAcs      string // rmacs
+	EnableAcs    string // enacs
+	KeyShfRight  string // kRIT
+	KeyShfLeft   string // kLFT
+	KeyShfHome   string // kHOM
+	KeyShfEnd    string // kEND
+	KeyShfInsert string // kIC
+	KeyShfDelete string // kDC
+
+	// These are non-standard extensions to terminfo.  This includes
+	// true color support, and some additional keys.  Its kind of bizarre
+	// that shifted variants of left and right exist, but not up and down.
+	// Terminal support for these are going to vary amongst XTerm
+	// emulations, so don't depend too much on them in your application.
+
+	StrikeThrough   string // smxx
+	SetFgBg         string // setfgbg
+	SetFgBgRGB      string // setfgbgrgb
+	SetFgRGB        string // setfrgb
+	SetBgRGB        string // setbrgb
+	KeyShfUp        string // shift-up
+	KeyShfDown      string // shift-down
+	KeyShfPgUp      string // shift-kpp
+	KeyShfPgDn      string // shift-knp
+	KeyCtrlUp       string // ctrl-up
+	KeyCtrlDown     string // ctrl-left
+	KeyCtrlRight    string // ctrl-right
+	KeyCtrlLeft     string // ctrl-left
+	KeyMetaUp       string // meta-up
+	KeyMetaDown     string // meta-left
+	KeyMetaRight    string // meta-right
+	KeyMetaLeft     string // meta-left
+	KeyAltUp        string // alt-up
+	KeyAltDown      string // alt-left
+	KeyAltRight     string // alt-right
+	KeyAltLeft      string // alt-left
+	KeyCtrlHome     string
+	KeyCtrlEnd      string
+	KeyMetaHome     string
+	KeyMetaEnd      string
+	KeyAltHome      string
+	KeyAltEnd       string
+	KeyAltShfUp     string
+	KeyAltShfDown   string
+	KeyAltShfLeft   string
+	KeyAltShfRight  string
+	KeyMetaShfUp    string
+	KeyMetaShfDown  string
+	KeyMetaShfLeft  string
+	KeyMetaShfRight string
+	KeyCtrlShfUp    string
+	KeyCtrlShfDown  string
+	KeyCtrlShfLeft  string
+	KeyCtrlShfRight string
+	KeyCtrlShfHome  string
+	KeyCtrlShfEnd   string
+	KeyAltShfHome   string
+	KeyAltShfEnd    string
+	KeyMetaShfHome  string
+	KeyMetaShfEnd   string
+	EnablePaste     string // bracketed paste mode
+	DisablePaste    string
+	PasteStart      string
+	PasteEnd        string
+	Modifiers       int
+	InsertChar      string // string to insert a character (ich1)
+	AutoMargin      bool   // true if writing to last cell in line advances
+	TrueColor       bool   // true if the terminal supports direct color
+}
+
+const (
+	ModifiersNone  = 0
+	ModifiersXTerm = 1
+)
+
+type stackElem struct {
+	s     string
+	i     int
+	isStr bool
+	isInt bool
+}
+
+type stack []stackElem
+
+func (st stack) Push(v string) stack {
+	e := stackElem{
+		s:     v,
+		isStr: true,
+	}
+	return append(st, e)
+}
+
+func (st stack) Pop() (string, stack) {
+	v := ""
+	if len(st) > 0 {
+		e := st[len(st)-1]
+		st = st[:len(st)-1]
+		if e.isStr {
+			v = e.s
+		} else {
+			v = strconv.Itoa(e.i)
+		}
+	}
+	return v, st
+}
+
+func (st stack) PopInt() (int, stack) {
+	if len(st) > 0 {
+		e := st[len(st)-1]
+		st = st[:len(st)-1]
+		if e.isInt {
+			return e.i, st
+		} else if e.isStr {
+			// If the string that was pushed was the representation
+			// of a number e.g. '123', then return the number. If the
+			// conversion doesn't work, assume the string pushed was
+			// intended to return, as an int, the ascii representation
+			// of the (one and only) character.
+			i, err := strconv.Atoi(e.s)
+			if err == nil {
+				return i, st
+			} else if len(e.s) >= 1 {
+				return int(e.s[0]), st
+			}
+		}
+	}
+	return 0, st
+}
+
+func (st stack) PopBool() (bool, stack) {
+	if len(st) > 0 {
+		e := st[len(st)-1]
+		st = st[:len(st)-1]
+		if e.isStr {
+			if e.s == "1" {
+				return true, st
+			}
+			return false, st
+		} else if e.i == 1 {
+			return true, st
+		} else {
+			return false, st
+		}
+	}
+	return false, st
+}
+
+func (st stack) PushInt(i int) stack {
+	e := stackElem{
+		i:     i,
+		isInt: true,
+	}
+	return append(st, e)
+}
+
+func (st stack) PushBool(i bool) stack {
+	if i {
+		return st.PushInt(1)
+	}
+	return st.PushInt(0)
+}
+
+// static vars
+var svars [26]string
+
+// paramsBuffer handles some persistent state for TParam.  Technically we
+// could probably dispense with this, but caching buffer arrays gives us
+// a nice little performance boost.  Furthermore, we know that TParam is
+// rarely (never?) called re-entrantly, so we can just reuse the same
+// buffers, making it thread-safe by stashing a lock.
+type paramsBuffer struct {
+	out bytes.Buffer
+	buf bytes.Buffer
+	lk  sync.Mutex
+}
+
+// Start initializes the params buffer with the initial string data.
+// It also locks the paramsBuffer.  The caller must call End() when
+// finished.
+func (pb *paramsBuffer) Start(s string) {
+	pb.lk.Lock()
+	pb.out.Reset()
+	pb.buf.Reset()
+	pb.buf.WriteString(s)
+}
+
+// End returns the final output from TParam, but it also releases the lock.
+func (pb *paramsBuffer) End() string {
+	s := pb.out.String()
+	pb.lk.Unlock()
+	return s
+}
+
+// NextCh returns the next input character to the expander.
+func (pb *paramsBuffer) NextCh() (byte, error) {
+	return pb.buf.ReadByte()
+}
+
+// PutCh "emits" (rather schedules for output) a single byte character.
+func (pb *paramsBuffer) PutCh(ch byte) {
+	pb.out.WriteByte(ch)
+}
+
+// PutString schedules a string for output.
+func (pb *paramsBuffer) PutString(s string) {
+	pb.out.WriteString(s)
+}
+
+var pb = &paramsBuffer{}
+
+// TParm takes a terminfo parameterized string, such as setaf or cup, and
+// evaluates the string, and returns the result with the parameter
+// applied.
+func (t *Terminfo) TParm(s string, p ...int) string {
+	var stk stack
+	var a, b string
+	var ai, bi int
+	var ab bool
+	var dvars [26]string
+	var params [9]int
+
+	pb.Start(s)
+
+	// make sure we always have 9 parameters -- makes it easier
+	// later to skip checks
+	for i := 0; i < len(params) && i < len(p); i++ {
+		params[i] = p[i]
+	}
+
+	nest := 0
+
+	for {
+
+		ch, err := pb.NextCh()
+		if err != nil {
+			break
+		}
+
+		if ch != '%' {
+			pb.PutCh(ch)
+			continue
+		}
+
+		ch, err = pb.NextCh()
+		if err != nil {
+			// XXX Error
+			break
+		}
+
+		switch ch {
+		case '%': // quoted %
+			pb.PutCh(ch)
+
+		case 'i': // increment both parameters (ANSI cup support)
+			params[0]++
+			params[1]++
+
+		case 'c', 's':
+			// NB: these, and 'd' below are special cased for
+			// efficiency.  They could be handled by the richer
+			// format support below, less efficiently.
+			a, stk = stk.Pop()
+			pb.PutString(a)
+
+		case 'd':
+			ai, stk = stk.PopInt()
+			pb.PutString(strconv.Itoa(ai))
+
+		case '0', '1', '2', '3', '4', 'x', 'X', 'o', ':':
+			// This is pretty suboptimal, but this is rarely used.
+			// None of the mainstream terminals use any of this,
+			// and it would surprise me if this code is ever
+			// executed outside of test cases.
+			f := "%"
+			if ch == ':' {
+				ch, _ = pb.NextCh()
+			}
+			f += string(ch)
+			for ch == '+' || ch == '-' || ch == '#' || ch == ' ' {
+				ch, _ = pb.NextCh()
+				f += string(ch)
+			}
+			for (ch >= '0' && ch <= '9') || ch == '.' {
+				ch, _ = pb.NextCh()
+				f += string(ch)
+			}
+			switch ch {
+			case 'd', 'x', 'X', 'o':
+				ai, stk = stk.PopInt()
+				pb.PutString(fmt.Sprintf(f, ai))
+			case 'c', 's':
+				a, stk = stk.Pop()
+				pb.PutString(fmt.Sprintf(f, a))
+			}
+
+		case 'p': // push parameter
+			ch, _ = pb.NextCh()
+			ai = int(ch - '1')
+			if ai >= 0 && ai < len(params) {
+				stk = stk.PushInt(params[ai])
+			} else {
+				stk = stk.PushInt(0)
+			}
+
+		case 'P': // pop & store variable
+			ch, _ = pb.NextCh()
+			if ch >= 'A' && ch <= 'Z' {
+				svars[int(ch-'A')], stk = stk.Pop()
+			} else if ch >= 'a' && ch <= 'z' {
+				dvars[int(ch-'a')], stk = stk.Pop()
+			}
+
+		case 'g': // recall & push variable
+			ch, _ = pb.NextCh()
+			if ch >= 'A' && ch <= 'Z' {
+				stk = stk.Push(svars[int(ch-'A')])
+			} else if ch >= 'a' && ch <= 'z' {
+				stk = stk.Push(dvars[int(ch-'a')])
+			}
+
+		case '\'': // push(char)
+			ch, _ = pb.NextCh()
+			pb.NextCh() // must be ' but we don't check
+			stk = stk.Push(string(ch))
+
+		case '{': // push(int)
+			ai = 0
+			ch, _ = pb.NextCh()
+			for ch >= '0' && ch <= '9' {
+				ai *= 10
+				ai += int(ch - '0')
+				ch, _ = pb.NextCh()
+			}
+			// ch must be '}' but no verification
+			stk = stk.PushInt(ai)
+
+		case 'l': // push(strlen(pop))
+			a, stk = stk.Pop()
+			stk = stk.PushInt(len(a))
+
+		case '+':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai + bi)
+
+		case '-':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai - bi)
+
+		case '*':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai * bi)
+
+		case '/':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			if bi != 0 {
+				stk = stk.PushInt(ai / bi)
+			} else {
+				stk = stk.PushInt(0)
+			}
+
+		case 'm': // push(pop mod pop)
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			if bi != 0 {
+				stk = stk.PushInt(ai % bi)
+			} else {
+				stk = stk.PushInt(0)
+			}
+
+		case '&': // AND
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai & bi)
+
+		case '|': // OR
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai | bi)
+
+		case '^': // XOR
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai ^ bi)
+
+		case '~': // bit complement
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai ^ -1)
+
+		case '!': // logical NOT
+			ai, stk = stk.PopInt()
+			stk = stk.PushBool(ai != 0)
+
+		case '=': // numeric compare or string compare
+			b, stk = stk.Pop()
+			a, stk = stk.Pop()
+			stk = stk.PushBool(a == b)
+
+		case '>': // greater than, numeric
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushBool(ai > bi)
+
+		case '<': // less than, numeric
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushBool(ai < bi)
+
+		case '?': // start conditional
+
+		case 't':
+			ab, stk = stk.PopBool()
+			if ab {
+				// just keep going
+				break
+			}
+			nest = 0
+		ifloop:
+			// this loop consumes everything until we hit our else,
+			// or the end of the conditional
+			for {
+				ch, err = pb.NextCh()
+				if err != nil {
+					break
+				}
+				if ch != '%' {
+					continue
+				}
+				ch, _ = pb.NextCh()
+				switch ch {
+				case ';':
+					if nest == 0 {
+						break ifloop
+					}
+					nest--
+				case '?':
+					nest++
+				case 'e':
+					if nest == 0 {
+						break ifloop
+					}
+				}
+			}
+
+		case 'e':
+			// if we got here, it means we didn't use the else
+			// in the 't' case above, and we should skip until
+			// the end of the conditional
+			nest = 0
+		elloop:
+			for {
+				ch, err = pb.NextCh()
+				if err != nil {
+					break
+				}
+				if ch != '%' {
+					continue
+				}
+				ch, _ = pb.NextCh()
+				switch ch {
+				case ';':
+					if nest == 0 {
+						break elloop
+					}
+					nest--
+				case '?':
+					nest++
+				}
+			}
+
+		case ';': // endif
+
+		}
+	}
+
+	return pb.End()
+}
+
+// TPuts emits the string to the writer, but expands inline padding
+// indications (of the form $<[delay]> where [delay] is msec) to
+// a suitable time (unless the terminfo string indicates this isn't needed
+// by specifying npc - no padding).  All Terminfo based strings should be
+// emitted using this function.
+func (t *Terminfo) TPuts(w io.Writer, s string) {
+	for {
+		beg := strings.Index(s, "$<")
+		if beg < 0 {
+			// Most strings don't need padding, which is good news!
+			io.WriteString(w, s)
+			return
+		}
+		io.WriteString(w, s[:beg])
+		s = s[beg+2:]
+		end := strings.Index(s, ">")
+		if end < 0 {
+			// unterminated.. just emit bytes unadulterated
+			io.WriteString(w, "$<"+s)
+			return
+		}
+		val := s[:end]
+		s = s[end+1:]
+		padus := 0
+		unit := time.Millisecond
+		dot := false
+	loop:
+		for i := range val {
+			switch val[i] {
+			case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+				padus *= 10
+				padus += int(val[i] - '0')
+				if dot {
+					unit /= 10
+				}
+			case '.':
+				if !dot {
+					dot = true
+				} else {
+					break loop
+				}
+			default:
+				break loop
+			}
+		}
+
+		// Curses historically uses padding to achieve "fine grained"
+		// delays. We have much better clocks these days, and so we
+		// do not rely on padding but simply sleep a bit.
+		if len(t.PadChar) > 0 {
+			time.Sleep(unit * time.Duration(padus))
+		}
+	}
+}
+
+// TGoto returns a string suitable for addressing the cursor at the given
+// row and column.  The origin 0, 0 is in the upper left corner of the screen.
+func (t *Terminfo) TGoto(col, row int) string {
+	return t.TParm(t.SetCursor, row, col)
+}
+
+// TColor returns a string corresponding to the given foreground and background
+// colors.  Either fg or bg can be set to -1 to elide.
+func (t *Terminfo) TColor(fi, bi int) string {
+	rv := ""
+	// As a special case, we map bright colors to lower versions if the
+	// color table only holds 8.  For the remaining 240 colors, the user
+	// is out of luck.  Someday we could create a mapping table, but its
+	// not worth it.
+	if t.Colors == 8 {
+		if fi > 7 && fi < 16 {
+			fi -= 8
+		}
+		if bi > 7 && bi < 16 {
+			bi -= 8
+		}
+	}
+	if t.Colors > fi && fi >= 0 {
+		rv += t.TParm(t.SetFg, fi)
+	}
+	if t.Colors > bi && bi >= 0 {
+		rv += t.TParm(t.SetBg, bi)
+	}
+	return rv
+}
+
+var (
+	dblock    sync.Mutex
+	terminfos = make(map[string]*Terminfo)
+	aliases   = make(map[string]string)
+)
+
+// AddTerminfo can be called to register a new Terminfo entry.
+func AddTerminfo(t *Terminfo) {
+	dblock.Lock()
+	terminfos[t.Name] = t
+	for _, x := range t.Aliases {
+		terminfos[x] = t
+	}
+	dblock.Unlock()
+}
+
+// LookupTerminfo attempts to find a definition for the named $TERM.
+func LookupTerminfo(name string) (*Terminfo, error) {
+	if name == "" {
+		// else on windows: index out of bounds
+		// on the name[0] reference below
+		return nil, ErrTermNotFound
+	}
+
+	addtruecolor := false
+	add256color := false
+	switch os.Getenv("COLORTERM") {
+	case "truecolor", "24bit", "24-bit":
+		addtruecolor = true
+	}
+	dblock.Lock()
+	t := terminfos[name]
+	dblock.Unlock()
+
+	// If the name ends in -truecolor, then fabricate an entry
+	// from the corresponding -256color, -color, or bare terminal.
+	if t != nil && t.TrueColor {
+		addtruecolor = true
+	} else if t == nil && strings.HasSuffix(name, "-truecolor") {
+
+		suffixes := []string{
+			"-256color",
+			"-88color",
+			"-color",
+			"",
+		}
+		base := name[:len(name)-len("-truecolor")]
+		for _, s := range suffixes {
+			if t, _ = LookupTerminfo(base + s); t != nil {
+				addtruecolor = true
+				break
+			}
+		}
+	}
+
+	// If the name ends in -256color, maybe fabricate using the xterm 256 color sequences
+	if t == nil && strings.HasSuffix(name, "-256color") {
+		suffixes := []string{
+			"-88color",
+			"-color",
+		}
+		base := name[:len(name)-len("-256color")]
+		for _, s := range suffixes {
+			if t, _ = LookupTerminfo(base + s); t != nil {
+				add256color = true
+				break
+			}
+		}
+	}
+
+	if t == nil {
+		return nil, ErrTermNotFound
+	}
+
+	switch os.Getenv("TCELL_TRUECOLOR") {
+	case "":
+	case "disable":
+		addtruecolor = false
+	default:
+		addtruecolor = true
+	}
+
+	// If the user has requested 24-bit color with $COLORTERM, then
+	// amend the value (unless already present).  This means we don't
+	// need to have a value present.
+	if addtruecolor &&
+		t.SetFgBgRGB == "" &&
+		t.SetFgRGB == "" &&
+		t.SetBgRGB == "" {
+
+		// Supply vanilla ISO 8613-6:1994 24-bit color sequences.
+		t.SetFgRGB = "\x1b[38;2;%p1%d;%p2%d;%p3%dm"
+		t.SetBgRGB = "\x1b[48;2;%p1%d;%p2%d;%p3%dm"
+		t.SetFgBgRGB = "\x1b[38;2;%p1%d;%p2%d;%p3%d;" +
+			"48;2;%p4%d;%p5%d;%p6%dm"
+	}
+
+	if add256color {
+		t.Colors = 256
+		t.SetFg = "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m"
+		t.SetBg = "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m"
+		t.SetFgBg = "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m"
+		t.ResetFgBg = "\x1b[39;49m"
+	}
+	return t, nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt100/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt100/term.go
new file mode 100644
index 0000000..0ae3918
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt100/term.go
@@ -0,0 +1,49 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt100
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// dec vt100 (w/advanced video)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt100",
+		Aliases:      []string{"vt100-am"},
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J$<50>",
+		AttrOff:      "\x1b[m\x0f$<2>",
+		Underline:    "\x1b[4m$<2>",
+		Bold:         "\x1b[1m$<2>",
+		Blink:        "\x1b[5m$<2>",
+		Reverse:      "\x1b[7m$<2>",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH$<5>",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A$<2>",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyBackspace: "\b",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1bOt",
+		KeyF6:        "\x1bOu",
+		KeyF7:        "\x1bOv",
+		KeyF8:        "\x1bOl",
+		KeyF9:        "\x1bOw",
+		KeyF10:       "\x1bOx",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt102/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt102/term.go
new file mode 100644
index 0000000..ec8dae2
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt102/term.go
@@ -0,0 +1,48 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt102
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// dec vt102
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt102",
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J$<50>",
+		AttrOff:      "\x1b[m\x0f$<2>",
+		Underline:    "\x1b[4m$<2>",
+		Bold:         "\x1b[1m$<2>",
+		Blink:        "\x1b[5m$<2>",
+		Reverse:      "\x1b[7m$<2>",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b(B\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH$<5>",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A$<2>",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyBackspace: "\b",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1bOt",
+		KeyF6:        "\x1bOu",
+		KeyF7:        "\x1bOv",
+		KeyF8:        "\x1bOl",
+		KeyF9:        "\x1bOw",
+		KeyF10:       "\x1bOx",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt220/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt220/term.go
new file mode 100644
index 0000000..75ab9a8
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt220/term.go
@@ -0,0 +1,59 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt220
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// dec vt220
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt220",
+		Aliases:      []string{"vt200"},
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J",
+		AttrOff:      "\x1b[m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0$<2>",
+		ExitAcs:      "\x1b(B$<4>",
+		EnableAcs:    "\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\b",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		KeyHelp:      "\x1b[28~",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt320/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt320/term.go
new file mode 100644
index 0000000..3fd3d39
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt320/term.go
@@ -0,0 +1,64 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt320
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// dec vt320 7 bit terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt320",
+		Aliases:      []string{"vt300"},
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1b[1~",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF13:       "\x1b[25~",
+		KeyF14:       "\x1b[26~",
+		KeyF15:       "\x1b[28~",
+		KeyF16:       "\x1b[29~",
+		KeyF17:       "\x1b[31~",
+		KeyF18:       "\x1b[32~",
+		KeyF19:       "\x1b[33~",
+		KeyF20:       "\x1b[34~",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt400/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt400/term.go
new file mode 100644
index 0000000..0c07e9d
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt400/term.go
@@ -0,0 +1,48 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt400
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// dec vt400 24x80 column autowrap
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt400",
+		Aliases:      []string{"vt400-24", "dec-vt400"},
+		Columns:      80,
+		Lines:        24,
+		Clear:        "\x1b[H\x1b[J$<10/>",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x1b(B",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyBackspace: "\b",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		AutoMargin:   true,
+		InsertChar:   "\x1b[@",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt420/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt420/term.go
new file mode 100644
index 0000000..094886e
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt420/term.go
@@ -0,0 +1,54 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt420
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// DEC VT420
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt420",
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J$<50>",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x1b(B$<2>",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m$<2>",
+		Blink:        "\x1b[5m$<2>",
+		Reverse:      "\x1b[7m$<2>",
+		EnterKeypad:  "\x1b=",
+		ExitKeypad:   "\x1b>",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0$<2>",
+		ExitAcs:      "\x1b(B$<4>",
+		EnableAcs:    "\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH$<10>",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1b[A",
+		KeyDown:      "\x1b[B",
+		KeyRight:     "\x1b[C",
+		KeyLeft:      "\x1b[D",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\b",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[17~",
+		KeyF6:        "\x1b[18~",
+		KeyF7:        "\x1b[19~",
+		KeyF8:        "\x1b[20~",
+		KeyF9:        "\x1b[21~",
+		KeyF10:       "\x1b[29~",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt52/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt52/term.go
new file mode 100644
index 0000000..ba49f7f
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/v/vt52/term.go
@@ -0,0 +1,29 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package vt52
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// dec vt52
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "vt52",
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1bH\x1bJ",
+		PadChar:      "\x00",
+		AltChars:     "+h.k0affggolpnqprrss",
+		EnterAcs:     "\x1bF",
+		ExitAcs:      "\x1bG",
+		SetCursor:    "\x1bY%p1%' '%+%c%p2%' '%+%c",
+		CursorBack1:  "\x1bD",
+		CursorUp1:    "\x1bA",
+		KeyUp:        "\x1bA",
+		KeyDown:      "\x1bB",
+		KeyRight:     "\x1bC",
+		KeyLeft:      "\x1bD",
+		KeyBackspace: "\b",
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy50/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy50/term.go
new file mode 100644
index 0000000..beced62
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy50/term.go
@@ -0,0 +1,60 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package wy50
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// Wyse 50
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "wy50",
+		Aliases:      []string{"wyse50"},
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b+$<20>",
+		ShowCursor:   "\x1b`1",
+		HideCursor:   "\x1b`0",
+		AttrOff:      "\x1b(\x1bH\x03",
+		Dim:          "\x1b`7\x1b)",
+		Reverse:      "\x1b`6\x1b)",
+		PadChar:      "\x00",
+		AltChars:     "a;j5k3l2m1n8q:t4u9v=w0x6",
+		EnterAcs:     "\x1bH\x02",
+		ExitAcs:      "\x1bH\x03",
+		SetCursor:    "\x1b=%p1%' '%+%c%p2%' '%+%c",
+		CursorBack1:  "\b",
+		CursorUp1:    "\v",
+		KeyUp:        "\v",
+		KeyDown:      "\n",
+		KeyRight:     "\f",
+		KeyLeft:      "\b",
+		KeyInsert:    "\x1bQ",
+		KeyDelete:    "\x1bW",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1e",
+		KeyPgUp:      "\x1bJ",
+		KeyPgDn:      "\x1bK",
+		KeyF1:        "\x01@\r",
+		KeyF2:        "\x01A\r",
+		KeyF3:        "\x01B\r",
+		KeyF4:        "\x01C\r",
+		KeyF5:        "\x01D\r",
+		KeyF6:        "\x01E\r",
+		KeyF7:        "\x01F\r",
+		KeyF8:        "\x01G\r",
+		KeyF9:        "\x01H\r",
+		KeyF10:       "\x01I\r",
+		KeyF11:       "\x01J\r",
+		KeyF12:       "\x01K\r",
+		KeyF13:       "\x01L\r",
+		KeyF14:       "\x01M\r",
+		KeyF15:       "\x01N\r",
+		KeyF16:       "\x01O\r",
+		KeyPrint:     "\x1bP",
+		KeyBacktab:   "\x1bI",
+		KeyShfHome:   "\x1b{",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy60/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy60/term.go
new file mode 100644
index 0000000..5b79310
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy60/term.go
@@ -0,0 +1,64 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package wy60
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// Wyse 60
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "wy60",
+		Aliases:      []string{"wyse60"},
+		Columns:      80,
+		Lines:        24,
+		Bell:         "\a",
+		Clear:        "\x1b+$<100>",
+		EnterCA:      "\x1bw0",
+		ExitCA:       "\x1bw1",
+		ShowCursor:   "\x1b`1",
+		HideCursor:   "\x1b`0",
+		AttrOff:      "\x1b(\x1bH\x03\x1bG0\x1bcD",
+		Underline:    "\x1bG8",
+		Dim:          "\x1bGp",
+		Blink:        "\x1bG2",
+		Reverse:      "\x1bG4",
+		PadChar:      "\x00",
+		AltChars:     "+/,.0[a2fxgqh1ihjYk?lZm@nEqDtCu4vAwBx3yszr{c~~",
+		EnterAcs:     "\x1bcE",
+		ExitAcs:      "\x1bcD",
+		SetCursor:    "\x1b=%p1%' '%+%c%p2%' '%+%c",
+		CursorBack1:  "\b",
+		CursorUp1:    "\v",
+		KeyUp:        "\v",
+		KeyDown:      "\n",
+		KeyRight:     "\f",
+		KeyLeft:      "\b",
+		KeyInsert:    "\x1bQ",
+		KeyDelete:    "\x1bW",
+		KeyBackspace: "\b",
+		KeyHome:      "\x1e",
+		KeyPgUp:      "\x1bJ",
+		KeyPgDn:      "\x1bK",
+		KeyF1:        "\x01@\r",
+		KeyF2:        "\x01A\r",
+		KeyF3:        "\x01B\r",
+		KeyF4:        "\x01C\r",
+		KeyF5:        "\x01D\r",
+		KeyF6:        "\x01E\r",
+		KeyF7:        "\x01F\r",
+		KeyF8:        "\x01G\r",
+		KeyF9:        "\x01H\r",
+		KeyF10:       "\x01I\r",
+		KeyF11:       "\x01J\r",
+		KeyF12:       "\x01K\r",
+		KeyF13:       "\x01L\r",
+		KeyF14:       "\x01M\r",
+		KeyF15:       "\x01N\r",
+		KeyF16:       "\x01O\r",
+		KeyPrint:     "\x1bP",
+		KeyBacktab:   "\x1bI",
+		KeyShfHome:   "\x1b{",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy99_ansi/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy99_ansi/term.go
new file mode 100644
index 0000000..af470e4
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/w/wy99_ansi/term.go
@@ -0,0 +1,116 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package wy99_ansi
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// Wyse WY-99GT in ansi mode (int'l PC keyboard)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "wy99-ansi",
+		Columns:      80,
+		Lines:        25,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J$<200>",
+		ShowCursor:   "\x1b[34h\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f\x1b[\"q",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h",
+		ExitKeypad:   "\x1b[?1l",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooqqssttuuvvwwxx{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b$<1>",
+		CursorUp1:    "\x1bM",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyBackspace: "\b",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[M",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF17:       "\x1b[K",
+		KeyF18:       "\x1b[31~",
+		KeyF19:       "\x1b[32~",
+		KeyF20:       "\x1b[33~",
+		KeyF21:       "\x1b[34~",
+		KeyF22:       "\x1b[35~",
+		KeyF23:       "\x1b[1~",
+		KeyF24:       "\x1b[2~",
+		KeyBacktab:   "\x1b[z",
+		AutoMargin:   true,
+	})
+
+	// Wyse WY-99GT in ansi mode (US PC keyboard)
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "wy99a-ansi",
+		Columns:      80,
+		Lines:        25,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[J$<200>",
+		ShowCursor:   "\x1b[34h\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[m\x0f\x1b[\"q",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Blink:        "\x1b[5m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h",
+		ExitKeypad:   "\x1b[?1l",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggjjkkllmmnnooqqssttuuvvwwxx{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b)0",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b$<1>",
+		CursorUp1:    "\x1bM",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyBackspace: "\b",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[M",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyF17:       "\x1b[K",
+		KeyF18:       "\x1b[31~",
+		KeyF19:       "\x1b[32~",
+		KeyF20:       "\x1b[33~",
+		KeyF21:       "\x1b[34~",
+		KeyF22:       "\x1b[35~",
+		KeyF23:       "\x1b[1~",
+		KeyF24:       "\x1b[2~",
+		KeyBacktab:   "\x1b[z",
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/x/xfce/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xfce/term.go
new file mode 100644
index 0000000..d70b2e9
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xfce/term.go
@@ -0,0 +1,67 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package xfce
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// Xfce Terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "xfce",
+		Columns:      80,
+		Lines:        24,
+		Colors:       8,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b7\x1b[?47h",
+		ExitCA:       "\x1b[2J\x1b[?47l\x1b8",
+		ShowCursor:   "\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b[0m\x0f",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[3%p1%dm",
+		SetBg:        "\x1b[4%p1%dm",
+		SetFgBg:      "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:    "\x1b[39;49m",
+		PadChar:      "\x00",
+		AltChars:     "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x0e",
+		ExitAcs:      "\x0f",
+		EnableAcs:    "\x1b)0",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1bOH",
+		KeyEnd:       "\x1bOF",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		Modifiers:    1,
+		AutoMargin:   true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm/direct.go b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm/direct.go
new file mode 100644
index 0000000..358ebae
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm/direct.go
@@ -0,0 +1,92 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This terminal definition is derived from the xterm-256color definition, but
+// makes use of the RGB property these terminals have to support direct color.
+// The terminfo entry for this uses a new format for the color handling introduced
+// by ncurses 6.1 (and used by nobody else), so this override ensures we get
+// good handling even in the face of this.
+
+package xterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// derived from xterm-256color, but adds full RGB support
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "xterm-direct",
+		Aliases:       []string{"xterm-truecolor"},
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:        "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		SetFgRGB:      "\x1b[38;2;%p1%d;%p2%d;%p3%dm",
+		SetBgRGB:      "\x1b[48;2;%p1%d;%p2%d;%p3%dm",
+		SetFgBgRGB:    "\x1b[38;2;%p1%d;%p2%d;%p3%d;48;2;%p4%d;%p5%d;%p6%dm",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+		TrueColor:     true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm/term.go
new file mode 100644
index 0000000..daa19c3
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm/term.go
@@ -0,0 +1,192 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package xterm
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// X11 terminal emulator
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "xterm",
+		Aliases:       []string{"xterm-debian"},
+		Columns:       80,
+		Lines:         24,
+		Colors:        8,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:        "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[3%p1%dm",
+		SetBg:         "\x1b[4%p1%dm",
+		SetFgBg:       "\x1b[3%p1%d;4%p2%dm",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+
+	// xterm with 88 colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "xterm-88color",
+		Columns:       80,
+		Lines:         24,
+		Colors:        88,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:        "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+
+	// xterm with 256 colors
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "xterm-256color",
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h\x1b[22;0;0t",
+		ExitCA:        "\x1b[?1049l\x1b[23;0;0t",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Blink:         "\x1b[5m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h\x1b=",
+		ExitKeypad:    "\x1b[?1l\x1b>",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		AutoMargin:    true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm_kitty/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm_kitty/term.go
new file mode 100644
index 0000000..ab50003
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm_kitty/term.go
@@ -0,0 +1,69 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package xterm_kitty
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// KovIdTTY
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:          "xterm-kitty",
+		Columns:       80,
+		Lines:         24,
+		Colors:        256,
+		Bell:          "\a",
+		Clear:         "\x1b[H\x1b[2J",
+		EnterCA:       "\x1b[?1049h",
+		ExitCA:        "\x1b[?1049l",
+		ShowCursor:    "\x1b[?12l\x1b[?25h",
+		HideCursor:    "\x1b[?25l",
+		AttrOff:       "\x1b(B\x1b[m",
+		Underline:     "\x1b[4m",
+		Bold:          "\x1b[1m",
+		Dim:           "\x1b[2m",
+		Italic:        "\x1b[3m",
+		Reverse:       "\x1b[7m",
+		EnterKeypad:   "\x1b[?1h",
+		ExitKeypad:    "\x1b[?1l",
+		SetFg:         "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:         "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:       "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:     "\x1b[39;49m",
+		AltChars:      "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:      "\x1b(0",
+		ExitAcs:       "\x1b(B",
+		StrikeThrough: "\x1b[9m",
+		Mouse:         "\x1b[M",
+		SetCursor:     "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:   "\b",
+		CursorUp1:     "\x1b[A",
+		KeyUp:         "\x1bOA",
+		KeyDown:       "\x1bOB",
+		KeyRight:      "\x1bOC",
+		KeyLeft:       "\x1bOD",
+		KeyInsert:     "\x1b[2~",
+		KeyDelete:     "\x1b[3~",
+		KeyBackspace:  "\u007f",
+		KeyHome:       "\x1bOH",
+		KeyEnd:        "\x1bOF",
+		KeyPgUp:       "\x1b[5~",
+		KeyPgDn:       "\x1b[6~",
+		KeyF1:         "\x1bOP",
+		KeyF2:         "\x1bOQ",
+		KeyF3:         "\x1bOR",
+		KeyF4:         "\x1bOS",
+		KeyF5:         "\x1b[15~",
+		KeyF6:         "\x1b[17~",
+		KeyF7:         "\x1b[18~",
+		KeyF8:         "\x1b[19~",
+		KeyF9:         "\x1b[20~",
+		KeyF10:        "\x1b[21~",
+		KeyF11:        "\x1b[23~",
+		KeyF12:        "\x1b[24~",
+		KeyBacktab:    "\x1b[Z",
+		Modifiers:     1,
+		TrueColor:     true,
+		AutoMargin:    true,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm_termite/term.go b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm_termite/term.go
new file mode 100644
index 0000000..f2d0221
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terminfo/x/xterm_termite/term.go
@@ -0,0 +1,66 @@
+// Generated automatically.  DO NOT HAND-EDIT.
+
+package xterm_termite
+
+import "github.com/gdamore/tcell/v2/terminfo"
+
+func init() {
+
+	// VTE-based terminal
+	terminfo.AddTerminfo(&terminfo.Terminfo{
+		Name:         "xterm-termite",
+		Columns:      80,
+		Lines:        24,
+		Colors:       256,
+		Bell:         "\a",
+		Clear:        "\x1b[H\x1b[2J",
+		EnterCA:      "\x1b[?1049h",
+		ExitCA:       "\x1b[?1049l",
+		ShowCursor:   "\x1b[?12l\x1b[?25h",
+		HideCursor:   "\x1b[?25l",
+		AttrOff:      "\x1b(B\x1b[m",
+		Underline:    "\x1b[4m",
+		Bold:         "\x1b[1m",
+		Dim:          "\x1b[2m",
+		Italic:       "\x1b[3m",
+		Reverse:      "\x1b[7m",
+		EnterKeypad:  "\x1b[?1h\x1b=",
+		ExitKeypad:   "\x1b[?1l\x1b>",
+		SetFg:        "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+		SetBg:        "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+		SetFgBg:      "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;;%?%p2%{8}%<%t4%p2%d%e%p2%{16}%<%t10%p2%{8}%-%d%e48;5;%p2%d%;m",
+		ResetFgBg:    "\x1b[39;49m",
+		AltChars:     "++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+		EnterAcs:     "\x1b(0",
+		ExitAcs:      "\x1b(B",
+		Mouse:        "\x1b[M",
+		SetCursor:    "\x1b[%i%p1%d;%p2%dH",
+		CursorBack1:  "\b",
+		CursorUp1:    "\x1b[A",
+		KeyUp:        "\x1bOA",
+		KeyDown:      "\x1bOB",
+		KeyRight:     "\x1bOC",
+		KeyLeft:      "\x1bOD",
+		KeyInsert:    "\x1b[2~",
+		KeyDelete:    "\x1b[3~",
+		KeyBackspace: "\u007f",
+		KeyHome:      "\x1bOH",
+		KeyEnd:       "\x1bOF",
+		KeyPgUp:      "\x1b[5~",
+		KeyPgDn:      "\x1b[6~",
+		KeyF1:        "\x1bOP",
+		KeyF2:        "\x1bOQ",
+		KeyF3:        "\x1bOR",
+		KeyF4:        "\x1bOS",
+		KeyF5:        "\x1b[15~",
+		KeyF6:        "\x1b[17~",
+		KeyF7:        "\x1b[18~",
+		KeyF8:        "\x1b[19~",
+		KeyF9:        "\x1b[20~",
+		KeyF10:       "\x1b[21~",
+		KeyF11:       "\x1b[23~",
+		KeyF12:       "\x1b[24~",
+		KeyBacktab:   "\x1b[Z",
+		Modifiers:    1,
+	})
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terms_default.go b/vendor/github.com/gdamore/tcell/v2/terms_default.go
new file mode 100644
index 0000000..4ce7637
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terms_default.go
@@ -0,0 +1,23 @@
+// +build !tcell_minimal
+
+// Copyright 2019 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	// This imports the default terminal entries.  To disable, use the
+	// tcell_minimal build tag.
+	_ "github.com/gdamore/tcell/v2/terminfo/extended"
+)
diff --git a/vendor/github.com/gdamore/tcell/v2/terms_dynamic.go b/vendor/github.com/gdamore/tcell/v2/terms_dynamic.go
new file mode 100644
index 0000000..8f0994a
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terms_dynamic.go
@@ -0,0 +1,37 @@
+// +build !tcell_minimal,!nacl,!js,!zos,!plan9,!windows,!android
+
+// Copyright 2019 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	// This imports a dynamic version of the terminal database, which
+	// is built using infocmp.  This relies on a working installation
+	// of infocmp (typically supplied with ncurses).  We only do this
+	// for systems likely to have that -- i.e. UNIX based hosts.  We
+	// also don't support Android here, because you really don't want
+	// to run external programs there.  Generally the android terminals
+	// will be automatically included anyway.
+	"github.com/gdamore/tcell/v2/terminfo"
+	"github.com/gdamore/tcell/v2/terminfo/dynamic"
+)
+
+func loadDynamicTerminfo(term string) (*terminfo.Terminfo, error) {
+	ti, _, e := dynamic.LoadTerminfo(term)
+	if e != nil {
+		return nil, e
+	}
+	return ti, nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/terms_static.go b/vendor/github.com/gdamore/tcell/v2/terms_static.go
new file mode 100644
index 0000000..8b3fe12
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/terms_static.go
@@ -0,0 +1,27 @@
+// +build tcell_minimal nacl js zos plan9 windows android
+
+// Copyright 2019 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"errors"
+
+	"github.com/gdamore/tcell/v2/terminfo"
+)
+
+func loadDynamicTerminfo(_ string) (*terminfo.Terminfo, error) {
+	return nil, errors.New("terminal type unsupported")
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/tscreen.go b/vendor/github.com/gdamore/tcell/v2/tscreen.go
new file mode 100644
index 0000000..ebd61a2
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/tscreen.go
@@ -0,0 +1,1727 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+	"unicode/utf8"
+
+	"golang.org/x/term"
+	"golang.org/x/text/transform"
+
+	"github.com/gdamore/tcell/v2/terminfo"
+
+	// import the stock terminals
+	_ "github.com/gdamore/tcell/v2/terminfo/base"
+)
+
+// NewTerminfoScreen returns a Screen that uses the stock TTY interface
+// and POSIX terminal control, combined with a terminfo description taken from
+// the $TERM environment variable.  It returns an error if the terminal
+// is not supported for any reason.
+//
+// For terminals that do not support dynamic resize events, the $LINES
+// $COLUMNS environment variables can be set to the actual window size,
+// otherwise defaults taken from the terminal database are used.
+func NewTerminfoScreen() (Screen, error) {
+	return NewTerminfoScreenFromTty(nil)
+}
+
+// NewTerminfoScreenFromTty returns a Screen using a custom Tty implementation.
+// If the passed in tty is nil, then a reasonable default (typically /dev/tty)
+// is presumed, at least on UNIX hosts. (Windows hosts will typically fail this
+// call altogether.)
+func NewTerminfoScreenFromTty(tty Tty) (Screen, error) {
+	ti, e := terminfo.LookupTerminfo(os.Getenv("TERM"))
+	if e != nil {
+		ti, e = loadDynamicTerminfo(os.Getenv("TERM"))
+		if e != nil {
+			return nil, e
+		}
+		terminfo.AddTerminfo(ti)
+	}
+	t := &tScreen{ti: ti, tty: tty}
+
+	t.keyexist = make(map[Key]bool)
+	t.keycodes = make(map[string]*tKeyCode)
+	if len(ti.Mouse) > 0 {
+		t.mouse = []byte(ti.Mouse)
+	}
+	t.prepareKeys()
+	t.buildAcsMap()
+	t.resizeQ = make(chan bool, 1)
+	t.fallback = make(map[rune]string)
+	for k, v := range RuneFallbacks {
+		t.fallback[k] = v
+	}
+
+	return t, nil
+}
+
+// tKeyCode represents a combination of a key code and modifiers.
+type tKeyCode struct {
+	key Key
+	mod ModMask
+}
+
+// tScreen represents a screen backed by a terminfo implementation.
+type tScreen struct {
+	ti           *terminfo.Terminfo
+	tty          Tty
+	h            int
+	w            int
+	fini         bool
+	cells        CellBuffer
+	buffering    bool // true if we are collecting writes to buf instead of sending directly to out
+	buf          bytes.Buffer
+	curstyle     Style
+	style        Style
+	evch         chan Event
+	resizeQ      chan bool
+	quit         chan struct{}
+	keyexist     map[Key]bool
+	keycodes     map[string]*tKeyCode
+	keychan      chan []byte
+	keytimer     *time.Timer
+	keyexpire    time.Time
+	cx           int
+	cy           int
+	mouse        []byte
+	clear        bool
+	cursorx      int
+	cursory      int
+	wasbtn       bool
+	acs          map[rune]string
+	charset      string
+	encoder      transform.Transformer
+	decoder      transform.Transformer
+	fallback     map[rune]string
+	colors       map[Color]Color
+	palette      []Color
+	truecolor    bool
+	escaped      bool
+	buttondn     bool
+	finiOnce     sync.Once
+	enablePaste  string
+	disablePaste string
+	saved        *term.State
+	stopQ        chan struct{}
+	running      bool
+	wg           sync.WaitGroup
+	mouseFlags   MouseFlags
+	pasteEnabled bool
+
+	sync.Mutex
+}
+
+func (t *tScreen) Init() error {
+	if e := t.initialize(); e != nil {
+		return e
+	}
+
+	t.evch = make(chan Event, 10)
+	t.keychan = make(chan []byte, 10)
+	t.keytimer = time.NewTimer(time.Millisecond * 50)
+	t.charset = "UTF-8"
+
+	t.charset = getCharset()
+	if enc := GetEncoding(t.charset); enc != nil {
+		t.encoder = enc.NewEncoder()
+		t.decoder = enc.NewDecoder()
+	} else {
+		return ErrNoCharset
+	}
+	ti := t.ti
+
+	// environment overrides
+	w := ti.Columns
+	h := ti.Lines
+	if i, _ := strconv.Atoi(os.Getenv("LINES")); i != 0 {
+		h = i
+	}
+	if i, _ := strconv.Atoi(os.Getenv("COLUMNS")); i != 0 {
+		w = i
+	}
+	if t.ti.SetFgBgRGB != "" || t.ti.SetFgRGB != "" || t.ti.SetBgRGB != "" {
+		t.truecolor = true
+	}
+	// A user who wants to have his themes honored can
+	// set this environment variable.
+	if os.Getenv("TCELL_TRUECOLOR") == "disable" {
+		t.truecolor = false
+	}
+	t.colors = make(map[Color]Color)
+	t.palette = make([]Color, t.nColors())
+	for i := 0; i < t.nColors(); i++ {
+		t.palette[i] = Color(i) | ColorValid
+		// identity map for our builtin colors
+		t.colors[Color(i)|ColorValid] = Color(i) | ColorValid
+	}
+
+	t.quit = make(chan struct{})
+
+	t.Lock()
+	t.cx = -1
+	t.cy = -1
+	t.style = StyleDefault
+	t.cells.Resize(w, h)
+	t.cursorx = -1
+	t.cursory = -1
+	t.resize()
+	t.Unlock()
+
+	if err := t.engage(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (t *tScreen) prepareKeyMod(key Key, mod ModMask, val string) {
+	if val != "" {
+		// Do not override codes that already exist
+		if _, exist := t.keycodes[val]; !exist {
+			t.keyexist[key] = true
+			t.keycodes[val] = &tKeyCode{key: key, mod: mod}
+		}
+	}
+}
+
+func (t *tScreen) prepareKeyModReplace(key Key, replace Key, mod ModMask, val string) {
+	if val != "" {
+		// Do not override codes that already exist
+		if old, exist := t.keycodes[val]; !exist || old.key == replace {
+			t.keyexist[key] = true
+			t.keycodes[val] = &tKeyCode{key: key, mod: mod}
+		}
+	}
+}
+
+func (t *tScreen) prepareKeyModXTerm(key Key, val string) {
+
+	if strings.HasPrefix(val, "\x1b[") && strings.HasSuffix(val, "~") {
+
+		// Drop the trailing ~
+		val = val[:len(val)-1]
+
+		// These suffixes are calculated assuming Xterm style modifier suffixes.
+		// Please see https://invisible-island.net/xterm/ctlseqs/ctlseqs.pdf for
+		// more information (specifically "PC-Style Function Keys").
+		t.prepareKeyModReplace(key, key+12, ModShift, val+";2~")
+		t.prepareKeyModReplace(key, key+48, ModAlt, val+";3~")
+		t.prepareKeyModReplace(key, key+60, ModAlt|ModShift, val+";4~")
+		t.prepareKeyModReplace(key, key+24, ModCtrl, val+";5~")
+		t.prepareKeyModReplace(key, key+36, ModCtrl|ModShift, val+";6~")
+		t.prepareKeyMod(key, ModAlt|ModCtrl, val+";7~")
+		t.prepareKeyMod(key, ModShift|ModAlt|ModCtrl, val+";8~")
+		t.prepareKeyMod(key, ModMeta, val+";9~")
+		t.prepareKeyMod(key, ModMeta|ModShift, val+";10~")
+		t.prepareKeyMod(key, ModMeta|ModAlt, val+";11~")
+		t.prepareKeyMod(key, ModMeta|ModAlt|ModShift, val+";12~")
+		t.prepareKeyMod(key, ModMeta|ModCtrl, val+";13~")
+		t.prepareKeyMod(key, ModMeta|ModCtrl|ModShift, val+";14~")
+		t.prepareKeyMod(key, ModMeta|ModCtrl|ModAlt, val+";15~")
+		t.prepareKeyMod(key, ModMeta|ModCtrl|ModAlt|ModShift, val+";16~")
+	} else if strings.HasPrefix(val, "\x1bO") && len(val) == 3 {
+		val = val[2:]
+		t.prepareKeyModReplace(key, key+12, ModShift, "\x1b[1;2"+val)
+		t.prepareKeyModReplace(key, key+48, ModAlt, "\x1b[1;3"+val)
+		t.prepareKeyModReplace(key, key+24, ModCtrl, "\x1b[1;5"+val)
+		t.prepareKeyModReplace(key, key+36, ModCtrl|ModShift, "\x1b[1;6"+val)
+		t.prepareKeyModReplace(key, key+60, ModAlt|ModShift, "\x1b[1;4"+val)
+		t.prepareKeyMod(key, ModAlt|ModCtrl, "\x1b[1;7"+val)
+		t.prepareKeyMod(key, ModShift|ModAlt|ModCtrl, "\x1b[1;8"+val)
+		t.prepareKeyMod(key, ModMeta, "\x1b[1;9"+val)
+		t.prepareKeyMod(key, ModMeta|ModShift, "\x1b[1;10"+val)
+		t.prepareKeyMod(key, ModMeta|ModAlt, "\x1b[1;11"+val)
+		t.prepareKeyMod(key, ModMeta|ModAlt|ModShift, "\x1b[1;12"+val)
+		t.prepareKeyMod(key, ModMeta|ModCtrl, "\x1b[1;13"+val)
+		t.prepareKeyMod(key, ModMeta|ModCtrl|ModShift, "\x1b[1;14"+val)
+		t.prepareKeyMod(key, ModMeta|ModCtrl|ModAlt, "\x1b[1;15"+val)
+		t.prepareKeyMod(key, ModMeta|ModCtrl|ModAlt|ModShift, "\x1b[1;16"+val)
+	}
+}
+
+func (t *tScreen) prepareXtermModifiers() {
+	if t.ti.Modifiers != terminfo.ModifiersXTerm {
+		return
+	}
+	t.prepareKeyModXTerm(KeyRight, t.ti.KeyRight)
+	t.prepareKeyModXTerm(KeyLeft, t.ti.KeyLeft)
+	t.prepareKeyModXTerm(KeyUp, t.ti.KeyUp)
+	t.prepareKeyModXTerm(KeyDown, t.ti.KeyDown)
+	t.prepareKeyModXTerm(KeyInsert, t.ti.KeyInsert)
+	t.prepareKeyModXTerm(KeyDelete, t.ti.KeyDelete)
+	t.prepareKeyModXTerm(KeyPgUp, t.ti.KeyPgUp)
+	t.prepareKeyModXTerm(KeyPgDn, t.ti.KeyPgDn)
+	t.prepareKeyModXTerm(KeyHome, t.ti.KeyHome)
+	t.prepareKeyModXTerm(KeyEnd, t.ti.KeyEnd)
+	t.prepareKeyModXTerm(KeyF1, t.ti.KeyF1)
+	t.prepareKeyModXTerm(KeyF2, t.ti.KeyF2)
+	t.prepareKeyModXTerm(KeyF3, t.ti.KeyF3)
+	t.prepareKeyModXTerm(KeyF4, t.ti.KeyF4)
+	t.prepareKeyModXTerm(KeyF5, t.ti.KeyF5)
+	t.prepareKeyModXTerm(KeyF6, t.ti.KeyF6)
+	t.prepareKeyModXTerm(KeyF7, t.ti.KeyF7)
+	t.prepareKeyModXTerm(KeyF8, t.ti.KeyF8)
+	t.prepareKeyModXTerm(KeyF9, t.ti.KeyF9)
+	t.prepareKeyModXTerm(KeyF10, t.ti.KeyF10)
+	t.prepareKeyModXTerm(KeyF11, t.ti.KeyF11)
+	t.prepareKeyModXTerm(KeyF12, t.ti.KeyF12)
+}
+
+func (t *tScreen) prepareBracketedPaste() {
+	// Another workaround for lack of reporting in terminfo.
+	// We assume if the terminal has a mouse entry, that it
+	// offers bracketed paste.  But we allow specific overrides
+	// via our terminal database.
+	if t.ti.EnablePaste != "" {
+		t.enablePaste = t.ti.EnablePaste
+		t.disablePaste = t.ti.DisablePaste
+		t.prepareKey(keyPasteStart, t.ti.PasteStart)
+		t.prepareKey(keyPasteEnd, t.ti.PasteEnd)
+	} else if t.ti.Mouse != "" {
+		t.enablePaste = "\x1b[?2004h"
+		t.disablePaste = "\x1b[?2004l"
+		t.prepareKey(keyPasteStart, "\x1b[200~")
+		t.prepareKey(keyPasteEnd, "\x1b[201~")
+	}
+}
+
+func (t *tScreen) prepareKey(key Key, val string) {
+	t.prepareKeyMod(key, ModNone, val)
+}
+
+func (t *tScreen) prepareKeys() {
+	ti := t.ti
+	t.prepareKey(KeyBackspace, ti.KeyBackspace)
+	t.prepareKey(KeyF1, ti.KeyF1)
+	t.prepareKey(KeyF2, ti.KeyF2)
+	t.prepareKey(KeyF3, ti.KeyF3)
+	t.prepareKey(KeyF4, ti.KeyF4)
+	t.prepareKey(KeyF5, ti.KeyF5)
+	t.prepareKey(KeyF6, ti.KeyF6)
+	t.prepareKey(KeyF7, ti.KeyF7)
+	t.prepareKey(KeyF8, ti.KeyF8)
+	t.prepareKey(KeyF9, ti.KeyF9)
+	t.prepareKey(KeyF10, ti.KeyF10)
+	t.prepareKey(KeyF11, ti.KeyF11)
+	t.prepareKey(KeyF12, ti.KeyF12)
+	t.prepareKey(KeyF13, ti.KeyF13)
+	t.prepareKey(KeyF14, ti.KeyF14)
+	t.prepareKey(KeyF15, ti.KeyF15)
+	t.prepareKey(KeyF16, ti.KeyF16)
+	t.prepareKey(KeyF17, ti.KeyF17)
+	t.prepareKey(KeyF18, ti.KeyF18)
+	t.prepareKey(KeyF19, ti.KeyF19)
+	t.prepareKey(KeyF20, ti.KeyF20)
+	t.prepareKey(KeyF21, ti.KeyF21)
+	t.prepareKey(KeyF22, ti.KeyF22)
+	t.prepareKey(KeyF23, ti.KeyF23)
+	t.prepareKey(KeyF24, ti.KeyF24)
+	t.prepareKey(KeyF25, ti.KeyF25)
+	t.prepareKey(KeyF26, ti.KeyF26)
+	t.prepareKey(KeyF27, ti.KeyF27)
+	t.prepareKey(KeyF28, ti.KeyF28)
+	t.prepareKey(KeyF29, ti.KeyF29)
+	t.prepareKey(KeyF30, ti.KeyF30)
+	t.prepareKey(KeyF31, ti.KeyF31)
+	t.prepareKey(KeyF32, ti.KeyF32)
+	t.prepareKey(KeyF33, ti.KeyF33)
+	t.prepareKey(KeyF34, ti.KeyF34)
+	t.prepareKey(KeyF35, ti.KeyF35)
+	t.prepareKey(KeyF36, ti.KeyF36)
+	t.prepareKey(KeyF37, ti.KeyF37)
+	t.prepareKey(KeyF38, ti.KeyF38)
+	t.prepareKey(KeyF39, ti.KeyF39)
+	t.prepareKey(KeyF40, ti.KeyF40)
+	t.prepareKey(KeyF41, ti.KeyF41)
+	t.prepareKey(KeyF42, ti.KeyF42)
+	t.prepareKey(KeyF43, ti.KeyF43)
+	t.prepareKey(KeyF44, ti.KeyF44)
+	t.prepareKey(KeyF45, ti.KeyF45)
+	t.prepareKey(KeyF46, ti.KeyF46)
+	t.prepareKey(KeyF47, ti.KeyF47)
+	t.prepareKey(KeyF48, ti.KeyF48)
+	t.prepareKey(KeyF49, ti.KeyF49)
+	t.prepareKey(KeyF50, ti.KeyF50)
+	t.prepareKey(KeyF51, ti.KeyF51)
+	t.prepareKey(KeyF52, ti.KeyF52)
+	t.prepareKey(KeyF53, ti.KeyF53)
+	t.prepareKey(KeyF54, ti.KeyF54)
+	t.prepareKey(KeyF55, ti.KeyF55)
+	t.prepareKey(KeyF56, ti.KeyF56)
+	t.prepareKey(KeyF57, ti.KeyF57)
+	t.prepareKey(KeyF58, ti.KeyF58)
+	t.prepareKey(KeyF59, ti.KeyF59)
+	t.prepareKey(KeyF60, ti.KeyF60)
+	t.prepareKey(KeyF61, ti.KeyF61)
+	t.prepareKey(KeyF62, ti.KeyF62)
+	t.prepareKey(KeyF63, ti.KeyF63)
+	t.prepareKey(KeyF64, ti.KeyF64)
+	t.prepareKey(KeyInsert, ti.KeyInsert)
+	t.prepareKey(KeyDelete, ti.KeyDelete)
+	t.prepareKey(KeyHome, ti.KeyHome)
+	t.prepareKey(KeyEnd, ti.KeyEnd)
+	t.prepareKey(KeyUp, ti.KeyUp)
+	t.prepareKey(KeyDown, ti.KeyDown)
+	t.prepareKey(KeyLeft, ti.KeyLeft)
+	t.prepareKey(KeyRight, ti.KeyRight)
+	t.prepareKey(KeyPgUp, ti.KeyPgUp)
+	t.prepareKey(KeyPgDn, ti.KeyPgDn)
+	t.prepareKey(KeyHelp, ti.KeyHelp)
+	t.prepareKey(KeyPrint, ti.KeyPrint)
+	t.prepareKey(KeyCancel, ti.KeyCancel)
+	t.prepareKey(KeyExit, ti.KeyExit)
+	t.prepareKey(KeyBacktab, ti.KeyBacktab)
+
+	t.prepareKeyMod(KeyRight, ModShift, ti.KeyShfRight)
+	t.prepareKeyMod(KeyLeft, ModShift, ti.KeyShfLeft)
+	t.prepareKeyMod(KeyUp, ModShift, ti.KeyShfUp)
+	t.prepareKeyMod(KeyDown, ModShift, ti.KeyShfDown)
+	t.prepareKeyMod(KeyHome, ModShift, ti.KeyShfHome)
+	t.prepareKeyMod(KeyEnd, ModShift, ti.KeyShfEnd)
+	t.prepareKeyMod(KeyPgUp, ModShift, ti.KeyShfPgUp)
+	t.prepareKeyMod(KeyPgDn, ModShift, ti.KeyShfPgDn)
+
+	t.prepareKeyMod(KeyRight, ModCtrl, ti.KeyCtrlRight)
+	t.prepareKeyMod(KeyLeft, ModCtrl, ti.KeyCtrlLeft)
+	t.prepareKeyMod(KeyUp, ModCtrl, ti.KeyCtrlUp)
+	t.prepareKeyMod(KeyDown, ModCtrl, ti.KeyCtrlDown)
+	t.prepareKeyMod(KeyHome, ModCtrl, ti.KeyCtrlHome)
+	t.prepareKeyMod(KeyEnd, ModCtrl, ti.KeyCtrlEnd)
+
+	// Sadly, xterm handling of keycodes is somewhat erratic.  In
+	// particular, different codes are sent depending on application
+	// mode is in use or not, and the entries for many of these are
+	// simply absent from terminfo on many systems.  So we insert
+	// a number of escape sequences if they are not already used, in
+	// order to have the widest correct usage.  Note that prepareKey
+	// will not inject codes if the escape sequence is already known.
+	// We also only do this for terminals that have the application
+	// mode present.
+
+	// Cursor mode
+	if ti.EnterKeypad != "" {
+		t.prepareKey(KeyUp, "\x1b[A")
+		t.prepareKey(KeyDown, "\x1b[B")
+		t.prepareKey(KeyRight, "\x1b[C")
+		t.prepareKey(KeyLeft, "\x1b[D")
+		t.prepareKey(KeyEnd, "\x1b[F")
+		t.prepareKey(KeyHome, "\x1b[H")
+		t.prepareKey(KeyDelete, "\x1b[3~")
+		t.prepareKey(KeyHome, "\x1b[1~")
+		t.prepareKey(KeyEnd, "\x1b[4~")
+		t.prepareKey(KeyPgUp, "\x1b[5~")
+		t.prepareKey(KeyPgDn, "\x1b[6~")
+
+		// Application mode
+		t.prepareKey(KeyUp, "\x1bOA")
+		t.prepareKey(KeyDown, "\x1bOB")
+		t.prepareKey(KeyRight, "\x1bOC")
+		t.prepareKey(KeyLeft, "\x1bOD")
+		t.prepareKey(KeyHome, "\x1bOH")
+	}
+
+	t.prepareKey(keyPasteStart, ti.PasteStart)
+	t.prepareKey(keyPasteEnd, ti.PasteEnd)
+	t.prepareXtermModifiers()
+	t.prepareBracketedPaste()
+
+outer:
+	// Add key mappings for control keys.
+	for i := 0; i < ' '; i++ {
+		// Do not insert direct key codes for ambiguous keys.
+		// For example, ESC is used for lots of other keys, so
+		// when parsing this we don't want to fast path handling
+		// of it, but instead wait a bit before parsing it as in
+		// isolation.
+		for esc := range t.keycodes {
+			if []byte(esc)[0] == byte(i) {
+				continue outer
+			}
+		}
+
+		t.keyexist[Key(i)] = true
+
+		mod := ModCtrl
+		switch Key(i) {
+		case KeyBS, KeyTAB, KeyESC, KeyCR:
+			// directly type-able- no control sequence
+			mod = ModNone
+		}
+		t.keycodes[string(rune(i))] = &tKeyCode{key: Key(i), mod: mod}
+	}
+}
+
+func (t *tScreen) Fini() {
+	t.finiOnce.Do(t.finish)
+}
+
+func (t *tScreen) finish() {
+	close(t.quit)
+	t.finalize()
+}
+
+func (t *tScreen) SetStyle(style Style) {
+	t.Lock()
+	if !t.fini {
+		t.style = style
+	}
+	t.Unlock()
+}
+
+func (t *tScreen) Clear() {
+	t.Fill(' ', t.style)
+}
+
+func (t *tScreen) Fill(r rune, style Style) {
+	t.Lock()
+	if !t.fini {
+		t.cells.Fill(r, style)
+	}
+	t.Unlock()
+}
+
+func (t *tScreen) SetContent(x, y int, mainc rune, combc []rune, style Style) {
+	t.Lock()
+	if !t.fini {
+		t.cells.SetContent(x, y, mainc, combc, style)
+	}
+	t.Unlock()
+}
+
+func (t *tScreen) GetContent(x, y int) (rune, []rune, Style, int) {
+	t.Lock()
+	mainc, combc, style, width := t.cells.GetContent(x, y)
+	t.Unlock()
+	return mainc, combc, style, width
+}
+
+func (t *tScreen) SetCell(x, y int, style Style, ch ...rune) {
+	if len(ch) > 0 {
+		t.SetContent(x, y, ch[0], ch[1:], style)
+	} else {
+		t.SetContent(x, y, ' ', nil, style)
+	}
+}
+
+func (t *tScreen) encodeRune(r rune, buf []byte) []byte {
+
+	nb := make([]byte, 6)
+	ob := make([]byte, 6)
+	num := utf8.EncodeRune(ob, r)
+	ob = ob[:num]
+	dst := 0
+	var err error
+	if enc := t.encoder; enc != nil {
+		enc.Reset()
+		dst, _, err = enc.Transform(nb, ob, true)
+	}
+	if err != nil || dst == 0 || nb[0] == '\x1a' {
+		// Combining characters are elided
+		if len(buf) == 0 {
+			if acs, ok := t.acs[r]; ok {
+				buf = append(buf, []byte(acs)...)
+			} else if fb, ok := t.fallback[r]; ok {
+				buf = append(buf, []byte(fb)...)
+			} else {
+				buf = append(buf, '?')
+			}
+		}
+	} else {
+		buf = append(buf, nb[:dst]...)
+	}
+
+	return buf
+}
+
+func (t *tScreen) sendFgBg(fg Color, bg Color) {
+	ti := t.ti
+	if ti.Colors == 0 {
+		return
+	}
+	if fg == ColorReset || bg == ColorReset {
+		t.TPuts(ti.ResetFgBg)
+	}
+	if t.truecolor {
+		if ti.SetFgBgRGB != "" && fg.IsRGB() && bg.IsRGB() {
+			r1, g1, b1 := fg.RGB()
+			r2, g2, b2 := bg.RGB()
+			t.TPuts(ti.TParm(ti.SetFgBgRGB,
+				int(r1), int(g1), int(b1),
+				int(r2), int(g2), int(b2)))
+			return
+		}
+
+		if fg.IsRGB() && ti.SetFgRGB != "" {
+			r, g, b := fg.RGB()
+			t.TPuts(ti.TParm(ti.SetFgRGB, int(r), int(g), int(b)))
+			fg = ColorDefault
+		}
+
+		if bg.IsRGB() && ti.SetBgRGB != "" {
+			r, g, b := bg.RGB()
+			t.TPuts(ti.TParm(ti.SetBgRGB,
+				int(r), int(g), int(b)))
+			bg = ColorDefault
+		}
+	}
+
+	if fg.Valid() {
+		if v, ok := t.colors[fg]; ok {
+			fg = v
+		} else {
+			v = FindColor(fg, t.palette)
+			t.colors[fg] = v
+			fg = v
+		}
+	}
+
+	if bg.Valid() {
+		if v, ok := t.colors[bg]; ok {
+			bg = v
+		} else {
+			v = FindColor(bg, t.palette)
+			t.colors[bg] = v
+			bg = v
+		}
+	}
+
+	if fg.Valid() && bg.Valid() && ti.SetFgBg != "" {
+		t.TPuts(ti.TParm(ti.SetFgBg, int(fg&0xff), int(bg&0xff)))
+	} else {
+		if fg.Valid() && ti.SetFg != "" {
+			t.TPuts(ti.TParm(ti.SetFg, int(fg&0xff)))
+		}
+		if bg.Valid() && ti.SetBg != "" {
+			t.TPuts(ti.TParm(ti.SetBg, int(bg&0xff)))
+		}
+	}
+}
+
+func (t *tScreen) drawCell(x, y int) int {
+
+	ti := t.ti
+
+	mainc, combc, style, width := t.cells.GetContent(x, y)
+	if !t.cells.Dirty(x, y) {
+		return width
+	}
+
+	if y == t.h-1 && x == t.w-1 && t.ti.AutoMargin && ti.InsertChar != "" {
+		// our solution is somewhat goofy.
+		// we write to the second to the last cell what we want in the last cell, then we
+		// insert a character at that 2nd to last position to shift the last column into
+		// place, then we rewrite that 2nd to last cell.  Old terminals suck.
+		t.TPuts(ti.TGoto(x-1, y))
+		defer func() {
+			t.TPuts(ti.TGoto(x-1, y))
+			t.TPuts(ti.InsertChar)
+			t.cy = y
+			t.cx = x - 1
+			t.cells.SetDirty(x-1, y, true)
+			_ = t.drawCell(x-1, y)
+			t.TPuts(t.ti.TGoto(0, 0))
+			t.cy = 0
+			t.cx = 0
+		}()
+	} else if t.cy != y || t.cx != x {
+		t.TPuts(ti.TGoto(x, y))
+		t.cx = x
+		t.cy = y
+	}
+
+	if style == StyleDefault {
+		style = t.style
+	}
+	if style != t.curstyle {
+		fg, bg, attrs := style.Decompose()
+
+		t.TPuts(ti.AttrOff)
+
+		t.sendFgBg(fg, bg)
+		if attrs&AttrBold != 0 {
+			t.TPuts(ti.Bold)
+		}
+		if attrs&AttrUnderline != 0 {
+			t.TPuts(ti.Underline)
+		}
+		if attrs&AttrReverse != 0 {
+			t.TPuts(ti.Reverse)
+		}
+		if attrs&AttrBlink != 0 {
+			t.TPuts(ti.Blink)
+		}
+		if attrs&AttrDim != 0 {
+			t.TPuts(ti.Dim)
+		}
+		if attrs&AttrItalic != 0 {
+			t.TPuts(ti.Italic)
+		}
+		if attrs&AttrStrikeThrough != 0 {
+			t.TPuts(ti.StrikeThrough)
+		}
+		t.curstyle = style
+	}
+	// now emit runes - taking care to not overrun width with a
+	// wide character, and to ensure that we emit exactly one regular
+	// character followed up by any residual combing characters
+
+	if width < 1 {
+		width = 1
+	}
+
+	var str string
+
+	buf := make([]byte, 0, 6)
+
+	buf = t.encodeRune(mainc, buf)
+	for _, r := range combc {
+		buf = t.encodeRune(r, buf)
+	}
+
+	str = string(buf)
+	if width > 1 && str == "?" {
+		// No FullWidth character support
+		str = "? "
+		t.cx = -1
+	}
+
+	if x > t.w-width {
+		// too wide to fit; emit a single space instead
+		width = 1
+		str = " "
+	}
+	t.writeString(str)
+	t.cx += width
+	t.cells.SetDirty(x, y, false)
+	if width > 1 {
+		t.cx = -1
+	}
+
+	return width
+}
+
+func (t *tScreen) ShowCursor(x, y int) {
+	t.Lock()
+	t.cursorx = x
+	t.cursory = y
+	t.Unlock()
+}
+
+func (t *tScreen) HideCursor() {
+	t.ShowCursor(-1, -1)
+}
+
+func (t *tScreen) showCursor() {
+
+	x, y := t.cursorx, t.cursory
+	w, h := t.cells.Size()
+	if x < 0 || y < 0 || x >= w || y >= h {
+		t.hideCursor()
+		return
+	}
+	t.TPuts(t.ti.TGoto(x, y))
+	t.TPuts(t.ti.ShowCursor)
+	t.cx = x
+	t.cy = y
+}
+
+// writeString sends a string to the terminal. The string is sent as-is and
+// this function does not expand inline padding indications (of the form
+// $<[delay]> where [delay] is msec). In order to have these expanded, use
+// TPuts. If the screen is "buffering", the string is collected in a buffer,
+// with the intention that the entire buffer be sent to the terminal in one
+// write operation at some point later.
+func (t *tScreen) writeString(s string) {
+	if t.buffering {
+		_, _ = io.WriteString(&t.buf, s)
+	} else {
+		_, _ = io.WriteString(t.tty, s)
+	}
+}
+
+func (t *tScreen) TPuts(s string) {
+	if t.buffering {
+		t.ti.TPuts(&t.buf, s)
+	} else {
+		t.ti.TPuts(t.tty, s)
+	}
+}
+
+func (t *tScreen) Show() {
+	t.Lock()
+	if !t.fini {
+		t.resize()
+		t.draw()
+	}
+	t.Unlock()
+}
+
+func (t *tScreen) clearScreen() {
+	fg, bg, _ := t.style.Decompose()
+	t.sendFgBg(fg, bg)
+	t.TPuts(t.ti.Clear)
+	t.clear = false
+}
+
+func (t *tScreen) hideCursor() {
+	// does not update cursor position
+	if t.ti.HideCursor != "" {
+		t.TPuts(t.ti.HideCursor)
+	} else {
+		// No way to hide cursor, stick it
+		// at bottom right of screen
+		t.cx, t.cy = t.cells.Size()
+		t.TPuts(t.ti.TGoto(t.cx, t.cy))
+	}
+}
+
+func (t *tScreen) draw() {
+	// clobber cursor position, because we're gonna change it all
+	t.cx = -1
+	t.cy = -1
+
+	t.buf.Reset()
+	t.buffering = true
+	defer func() {
+		t.buffering = false
+	}()
+
+	// hide the cursor while we move stuff around
+	t.hideCursor()
+
+	if t.clear {
+		t.clearScreen()
+	}
+
+	for y := 0; y < t.h; y++ {
+		for x := 0; x < t.w; x++ {
+			width := t.drawCell(x, y)
+			if width > 1 {
+				if x+1 < t.w {
+					// this is necessary so that if we ever
+					// go back to drawing that cell, we
+					// actually will *draw* it.
+					t.cells.SetDirty(x+1, y, true)
+				}
+			}
+			x += width - 1
+		}
+	}
+
+	// restore the cursor
+	t.showCursor()
+
+	_, _ = t.buf.WriteTo(t.tty)
+}
+
+func (t *tScreen) EnableMouse(flags ...MouseFlags) {
+	var f MouseFlags
+	flagsPresent := false
+	for _, flag := range flags {
+		f |= flag
+		flagsPresent = true
+	}
+	if !flagsPresent {
+		f = MouseMotionEvents
+	}
+
+	t.Lock()
+	t.mouseFlags = f
+	t.enableMouse(f)
+	t.Unlock()
+}
+
+func (t *tScreen) enableMouse(f MouseFlags) {
+	// Rather than using terminfo to find mouse escape sequences, we rely on the fact that
+	// pretty much *every* terminal that supports mouse tracking follows the
+	// XTerm standards (the modern ones).
+	if len(t.mouse) != 0 {
+		// start by disabling all tracking.
+		t.TPuts("\x1b[?1000l\x1b[?1002l\x1b[?1003l\x1b[?1006l")
+		if f&MouseMotionEvents != 0 {
+			t.TPuts("\x1b[?1003h\x1b[?1006h")
+		} else if f&MouseDragEvents != 0 {
+			t.TPuts("\x1b[?1002h\x1b[?1006h")
+		} else if f&MouseButtonEvents != 0 {
+			t.TPuts("\x1b[?1000h\x1b[?1006h")
+		}
+	}
+}
+
+func (t *tScreen) DisableMouse() {
+	t.Lock()
+	t.mouseFlags = 0
+	t.enableMouse(0)
+	t.Unlock()
+}
+
+func (t *tScreen) EnablePaste() {
+	t.Lock()
+	t.pasteEnabled = true
+	t.enablePasting(true)
+	t.Unlock()
+}
+
+func (t *tScreen) DisablePaste() {
+	t.Lock()
+	t.pasteEnabled = false
+	t.enablePasting(false)
+	t.Unlock()
+}
+
+func (t *tScreen) enablePasting(on bool) {
+	var s string
+	if on {
+		s = t.enablePaste
+	} else {
+		s = t.disablePaste
+	}
+	if s != "" {
+		t.TPuts(s)
+	}
+}
+
+func (t *tScreen) Size() (int, int) {
+	t.Lock()
+	w, h := t.w, t.h
+	t.Unlock()
+	return w, h
+}
+
+func (t *tScreen) resize() {
+	if w, h, e := t.tty.WindowSize(); e == nil {
+		if w != t.w || h != t.h {
+			t.cx = -1
+			t.cy = -1
+
+			t.cells.Resize(w, h)
+			t.cells.Invalidate()
+			t.h = h
+			t.w = w
+			ev := NewEventResize(w, h)
+			_ = t.PostEvent(ev)
+		}
+	}
+}
+
+func (t *tScreen) Colors() int {
+	// this doesn't change, no need for lock
+	if t.truecolor {
+		return 1 << 24
+	}
+	return t.ti.Colors
+}
+
+// nColors returns the size of the built-in palette.
+// This is distinct from Colors(), as it will generally
+// always be a small number. (<= 256)
+func (t *tScreen) nColors() int {
+	return t.ti.Colors
+}
+
+func (t *tScreen) ChannelEvents(ch chan<- Event, quit <-chan struct{}) {
+	defer close(ch)
+	for {
+		select {
+		case <-quit:
+			return
+		case <-t.quit:
+			return
+		case ev := <-t.evch:
+			select {
+			case <-quit:
+				return
+			case <-t.quit:
+				return
+			case ch <- ev:
+			}
+		}
+	}
+}
+
+func (t *tScreen) PollEvent() Event {
+	select {
+	case <-t.quit:
+		return nil
+	case ev := <-t.evch:
+		return ev
+	}
+}
+
+func (t *tScreen) HasPendingEvent() bool {
+	return len(t.evch) > 0
+}
+
+// vtACSNames is a map of bytes defined by terminfo that are used in
+// the terminals Alternate Character Set to represent other glyphs.
+// For example, the upper left corner of the box drawing set can be
+// displayed by printing "l" while in the alternate character set.
+// Its not quite that simple, since the "l" is the terminfo name,
+// and it may be necessary to use a different character based on
+// the terminal implementation (or the terminal may lack support for
+// this altogether).  See buildAcsMap below for detail.
+var vtACSNames = map[byte]rune{
+	'+': RuneRArrow,
+	',': RuneLArrow,
+	'-': RuneUArrow,
+	'.': RuneDArrow,
+	'0': RuneBlock,
+	'`': RuneDiamond,
+	'a': RuneCkBoard,
+	'b': '␉', // VT100, Not defined by terminfo
+	'c': '␌', // VT100, Not defined by terminfo
+	'd': '␋', // VT100, Not defined by terminfo
+	'e': '␊', // VT100, Not defined by terminfo
+	'f': RuneDegree,
+	'g': RunePlMinus,
+	'h': RuneBoard,
+	'i': RuneLantern,
+	'j': RuneLRCorner,
+	'k': RuneURCorner,
+	'l': RuneULCorner,
+	'm': RuneLLCorner,
+	'n': RunePlus,
+	'o': RuneS1,
+	'p': RuneS3,
+	'q': RuneHLine,
+	'r': RuneS7,
+	's': RuneS9,
+	't': RuneLTee,
+	'u': RuneRTee,
+	'v': RuneBTee,
+	'w': RuneTTee,
+	'x': RuneVLine,
+	'y': RuneLEqual,
+	'z': RuneGEqual,
+	'{': RunePi,
+	'|': RuneNEqual,
+	'}': RuneSterling,
+	'~': RuneBullet,
+}
+
+// buildAcsMap builds a map of characters that we translate from Unicode to
+// alternate character encodings.  To do this, we use the standard VT100 ACS
+// maps.  This is only done if the terminal lacks support for Unicode; we
+// always prefer to emit Unicode glyphs when we are able.
+func (t *tScreen) buildAcsMap() {
+	acsstr := t.ti.AltChars
+	t.acs = make(map[rune]string)
+	for len(acsstr) > 2 {
+		srcv := acsstr[0]
+		dstv := string(acsstr[1])
+		if r, ok := vtACSNames[srcv]; ok {
+			t.acs[r] = t.ti.EnterAcs + dstv + t.ti.ExitAcs
+		}
+		acsstr = acsstr[2:]
+	}
+}
+
+func (t *tScreen) PostEventWait(ev Event) {
+	t.evch <- ev
+}
+
+func (t *tScreen) PostEvent(ev Event) error {
+	select {
+	case t.evch <- ev:
+		return nil
+	default:
+		return ErrEventQFull
+	}
+}
+
+func (t *tScreen) clip(x, y int) (int, int) {
+	w, h := t.cells.Size()
+	if x < 0 {
+		x = 0
+	}
+	if y < 0 {
+		y = 0
+	}
+	if x > w-1 {
+		x = w - 1
+	}
+	if y > h-1 {
+		y = h - 1
+	}
+	return x, y
+}
+
+// buildMouseEvent returns an event based on the supplied coordinates and button
+// state. Note that the screen's mouse button state is updated based on the
+// input to this function (i.e. it mutates the receiver).
+func (t *tScreen) buildMouseEvent(x, y, btn int) *EventMouse {
+
+	// XTerm mouse events only report at most one button at a time,
+	// which may include a wheel button.  Wheel motion events are
+	// reported as single impulses, while other button events are reported
+	// as separate press & release events.
+
+	button := ButtonNone
+	mod := ModNone
+
+	// Mouse wheel has bit 6 set, no release events.  It should be noted
+	// that wheel events are sometimes misdelivered as mouse button events
+	// during a click-drag, so we debounce these, considering them to be
+	// button press events unless we see an intervening release event.
+	switch btn & 0x43 {
+	case 0:
+		button = Button1
+		t.wasbtn = true
+	case 1:
+		button = Button3 // Note we prefer to treat right as button 2
+		t.wasbtn = true
+	case 2:
+		button = Button2 // And the middle button as button 3
+		t.wasbtn = true
+	case 3:
+		button = ButtonNone
+		t.wasbtn = false
+	case 0x40:
+		if !t.wasbtn {
+			button = WheelUp
+		} else {
+			button = Button1
+		}
+	case 0x41:
+		if !t.wasbtn {
+			button = WheelDown
+		} else {
+			button = Button2
+		}
+	}
+
+	if btn&0x4 != 0 {
+		mod |= ModShift
+	}
+	if btn&0x8 != 0 {
+		mod |= ModAlt
+	}
+	if btn&0x10 != 0 {
+		mod |= ModCtrl
+	}
+
+	// Some terminals will report mouse coordinates outside the
+	// screen, especially with click-drag events.  Clip the coordinates
+	// to the screen in that case.
+	x, y = t.clip(x, y)
+
+	return NewEventMouse(x, y, button, mod)
+}
+
+// parseSgrMouse attempts to locate an SGR mouse record at the start of the
+// buffer.  It returns true, true if it found one, and the associated bytes
+// be removed from the buffer.  It returns true, false if the buffer might
+// contain such an event, but more bytes are necessary (partial match), and
+// false, false if the content is definitely *not* an SGR mouse record.
+func (t *tScreen) parseSgrMouse(buf *bytes.Buffer, evs *[]Event) (bool, bool) {
+
+	b := buf.Bytes()
+
+	var x, y, btn, state int
+	dig := false
+	neg := false
+	motion := false
+	i := 0
+	val := 0
+
+	for i = range b {
+		switch b[i] {
+		case '\x1b':
+			if state != 0 {
+				return false, false
+			}
+			state = 1
+
+		case '\x9b':
+			if state != 0 {
+				return false, false
+			}
+			state = 2
+
+		case '[':
+			if state != 1 {
+				return false, false
+			}
+			state = 2
+
+		case '<':
+			if state != 2 {
+				return false, false
+			}
+			val = 0
+			dig = false
+			neg = false
+			state = 3
+
+		case '-':
+			if state != 3 && state != 4 && state != 5 {
+				return false, false
+			}
+			if dig || neg {
+				return false, false
+			}
+			neg = true // stay in state
+
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			if state != 3 && state != 4 && state != 5 {
+				return false, false
+			}
+			val *= 10
+			val += int(b[i] - '0')
+			dig = true // stay in state
+
+		case ';':
+			if neg {
+				val = -val
+			}
+			switch state {
+			case 3:
+				btn, val = val, 0
+				neg, dig, state = false, false, 4
+			case 4:
+				x, val = val-1, 0
+				neg, dig, state = false, false, 5
+			default:
+				return false, false
+			}
+
+		case 'm', 'M':
+			if state != 5 {
+				return false, false
+			}
+			if neg {
+				val = -val
+			}
+			y = val - 1
+
+			motion = (btn & 32) != 0
+			btn &^= 32
+			if b[i] == 'm' {
+				// mouse release, clear all buttons
+				btn |= 3
+				btn &^= 0x40
+				t.buttondn = false
+			} else if motion {
+				/*
+				 * Some broken terminals appear to send
+				 * mouse button one motion events, instead of
+				 * encoding 35 (no buttons) into these events.
+				 * We resolve these by looking for a non-motion
+				 * event first.
+				 */
+				if !t.buttondn {
+					btn |= 3
+					btn &^= 0x40
+				}
+			} else {
+				t.buttondn = true
+			}
+			// consume the event bytes
+			for i >= 0 {
+				_, _ = buf.ReadByte()
+				i--
+			}
+			*evs = append(*evs, t.buildMouseEvent(x, y, btn))
+			return true, true
+		}
+	}
+
+	// incomplete & inconclusive at this point
+	return true, false
+}
+
+// parseXtermMouse is like parseSgrMouse, but it parses a legacy
+// X11 mouse record.
+func (t *tScreen) parseXtermMouse(buf *bytes.Buffer, evs *[]Event) (bool, bool) {
+
+	b := buf.Bytes()
+
+	state := 0
+	btn := 0
+	x := 0
+	y := 0
+
+	for i := range b {
+		switch state {
+		case 0:
+			switch b[i] {
+			case '\x1b':
+				state = 1
+			case '\x9b':
+				state = 2
+			default:
+				return false, false
+			}
+		case 1:
+			if b[i] != '[' {
+				return false, false
+			}
+			state = 2
+		case 2:
+			if b[i] != 'M' {
+				return false, false
+			}
+			state++
+		case 3:
+			btn = int(b[i])
+			state++
+		case 4:
+			x = int(b[i]) - 32 - 1
+			state++
+		case 5:
+			y = int(b[i]) - 32 - 1
+			for i >= 0 {
+				_, _ = buf.ReadByte()
+				i--
+			}
+			*evs = append(*evs, t.buildMouseEvent(x, y, btn))
+			return true, true
+		}
+	}
+	return true, false
+}
+
+func (t *tScreen) parseFunctionKey(buf *bytes.Buffer, evs *[]Event) (bool, bool) {
+	b := buf.Bytes()
+	partial := false
+	for e, k := range t.keycodes {
+		esc := []byte(e)
+		if (len(esc) == 1) && (esc[0] == '\x1b') {
+			continue
+		}
+		if bytes.HasPrefix(b, esc) {
+			// matched
+			var r rune
+			if len(esc) == 1 {
+				r = rune(b[0])
+			}
+			mod := k.mod
+			if t.escaped {
+				mod |= ModAlt
+				t.escaped = false
+			}
+			switch k.key {
+			case keyPasteStart:
+				*evs = append(*evs, NewEventPaste(true))
+			case keyPasteEnd:
+				*evs = append(*evs, NewEventPaste(false))
+			default:
+				*evs = append(*evs, NewEventKey(k.key, r, mod))
+			}
+			for i := 0; i < len(esc); i++ {
+				_, _ = buf.ReadByte()
+			}
+			return true, true
+		}
+		if bytes.HasPrefix(esc, b) {
+			partial = true
+		}
+	}
+	return partial, false
+}
+
+func (t *tScreen) parseRune(buf *bytes.Buffer, evs *[]Event) (bool, bool) {
+	b := buf.Bytes()
+	if b[0] >= ' ' && b[0] <= 0x7F {
+		// printable ASCII easy to deal with -- no encodings
+		mod := ModNone
+		if t.escaped {
+			mod = ModAlt
+			t.escaped = false
+		}
+		*evs = append(*evs, NewEventKey(KeyRune, rune(b[0]), mod))
+		_, _ = buf.ReadByte()
+		return true, true
+	}
+
+	if b[0] < 0x80 {
+		// Low numbered values are control keys, not runes.
+		return false, false
+	}
+
+	utf := make([]byte, 12)
+	for l := 1; l <= len(b); l++ {
+		t.decoder.Reset()
+		nOut, nIn, e := t.decoder.Transform(utf, b[:l], true)
+		if e == transform.ErrShortSrc {
+			continue
+		}
+		if nOut != 0 {
+			r, _ := utf8.DecodeRune(utf[:nOut])
+			if r != utf8.RuneError {
+				mod := ModNone
+				if t.escaped {
+					mod = ModAlt
+					t.escaped = false
+				}
+				*evs = append(*evs, NewEventKey(KeyRune, r, mod))
+			}
+			for nIn > 0 {
+				_, _ = buf.ReadByte()
+				nIn--
+			}
+			return true, true
+		}
+	}
+	// Looks like potential escape
+	return true, false
+}
+
+func (t *tScreen) scanInput(buf *bytes.Buffer, expire bool) {
+	evs := t.collectEventsFromInput(buf, expire)
+
+	for _, ev := range evs {
+		t.PostEventWait(ev)
+	}
+}
+
+// Return an array of Events extracted from the supplied buffer. This is done
+// while holding the screen's lock - the events can then be queued for
+// application processing with the lock released.
+func (t *tScreen) collectEventsFromInput(buf *bytes.Buffer, expire bool) []Event {
+
+	res := make([]Event, 0, 20)
+
+	t.Lock()
+	defer t.Unlock()
+
+	for {
+		b := buf.Bytes()
+		if len(b) == 0 {
+			buf.Reset()
+			return res
+		}
+
+		partials := 0
+
+		if part, comp := t.parseRune(buf, &res); comp {
+			continue
+		} else if part {
+			partials++
+		}
+
+		if part, comp := t.parseFunctionKey(buf, &res); comp {
+			continue
+		} else if part {
+			partials++
+		}
+
+		// Only parse mouse records if this term claims to have
+		// mouse support
+
+		if t.ti.Mouse != "" {
+			if part, comp := t.parseXtermMouse(buf, &res); comp {
+				continue
+			} else if part {
+				partials++
+			}
+
+			if part, comp := t.parseSgrMouse(buf, &res); comp {
+				continue
+			} else if part {
+				partials++
+			}
+		}
+
+		if partials == 0 || expire {
+			if b[0] == '\x1b' {
+				if len(b) == 1 {
+					res = append(res, NewEventKey(KeyEsc, 0, ModNone))
+					t.escaped = false
+				} else {
+					t.escaped = true
+				}
+				_, _ = buf.ReadByte()
+				continue
+			}
+			// Nothing was going to match, or we timed out
+			// waiting for more data -- just deliver the characters
+			// to the app & let them sort it out.  Possibly we
+			// should only do this for control characters like ESC.
+			by, _ := buf.ReadByte()
+			mod := ModNone
+			if t.escaped {
+				t.escaped = false
+				mod = ModAlt
+			}
+			res = append(res, NewEventKey(KeyRune, rune(by), mod))
+			continue
+		}
+
+		// well we have some partial data, wait until we get
+		// some more
+		break
+	}
+
+	return res
+}
+
+func (t *tScreen) mainLoop(stopQ chan struct{}) {
+	defer t.wg.Done()
+	buf := &bytes.Buffer{}
+	for {
+		select {
+		case <-stopQ:
+			return
+		case <-t.quit:
+			return
+		case <-t.resizeQ:
+			t.Lock()
+			t.cx = -1
+			t.cy = -1
+			t.resize()
+			t.cells.Invalidate()
+			t.draw()
+			t.Unlock()
+			continue
+		case <-t.keytimer.C:
+			// If the timer fired, and the current time
+			// is after the expiration of the escape sequence,
+			// then we assume the escape sequence reached it's
+			// conclusion, and process the chunk independently.
+			// This lets us detect conflicts such as a lone ESC.
+			if buf.Len() > 0 {
+				if time.Now().After(t.keyexpire) {
+					t.scanInput(buf, true)
+				}
+			}
+			if buf.Len() > 0 {
+				if !t.keytimer.Stop() {
+					select {
+					case <-t.keytimer.C:
+					default:
+					}
+				}
+				t.keytimer.Reset(time.Millisecond * 50)
+			}
+		case chunk := <-t.keychan:
+			buf.Write(chunk)
+			t.keyexpire = time.Now().Add(time.Millisecond * 50)
+			t.scanInput(buf, false)
+			if !t.keytimer.Stop() {
+				select {
+				case <-t.keytimer.C:
+				default:
+				}
+			}
+			if buf.Len() > 0 {
+				t.keytimer.Reset(time.Millisecond * 50)
+			}
+		}
+	}
+}
+
+func (t *tScreen) inputLoop(stopQ chan struct{}) {
+
+	defer t.wg.Done()
+	for {
+		select {
+		case <-stopQ:
+			return
+		default:
+		}
+		chunk := make([]byte, 128)
+		n, e := t.tty.Read(chunk)
+		switch e {
+		case nil:
+		default:
+			_ = t.PostEvent(NewEventError(e))
+			return
+		}
+		if n > 0 {
+			t.keychan <- chunk[:n]
+		}
+	}
+}
+
+func (t *tScreen) Sync() {
+	t.Lock()
+	t.cx = -1
+	t.cy = -1
+	if !t.fini {
+		t.resize()
+		t.clear = true
+		t.cells.Invalidate()
+		t.draw()
+	}
+	t.Unlock()
+}
+
+func (t *tScreen) CharacterSet() string {
+	return t.charset
+}
+
+func (t *tScreen) RegisterRuneFallback(orig rune, fallback string) {
+	t.Lock()
+	t.fallback[orig] = fallback
+	t.Unlock()
+}
+
+func (t *tScreen) UnregisterRuneFallback(orig rune) {
+	t.Lock()
+	delete(t.fallback, orig)
+	t.Unlock()
+}
+
+func (t *tScreen) CanDisplay(r rune, checkFallbacks bool) bool {
+
+	if enc := t.encoder; enc != nil {
+		nb := make([]byte, 6)
+		ob := make([]byte, 6)
+		num := utf8.EncodeRune(ob, r)
+
+		enc.Reset()
+		dst, _, err := enc.Transform(nb, ob[:num], true)
+		if dst != 0 && err == nil && nb[0] != '\x1A' {
+			return true
+		}
+	}
+	// Terminal fallbacks always permitted, since we assume they are
+	// basically nearly perfect renditions.
+	if _, ok := t.acs[r]; ok {
+		return true
+	}
+	if !checkFallbacks {
+		return false
+	}
+	if _, ok := t.fallback[r]; ok {
+		return true
+	}
+	return false
+}
+
+func (t *tScreen) HasMouse() bool {
+	return len(t.mouse) != 0
+}
+
+func (t *tScreen) HasKey(k Key) bool {
+	if k == KeyRune {
+		return true
+	}
+	return t.keyexist[k]
+}
+
+func (t *tScreen) Resize(int, int, int, int) {}
+
+func (t *tScreen) Suspend() error {
+	t.disengage()
+	return nil
+}
+
+func (t *tScreen) Resume() error {
+	return t.engage()
+}
+
+// engage is used to place the terminal in raw mode and establish screen size, etc.
+// Thing of this is as tcell "engaging" the clutch, as it's going to be driving the
+// terminal interface.
+func (t *tScreen) engage() error {
+	t.Lock()
+	defer t.Unlock()
+	if t.tty == nil {
+		return ErrNoScreen
+	}
+	t.tty.NotifyResize(func() {
+		select {
+		case t.resizeQ <- true:
+		default:
+		}
+	})
+	if t.running {
+		return errors.New("already engaged")
+	}
+	if err := t.tty.Start(); err != nil {
+		return err
+	}
+	t.running = true
+	if w, h, err := t.tty.WindowSize(); err == nil && w != 0 && h != 0 {
+		t.cells.Resize(w, h)
+	}
+	stopQ := make(chan struct{})
+	t.stopQ = stopQ
+	t.enableMouse(t.mouseFlags)
+	t.enablePasting(t.pasteEnabled)
+
+	ti := t.ti
+	t.TPuts(ti.EnterCA)
+	t.TPuts(ti.EnterKeypad)
+	t.TPuts(ti.HideCursor)
+	t.TPuts(ti.EnableAcs)
+	t.TPuts(ti.Clear)
+
+	t.wg.Add(2)
+	go t.inputLoop(stopQ)
+	go t.mainLoop(stopQ)
+	return nil
+}
+
+// disengage is used to release the terminal back to support from the caller.
+// Think of this as tcell disengaging the clutch, so that another application
+// can take over the terminal interface.  This restores the TTY mode that was
+// present when the application was first started.
+func (t *tScreen) disengage() {
+
+	t.Lock()
+	if !t.running {
+		t.Unlock()
+		return
+	}
+	t.running = false
+	stopQ := t.stopQ
+	close(stopQ)
+	_ = t.tty.Drain()
+	t.Unlock()
+
+	t.tty.NotifyResize(nil)
+	// wait for everything to shut down
+	t.wg.Wait()
+
+	// shutdown the screen and disable special modes (e.g. mouse and bracketed paste)
+	ti := t.ti
+	t.cells.Resize(0, 0)
+	t.TPuts(ti.ShowCursor)
+	t.TPuts(ti.ResetFgBg)
+	t.TPuts(ti.AttrOff)
+	t.TPuts(ti.Clear)
+	t.TPuts(ti.ExitCA)
+	t.TPuts(ti.ExitKeypad)
+	t.enableMouse(0)
+	t.enablePasting(false)
+
+	_ = t.tty.Stop()
+}
+
+// Beep emits a beep to the terminal.
+func (t *tScreen) Beep() error {
+	t.writeString(string(byte(7)))
+	return nil
+}
+
+// finalize is used to at application shutdown, and restores the terminal
+// to it's initial state.  It should not be called more than once.
+func (t *tScreen) finalize() {
+	t.disengage()
+	_ = t.tty.Close()
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/tscreen_stub.go b/vendor/github.com/gdamore/tcell/v2/tscreen_stub.go
new file mode 100644
index 0000000..1611cb5
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/tscreen_stub.go
@@ -0,0 +1,25 @@
+// +build js plan9 windows
+
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+// NB: We might someday wish to move Windows to this model.   However,
+// that would probably mean sacrificing some of the richer key reporting
+// that we can obtain with the console API present on Windows.
+
+func (t *tScreen) initialize() error {
+	return ErrNoScreen
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/tscreen_unix.go b/vendor/github.com/gdamore/tcell/v2/tscreen_unix.go
new file mode 100644
index 0000000..1eb7504
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/tscreen_unix.go
@@ -0,0 +1,31 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
+
+package tcell
+
+// initialize is used at application startup, and sets up the initial values
+// including file descriptors used for terminals and saving the initial state
+// so that it can be restored when the application terminates.
+func (t *tScreen) initialize() error {
+	var err error
+	if t.tty == nil {
+		t.tty, err = NewDevTty()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
diff --git a/vendor/github.com/gdamore/tcell/v2/tty.go b/vendor/github.com/gdamore/tcell/v2/tty.go
new file mode 100644
index 0000000..567b041
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/tty.go
@@ -0,0 +1,56 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package tcell
+
+import "io"
+
+// Tty is an abstraction of a tty (traditionally "teletype").  This allows applications to
+// provide for alternate backends, as there are situations where the traditional /dev/tty
+// does not work, or where more flexible handling is required.  This interface is for use
+// with the terminfo-style based API.  It extends the io.ReadWriter API.  It is reasonable
+// that the implementation might choose to use different underlying files for the Reader
+// and Writer sides of this API, as part of it's internal implementation.
+type Tty interface {
+	// Start is used to activate the Tty for use.  Upon return the terminal should be
+	// in raw mode, non-blocking, etc.  The implementation should take care of saving
+	// any state that is required so that it may be restored when Stop is called.
+	Start() error
+
+	// Stop is used to stop using this Tty instance.  This may be a suspend, so that other
+	// terminal based applications can run in the foreground.  Implementations should
+	// restore any state collected at Start(), and return to ordinary blocking mode, etc.
+	// Drain is called first to drain the input.  Once this is called, no more Read
+	// or Write calls will be made until Start is called again.
+	Stop() error
+
+	// Drain is called before Stop, and ensures that the reader will wake up appropriately
+	// if it was blocked.  This workaround is required for /dev/tty on certain UNIX systems
+	// to ensure that Read() does not block forever.  This typically arranges for the tty driver
+	// to send data immediately (e.g. VMIN and VTIME both set zero) and sets a deadline on input.
+	// Implementations may reasonably make this a no-op.  There will still be control sequences
+	// emitted between the time this is called, and when Stop is called.
+	Drain() error
+
+	// NotifyResize is used register a callback when the tty thinks the dimensions have
+	// changed.  The standard UNIX implementation links this to a handler for SIGWINCH.
+	// If the supplied callback is nil, then any handler should be unregistered.
+	NotifyResize(cb func())
+
+	// WindowSize is called to determine the terminal dimensions.  This might be determined
+	// by an ioctl or other means.
+	WindowSize() (width int, height int, err error)
+
+	io.ReadWriteCloser
+}
\ No newline at end of file
diff --git a/vendor/github.com/gdamore/tcell/v2/tty_unix.go b/vendor/github.com/gdamore/tcell/v2/tty_unix.go
new file mode 100644
index 0000000..0c6ea78
--- /dev/null
+++ b/vendor/github.com/gdamore/tcell/v2/tty_unix.go
@@ -0,0 +1,190 @@
+// Copyright 2021 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
+
+package tcell
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/signal"
+	"strconv"
+	"sync"
+	"syscall"
+	"time"
+
+	"golang.org/x/term"
+)
+
+// devTty is an implementation of the Tty API based upon /dev/tty.
+type devTty struct {
+	fd    int
+	f     *os.File
+	of    *os.File // the first open of /dev/tty
+	saved *term.State
+	sig   chan os.Signal
+	cb    func()
+	stopQ chan struct{}
+	dev   string
+	wg    sync.WaitGroup
+	l     sync.Mutex
+}
+
+func (tty *devTty) Read(b []byte) (int, error) {
+	return tty.f.Read(b)
+}
+
+func (tty *devTty) Write(b []byte) (int, error) {
+	return tty.f.Write(b)
+}
+
+func (tty *devTty) Close() error {
+	return tty.f.Close()
+}
+
+func (tty *devTty) Start() error {
+	tty.l.Lock()
+	defer tty.l.Unlock()
+
+	// We open another copy of /dev/tty.  This is a workaround for unusual behavior
+	// observed in macOS, apparently caused when a subshell (for example) closes our
+	// own tty device (when it exits for example).  Getting a fresh new one seems to
+	// resolve the problem.  (We believe this is a bug in the macOS tty driver that
+	// fails to account for dup() references to the same file before applying close()
+	// related behaviors to the tty.)  We're also holding the original copy we opened
+	// since closing that might have deleterious effects as well.  The upshot is that
+	// we will have up to two separate file handles open on /dev/tty.  (Note that when
+	// using stdin/stdout instead of /dev/tty this problem is not observed.)
+	var err error
+	if tty.f, err = os.OpenFile(tty.dev, os.O_RDWR, 0); err != nil {
+		return err
+	}
+	tty.fd = int(tty.of.Fd())
+
+	if !term.IsTerminal(tty.fd) {
+		return errors.New("device is not a terminal")
+	}
+
+	_ = tty.f.SetReadDeadline(time.Time{})
+	saved, err := term.MakeRaw(tty.fd) // also sets vMin and vTime
+	if err != nil {
+		return err
+	}
+	tty.saved = saved
+
+	tty.stopQ = make(chan struct{})
+	tty.wg.Add(1)
+	go func(stopQ chan struct{}) {
+		defer tty.wg.Done()
+		for {
+			select {
+			case <-tty.sig:
+				tty.l.Lock()
+				cb := tty.cb
+				tty.l.Unlock()
+				if cb != nil {
+					cb()
+				}
+			case <-stopQ:
+				return
+			}
+		}
+	}(tty.stopQ)
+
+	signal.Notify(tty.sig, syscall.SIGWINCH)
+	return nil
+}
+
+func (tty *devTty) Drain() error {
+	_ = tty.f.SetReadDeadline(time.Now())
+	if err := tcSetBufParams(tty.fd, 0, 0); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (tty *devTty) Stop() error {
+	tty.l.Lock()
+	if err := term.Restore(tty.fd, tty.saved); err != nil {
+		tty.l.Unlock()
+		return err
+	}
+	_ = tty.f.SetReadDeadline(time.Now())
+
+	signal.Stop(tty.sig)
+	close(tty.stopQ)
+	tty.l.Unlock()
+
+	tty.wg.Wait()
+
+	// close our tty device -- we'll get another one if we Start again later.
+	_ = tty.f.Close()
+
+	return nil
+}
+
+func (tty *devTty) WindowSize() (int, int, error) {
+	w, h, err := term.GetSize(tty.fd)
+	if err != nil {
+		return 0, 0, err
+	}
+	if w == 0 {
+		w, _ = strconv.Atoi(os.Getenv("COLUMNS"))
+	}
+	if w == 0 {
+		w = 80 // default
+	}
+	if h == 0 {
+		h, _ = strconv.Atoi(os.Getenv("LINES"))
+	}
+	if h == 0 {
+		h = 25 // default
+	}
+	return w, h, nil
+}
+
+func (tty *devTty) NotifyResize(cb func()) {
+	tty.l.Lock()
+	tty.cb = cb
+	tty.l.Unlock()
+}
+
+// NewDevTty opens a /dev/tty based Tty.
+func NewDevTty() (Tty, error) {
+	return NewDevTtyFromDev("/dev/tty")
+}
+
+// NewDevTtyFromDev opens a tty device given a path.  This can be useful to bind to other nodes.
+func NewDevTtyFromDev(dev string) (Tty, error) {
+	tty := &devTty{
+		dev: dev,
+		sig: make(chan os.Signal),
+	}
+	var err error
+	if tty.of, err = os.OpenFile(dev, os.O_RDWR, 0); err != nil {
+		return nil, err
+	}
+	tty.fd = int(tty.of.Fd())
+	if !term.IsTerminal(tty.fd) {
+		_ = tty.f.Close()
+		return nil, errors.New("not a terminal")
+	}
+	if tty.saved, err = term.GetState(tty.fd); err != nil {
+		_ = tty.f.Close()
+		return nil, fmt.Errorf("failed to get state: %w", err)
+	}
+	return tty, nil
+}
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/.gitignore b/vendor/github.com/lucasb-eyer/go-colorful/.gitignore
new file mode 100644
index 0000000..47fda8e
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/.gitignore
@@ -0,0 +1,28 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Vim swap files
+.*.sw?
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+# Code coverage stuff
+coverage.out
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/.travis.yml b/vendor/github.com/lucasb-eyer/go-colorful/.travis.yml
new file mode 100644
index 0000000..5bb2a82
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/.travis.yml
@@ -0,0 +1,7 @@
+language: go
+install:
+  - go get golang.org/x/tools/cmd/cover
+  - go get github.com/mattn/goveralls
+script:
+  - go test -v -covermode=count -coverprofile=coverage.out
+  - if [[ "$TRAVIS_PULL_REQUEST" = "false" ]]; then $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci -repotoken $COVERALLS_TOKEN; fi
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/LICENSE b/vendor/github.com/lucasb-eyer/go-colorful/LICENSE
new file mode 100644
index 0000000..4e402a0
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/LICENSE
@@ -0,0 +1,7 @@
+Copyright (c) 2013 Lucas Beyer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/README.md b/vendor/github.com/lucasb-eyer/go-colorful/README.md
new file mode 100644
index 0000000..2cb0c42
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/README.md
@@ -0,0 +1,492 @@
+go-colorful
+===========
+A library for playing with colors in go (golang).
+
+[![Build Status](https://travis-ci.org/lucasb-eyer/go-colorful.svg?branch=master)](https://travis-ci.org/lucasb-eyer/go-colorful)
+[![Coverage Status](https://coveralls.io/repos/github/lucasb-eyer/go-colorful/badge.svg?branch=master)](https://coveralls.io/github/lucasb-eyer/go-colorful?branch=master)
+
+Why?
+====
+I love games. I make games. I love detail and I get lost in detail.
+One such detail popped up during the development of [Memory Which Does Not Suck](https://github.com/lucasb-eyer/mwdns/),
+when we wanted the server to assign the players random colors. Sometimes
+two players got very similar colors, which bugged me. The very same evening,
+[I want hue](http://tools.medialab.sciences-po.fr/iwanthue/) was the top post
+on HackerNews' frontpage and showed me how to Do It Right™. Last but not
+least, there was no library for handling color spaces available in go. Colorful
+does just that and implements Go's `color.Color` interface.
+
+What?
+=====
+Go-Colorful stores colors in RGB and provides methods from converting these to various color-spaces. Currently supported colorspaces are:
+
+- **RGB:** All three of Red, Green and Blue in [0..1].
+- **HSL:** Hue in [0..360], Saturation and Luminance in [0..1]. For legacy reasons; please forget that it exists.
+- **HSV:** Hue in [0..360], Saturation and Value in [0..1]. You're better off using HCL, see below.
+- **Hex RGB:** The "internet" color format, as in #FF00FF.
+- **Linear RGB:** See [gamma correct rendering](http://www.sjbrown.co.uk/2004/05/14/gamma-correct-rendering/).
+- **CIE-XYZ:** CIE's standard color space, almost in [0..1].
+- **CIE-xyY:** encodes chromacity in x and y and luminance in Y, all in [0..1]
+- **CIE-L\*a\*b\*:** A *perceptually uniform* color space, i.e. distances are meaningful. L\* in [0..1] and a\*, b\* almost in [-1..1].
+- **CIE-L\*u\*v\*:** Very similar to CIE-L\*a\*b\*, there is [no consensus](http://en.wikipedia.org/wiki/CIELUV#Historical_background) on which one is "better".
+- **CIE-L\*C\*h° (HCL):** This is generally the [most useful](http://vis4.net/blog/posts/avoid-equidistant-hsv-colors/) one; CIE-L\*a\*b\* space in polar coordinates, i.e. a *better* HSV. H° is in [0..360], C\* almost in [-1..1] and L\* as in CIE-L\*a\*b\*.
+
+For the colorspaces where it makes sense (XYZ, Lab, Luv, HCl), the
+[D65](http://en.wikipedia.org/wiki/Illuminant_D65) is used as reference white
+by default but methods for using your own reference white are provided.
+
+A coordinate being *almost in* a range means that generally it is, but for very
+bright colors and depending on the reference white, it might overflow this
+range slightly. For example, C\* of #0000ff is 1.338.
+
+Unit-tests are provided.
+
+Nice, but what's it useful for?
+-------------------------------
+
+- Converting color spaces. Some people like to do that.
+- Blending (interpolating) between colors in a "natural" look by using the right colorspace.
+- Generating random colors under some constraints (e.g. colors of the same shade, or shades of one color.)
+- Generating gorgeous random palettes with distinct colors of a same temperature.
+
+What not (yet)?
+===============
+There are a few features which are currently missing and might be useful.
+I just haven't implemented them yet because I didn't have the need for it.
+Pull requests welcome.
+
+- Sorting colors (potentially using above mentioned distances)
+
+So which colorspace should I use?
+=================================
+It depends on what you want to do. I think the folks from *I want hue* are
+on-spot when they say that RGB fits to how *screens produce* color, CIE L\*a\*b\*
+fits how *humans perceive* color and HCL fits how *humans think* colors.
+
+Whenever you'd use HSV, rather go for CIE-L\*C\*h°. for fixed lightness L\* and
+chroma C\* values, the hue angle h° rotates through colors of the same
+perceived brightness and intensity.
+
+How?
+====
+
+### Installing
+Installing the library is as easy as
+
+```bash
+$ go get github.com/lucasb-eyer/go-colorful
+```
+
+The package can then be used through an
+
+```go
+import "github.com/lucasb-eyer/go-colorful"
+```
+
+### Basic usage
+
+Create a beautiful blue color using different source space:
+
+```go
+// Any of the following should be the same
+c := colorful.Color{0.313725, 0.478431, 0.721569}
+c, err := colorful.Hex("#517AB8")
+if err != nil {
+    log.Fatal(err)
+}
+c = colorful.Hsv(216.0, 0.56, 0.722)
+c = colorful.Xyz(0.189165, 0.190837, 0.480248)
+c = colorful.Xyy(0.219895, 0.221839, 0.190837)
+c = colorful.Lab(0.507850, 0.040585,-0.370945)
+c = colorful.Luv(0.507849,-0.194172,-0.567924)
+c = colorful.Hcl(276.2440, 0.373160, 0.507849)
+fmt.Printf("RGB values: %v, %v, %v", c.R, c.G, c.B)
+```
+
+And then converting this color back into various color spaces:
+
+```go
+hex := c.Hex()
+h, s, v := c.Hsv()
+x, y, z := c.Xyz()
+x, y, Y := c.Xyy()
+l, a, b := c.Lab()
+l, u, v := c.Luv()
+h, c, l := c.Hcl()
+```
+
+Note that, because of Go's unfortunate choice of requiring an initial uppercase,
+the name of the functions relating to the xyY space are just off. If you have
+any good suggestion, please open an issue. (I don't consider XyY good.)
+
+### The `color.Color` interface
+Because a `colorful.Color` implements Go's `color.Color` interface (found in the
+`image/color` package), it can be used anywhere that expects a `color.Color`.
+
+Furthermore, you can convert anything that implements the `color.Color` interface
+into a `colorful.Color` using the `MakeColor` function:
+
+```go
+c, ok := colorful.MakeColor(color.Gray16{12345})
+```
+
+**Caveat:** Be aware that this latter conversion (using `MakeColor`) hits a
+corner-case when alpha is exactly zero. Because `color.Color` uses pre-multiplied
+alpha colors, this means the RGB values are lost (set to 0) and it's impossible
+to recover them. In such a case `MakeColor` will return `false` as its second value.
+
+### Comparing colors
+In the RGB color space, the Euclidian distance between colors *doesn't* correspond
+to visual/perceptual distance. This means that two pairs of colors which have the
+same distance in RGB space can look much further apart. This is fixed by the
+CIE-L\*a\*b\*, CIE-L\*u\*v\* and CIE-L\*C\*h° color spaces.
+Thus you should only compare colors in any of these space.
+(Note that the distance in CIE-L\*a\*b\* and CIE-L\*C\*h° are the same, since it's the same space but in cylindrical coordinates)
+
+![Color distance comparison](doc/colordist/colordist.png)
+
+The two colors shown on the top look much more different than the two shown on
+the bottom. Still, in RGB space, their distance is the same.
+Here is a little example program which shows the distances between the top two
+and bottom two colors in RGB, CIE-L\*a\*b\* and CIE-L\*u\*v\* space. You can find it in `doc/colordist/colordist.go`.
+
+```go
+package main
+
+import "fmt"
+import "github.com/lucasb-eyer/go-colorful"
+
+func main() {
+	c1a := colorful.Color{150.0 / 255.0, 10.0 / 255.0, 150.0 / 255.0}
+	c1b := colorful.Color{53.0 / 255.0, 10.0 / 255.0, 150.0 / 255.0}
+	c2a := colorful.Color{10.0 / 255.0, 150.0 / 255.0, 50.0 / 255.0}
+	c2b := colorful.Color{99.9 / 255.0, 150.0 / 255.0, 10.0 / 255.0}
+
+	fmt.Printf("DistanceRgb:       c1: %v\tand c2: %v\n", c1a.DistanceRgb(c1b), c2a.DistanceRgb(c2b))
+	fmt.Printf("DistanceLab:       c1: %v\tand c2: %v\n", c1a.DistanceLab(c1b), c2a.DistanceLab(c2b))
+	fmt.Printf("DistanceLuv:       c1: %v\tand c2: %v\n", c1a.DistanceLuv(c1b), c2a.DistanceLuv(c2b))
+	fmt.Printf("DistanceCIE76:     c1: %v\tand c2: %v\n", c1a.DistanceCIE76(c1b), c2a.DistanceCIE76(c2b))
+	fmt.Printf("DistanceCIE94:     c1: %v\tand c2: %v\n", c1a.DistanceCIE94(c1b), c2a.DistanceCIE94(c2b))
+	fmt.Printf("DistanceCIEDE2000: c1: %v\tand c2: %v\n", c1a.DistanceCIEDE2000(c1b), c2a.DistanceCIEDE2000(c2b))
+}
+```
+
+Running the above program shows that you should always prefer any of the CIE distances:
+
+```bash
+$ go run colordist.go
+DistanceRgb:       c1: 0.3803921568627451	and c2: 0.3858713931171159
+DistanceLab:       c1: 0.32048458312798056	and c2: 0.24397151758565272
+DistanceLuv:       c1: 0.5134369614199698	and c2: 0.2568692839860636
+DistanceCIE76:     c1: 0.32048458312798056	and c2: 0.24397151758565272
+DistanceCIE94:     c1: 0.19799168128511324	and c2: 0.12207136371167401
+DistanceCIEDE2000: c1: 0.17274551120971166	and c2: 0.10665210031428465
+```
+
+It also shows that `DistanceLab` is more formally known as `DistanceCIE76` and
+has been superseded by the slightly more accurate, but much more expensive
+`DistanceCIE94` and `DistanceCIEDE2000`.
+
+Note that `AlmostEqualRgb` is provided mainly for (unit-)testing purposes. Use
+it only if you really know what you're doing. It will eat your cat.
+
+### Blending colors
+Blending is highly connected to distance, since it basically "walks through" the
+colorspace thus, if the colorspace maps distances well, the walk is "smooth".
+
+Colorful comes with blending functions in RGB, HSV and any of the LAB spaces.
+Of course, you'd rather want to use the blending functions of the LAB spaces since
+these spaces map distances well but, just in case, here is an example showing
+you how the blendings (`#fdffcc` to `#242a42`) are done in the various spaces:
+
+![Blending colors in different spaces.](doc/colorblend/colorblend.png)
+
+What you see is that HSV is really bad: it adds some green, which is not present
+in the original colors at all! RGB is much better, but it stays light a little
+too long. LUV and LAB both hit the right lightness but LAB has a little more
+color. HCL works in the same vein as HSV (both cylindrical interpolations) but
+it does it right in that there is no green appearing and the lighthness changes
+in a linear manner.
+
+While this seems all good, you need to know one thing: When interpolating in any
+of the CIE color spaces, you might get invalid RGB colors! This is important if
+the starting and ending colors are user-input or random. An example of where this
+happens is when blending between `#eeef61` and `#1e3140`:
+
+![Invalid RGB colors may crop up when blending in CIE spaces.](doc/colorblend/invalid.png)
+
+You can test whether a color is a valid RGB color by calling the `IsValid` method
+and indeed, calling IsValid will return false for the redish colors on the bottom.
+One way to "fix" this is to get a valid color close to the invalid one by calling
+`Clamped`, which always returns a nearby valid color. Doing this, we get the
+following result, which is satisfactory:
+
+![Fixing invalid RGB colors by clamping them to the valid range.](doc/colorblend/clamped.png)
+
+The following is the code creating the above three images; it can be found in `doc/colorblend/colorblend.go`
+
+```go
+package main
+
+import "fmt"
+import "github.com/lucasb-eyer/go-colorful"
+import "image"
+import "image/draw"
+import "image/png"
+import "os"
+
+func main() {
+    blocks := 10
+    blockw := 40
+    img := image.NewRGBA(image.Rect(0,0,blocks*blockw,200))
+
+    c1, _ := colorful.Hex("#fdffcc")
+    c2, _ := colorful.Hex("#242a42")
+
+    // Use these colors to get invalid RGB in the gradient.
+    //c1, _ := colorful.Hex("#EEEF61")
+    //c2, _ := colorful.Hex("#1E3140")
+
+    for i := 0 ; i < blocks ; i++ {
+        draw.Draw(img, image.Rect(i*blockw,  0,(i+1)*blockw, 40), &image.Uniform{c1.BlendHsv(c2, float64(i)/float64(blocks-1))}, image.ZP, draw.Src)
+        draw.Draw(img, image.Rect(i*blockw, 40,(i+1)*blockw, 80), &image.Uniform{c1.BlendLuv(c2, float64(i)/float64(blocks-1))}, image.ZP, draw.Src)
+        draw.Draw(img, image.Rect(i*blockw, 80,(i+1)*blockw,120), &image.Uniform{c1.BlendRgb(c2, float64(i)/float64(blocks-1))}, image.ZP, draw.Src)
+        draw.Draw(img, image.Rect(i*blockw,120,(i+1)*blockw,160), &image.Uniform{c1.BlendLab(c2, float64(i)/float64(blocks-1))}, image.ZP, draw.Src)
+        draw.Draw(img, image.Rect(i*blockw,160,(i+1)*blockw,200), &image.Uniform{c1.BlendHcl(c2, float64(i)/float64(blocks-1))}, image.ZP, draw.Src)
+
+        // This can be used to "fix" invalid colors in the gradient.
+        //draw.Draw(img, image.Rect(i*blockw,160,(i+1)*blockw,200), &image.Uniform{c1.BlendHcl(c2, float64(i)/float64(blocks-1)).Clamped()}, image.ZP, draw.Src)
+    }
+
+    toimg, err := os.Create("colorblend.png")
+    if err != nil {
+        fmt.Printf("Error: %v", err)
+        return
+    }
+    defer toimg.Close()
+
+    png.Encode(toimg, img)
+}
+```
+
+#### Generating color gradients
+A very common reason to blend colors is creating gradients. There is an example
+program in [doc/gradientgen.go](doc/gradientgen/gradientgen.go); it doesn't use any API
+which hasn't been used in the previous example code, so I won't bother pasting
+the code in here. Just look at that gorgeous gradient it generated in HCL space:
+
+!["Spectral" colorbrewer gradient in HCL space.](doc/gradientgen/gradientgen.png)
+
+### Getting random colors
+It is sometimes necessary to generate random colors. You could simply do this
+on your own by generating colors with random values. By restricting the random
+values to a range smaller than [0..1] and using a space such as CIE-H\*C\*l° or
+HSV, you can generate both random shades of a color or random colors of a
+lightness:
+
+```go
+random_blue := colorful.Hcl(180.0+rand.Float64()*50.0, 0.2+rand.Float64()*0.8, 0.3+rand.Float64()*0.7)
+random_dark := colorful.Hcl(rand.Float64()*360.0, rand.Float64(), rand.Float64()*0.4)
+random_light := colorful.Hcl(rand.Float64()*360.0, rand.Float64(), 0.6+rand.Float64()*0.4)
+```
+
+Since getting random "warm" and "happy" colors is quite a common task, there
+are some helper functions:
+
+```go
+colorful.WarmColor()
+colorful.HappyColor()
+colorful.FastWarmColor()
+colorful.FastHappyColor()
+```
+
+The ones prefixed by `Fast` are faster but less coherent since they use the HSV
+space as opposed to the regular ones which use CIE-L\*C\*h° space. The
+following picture shows the warm colors in the top two rows and happy colors
+in the bottom two rows. Within these, the first is the regular one and the
+second is the fast one.
+
+![Warm, fast warm, happy and fast happy random colors, respectively.](doc/colorgens/colorgens.png)
+
+Don't forget to initialize the random seed! You can see the code used for
+generating this picture in `doc/colorgens/colorgens.go`.
+
+### Getting random palettes
+As soon as you need to generate more than one random color, you probably want
+them to be distinguishible. Playing against an opponent which has almost the
+same blue as I do is not fun. This is where random palettes can help.
+
+These palettes are generated using an algorithm which ensures that all colors
+on the palette are as distinguishible as possible. Again, there is a `Fast`
+method which works in HSV and is less perceptually uniform and a non-`Fast`
+method which works in CIE spaces. For more theory on `SoftPalette`, check out
+[I want hue](http://tools.medialab.sciences-po.fr/iwanthue/theory.php). Yet
+again, there is a `Happy` and a `Warm` version, which do what you expect, but
+now there is an additional `Soft` version, which is more configurable: you can
+give a constraint on the color space in order to get colors within a certain *feel*.
+
+Let's start with the simple methods first, all they take is the amount of
+colors to generate, which could, for example, be the player count. They return
+an array of `colorful.Color` objects:
+
+```go
+pal1, err1 := colorful.WarmPalette(10)
+pal2 := colorful.FastWarmPalette(10)
+pal3, err3 := colorful.HappyPalette(10)
+pal4 := colorful.FastHappyPalette(10)
+pal5, err5 := colorful.SoftPalette(10)
+```
+
+Note that the non-fast methods *may* fail if you ask for way too many colors.
+Let's move on to the advanced one, namely `SoftPaletteEx`. Besides the color
+count, this function takes a `SoftPaletteSettings` object as argument. The
+interesting part here is its `CheckColor` member, which is a boolean function
+taking three floating points as arguments: `l`, `a` and `b`. This function
+should return `true` for colors which lie within the region you want and `false`
+otherwise. The other members are `Iteration`, which should be within [5..100]
+where higher means slower but more exact palette, and `ManySamples` which you
+should set to `true` in case your `CheckColor` constraint rejects a large part
+of the color space.
+
+For example, to create a palette of 10 brownish colors, you'd call it like this:
+
+```go
+func isbrowny(l, a, b float64) bool {
+    h, c, L := colorful.LabToHcl(l, a, b)
+    return 10.0 < h && h < 50.0 && 0.1 < c && c < 0.5 && L < 0.5
+}
+// Since the above function is pretty restrictive, we set ManySamples to true.
+brownies := colorful.SoftPaletteEx(10, colorful.SoftPaletteSettings{isbrowny, 50, true})
+```
+
+The following picture shows the palettes generated by all of these methods
+(sourcecode in `doc/palettegens/palettegens.go`), in the order they were presented, i.e.
+from top to bottom: `Warm`, `FastWarm`, `Happy`, `FastHappy`, `Soft`,
+`SoftEx(isbrowny)`. All of them contain some randomness, so YMMV.
+
+![All example palettes](doc/palettegens/palettegens.png)
+
+Again, the code used for generating the above image is available as [doc/palettegens/palettegens.go](https://github.com/lucasb-eyer/go-colorful/blob/master/doc/palettegens/palettegens.go).
+
+### Sorting colors
+TODO: Sort using dist fn.
+
+### Using linear RGB for computations
+There are two methods for transforming RGB<->Linear RGB: a fast and almost precise one,
+and a slow and precise one.
+
+```go
+r, g, b := colorful.Hex("#FF0000").FastLinearRgb()
+```
+
+TODO: describe some more.
+
+### Want to use some other reference point?
+
+```go
+c := colorful.LabWhiteRef(0.507850, 0.040585,-0.370945, colorful.D50)
+l, a, b := c.LabWhiteRef(colorful.D50)
+```
+
+### Reading and writing colors from databases
+
+The type `HexColor` makes it easy to store colors as strings in a database. It
+implements the [https://godoc.org/database/sql#Scanner](database/sql.Scanner)
+and [database/sql/driver.Value](https://godoc.org/database/sql/driver.Value)
+interfaces which provide automatic type conversion.
+
+Example:
+
+```go
+var hc HexColor
+_, err := db.QueryRow("SELECT '#ff0000';").Scan(&hc)
+// hc == HexColor{R: 1, G: 0, B: 0}; err == nil
+```
+
+FAQ
+===
+
+### Q: I get all f!@#ed up values! Your library sucks!
+A: You probably provided values in the wrong range. For example, RGB values are
+expected to reside between 0 and 1, *not* between 0 and 255. Normalize your colors.
+
+### Q: Lab/Luv/HCl seem broken! Your library sucks!
+They look like this:
+
+<img height="150" src="https://user-images.githubusercontent.com/3779568/28646900-6548040c-7264-11e7-8f12-81097a97c260.png">
+
+A: You're likely trying to generate and display colors that can't be represented by RGB,
+and thus monitors. When you're trying to convert, say, `HCL(190.0, 1.0, 1.0).RGB255()`,
+you're asking for RGB values of `(-2105.254  300.680  286.185)`, which clearly don't exist,
+and the `RGB255` function just casts these numbers to `uint8`, creating wrap-around and
+what looks like a completely broken gradient. What you want to do, is either use more
+reasonable values of colors which actually exist in RGB, or just `Clamp()` the resulting
+color to its nearest existing one, living with the consequences:
+`HCL(190.0, 1.0, 1.0).Clamp().RGB255()`. It will look something like this:
+
+<img height="150" src="https://user-images.githubusercontent.com/1476029/29596343-9a8c62c6-8771-11e7-9026-b8eb8852cc4a.png">
+
+[Here's an issue going in-depth about this](https://github.com/lucasb-eyer/go-colorful/issues/14),
+as well as [my answer](https://github.com/lucasb-eyer/go-colorful/issues/14#issuecomment-324205385),
+both with code and pretty pictures. Also note that this was somewhat covered above in the
+["Blending colors" section](https://github.com/lucasb-eyer/go-colorful#blending-colors).
+
+### Q: In a tight loop, conversion to Lab/Luv/HCl/... are slooooow!
+A: Yes, they are.
+This library aims for correctness, readability, and modularity; it wasn't written with speed in mind.
+A large part of the slowness comes from these conversions going through `LinearRgb` which uses powers.
+I implemented a fast approximation to `LinearRgb` called `FastLinearRgb` by using Taylor approximations.
+The approximation is roughly 5x faster and precise up to roughly 0.5%,
+the major caveat being that if the input values are outside the range 0-1, accuracy drops dramatically.
+You can use these in your conversions as follows:
+
+```go
+col := // Get your color somehow
+l, a, b := XyzToLab(LinearRgbToXyz(col.LinearRgb()))
+```
+
+If you need faster versions of `Distance*` and `Blend*` that make use of this fast approximation,
+feel free to implement them and open a pull-request, I'll happily accept.
+
+The derivation of these functions can be followed in [this Jupyter notebook](doc/LinearRGB Approximations.ipynb).
+Here's the main figure showing the approximation quality:
+
+![approximation quality](doc/approx-quality.png)
+
+More speed could be gained by using SIMD instructions in many places.
+You can also get more speed for specific conversions by approximating the full conversion function,
+but that is outside the scope of this library.
+Thanks to [@ZirconiumX](https://github.com/ZirconiumX) for starting this investigation,
+see [issue #18](https://github.com/lucasb-eyer/go-colorful/issues/18) for details.
+
+### Q: Why would `MakeColor` ever fail!?
+A: `MakeColor` fails when the alpha channel is zero. In that case, the
+conversion is undefined. See [issue 21](https://github.com/lucasb-eyer/go-colorful/issues/21)
+as well as the short caveat note in the ["The `color.Color` interface"](README.md#the-colorcolor-interface)
+section above.
+
+Who?
+====
+
+This library has been developed by Lucas Beyer with contributions from
+Bastien Dejean (@baskerville), Phil Kulak (@pkulak) and Christian Muehlhaeuser (@muesli).
+
+Release Notes
+=============
+
+### Version 1.0
+- API Breaking change in `MakeColor`: instead of `panic`ing when alpha is zero, it now returns a secondary, boolean return value indicating success. See [the color.Color interface](https://github.com/lucasb-eyer/go-colorful#the-colorcolor-interface) section and [this FAQ entry](https://github.com/lucasb-eyer/go-colorful#q-why-would-makecolor-ever-fail) for details.
+
+### Version 0.9
+- Initial version number after having ignored versioning for a long time :)
+
+License: MIT
+============
+Copyright (c) 2013 Lucas Beyer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/colorgens.go b/vendor/github.com/lucasb-eyer/go-colorful/colorgens.go
new file mode 100644
index 0000000..2e2e49e
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/colorgens.go
@@ -0,0 +1,55 @@
+// Various ways to generate single random colors
+
+package colorful
+
+import (
+	"math/rand"
+)
+
+// Creates a random dark, "warm" color through a restricted HSV space.
+func FastWarmColor() Color {
+	return Hsv(
+		rand.Float64()*360.0,
+		0.5+rand.Float64()*0.3,
+		0.3+rand.Float64()*0.3)
+}
+
+// Creates a random dark, "warm" color through restricted HCL space.
+// This is slower than FastWarmColor but will likely give you colors which have
+// the same "warmness" if you run it many times.
+func WarmColor() (c Color) {
+	for c = randomWarm(); !c.IsValid(); c = randomWarm() {
+	}
+	return
+}
+
+func randomWarm() Color {
+	return Hcl(
+		rand.Float64()*360.0,
+		0.1+rand.Float64()*0.3,
+		0.2+rand.Float64()*0.3)
+}
+
+// Creates a random bright, "pimpy" color through a restricted HSV space.
+func FastHappyColor() Color {
+	return Hsv(
+		rand.Float64()*360.0,
+		0.7+rand.Float64()*0.3,
+		0.6+rand.Float64()*0.3)
+}
+
+// Creates a random bright, "pimpy" color through restricted HCL space.
+// This is slower than FastHappyColor but will likely give you colors which
+// have the same "brightness" if you run it many times.
+func HappyColor() (c Color) {
+	for c = randomPimp(); !c.IsValid(); c = randomPimp() {
+	}
+	return
+}
+
+func randomPimp() Color {
+	return Hcl(
+		rand.Float64()*360.0,
+		0.5+rand.Float64()*0.3,
+		0.5+rand.Float64()*0.3)
+}
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/colors.go b/vendor/github.com/lucasb-eyer/go-colorful/colors.go
new file mode 100644
index 0000000..29870df
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/colors.go
@@ -0,0 +1,903 @@
+// The colorful package provides all kinds of functions for working with colors.
+package colorful
+
+import (
+	"fmt"
+	"image/color"
+	"math"
+)
+
+// A color is stored internally using sRGB (standard RGB) values in the range 0-1
+type Color struct {
+	R, G, B float64
+}
+
+// Implement the Go color.Color interface.
+func (col Color) RGBA() (r, g, b, a uint32) {
+	r = uint32(col.R*65535.0 + 0.5)
+	g = uint32(col.G*65535.0 + 0.5)
+	b = uint32(col.B*65535.0 + 0.5)
+	a = 0xFFFF
+	return
+}
+
+// Constructs a colorful.Color from something implementing color.Color
+func MakeColor(col color.Color) (Color, bool) {
+	r, g, b, a := col.RGBA()
+	if a == 0 {
+		return Color{0, 0, 0}, false
+	}
+
+	// Since color.Color is alpha pre-multiplied, we need to divide the
+	// RGB values by alpha again in order to get back the original RGB.
+	r *= 0xffff
+	r /= a
+	g *= 0xffff
+	g /= a
+	b *= 0xffff
+	b /= a
+
+	return Color{float64(r) / 65535.0, float64(g) / 65535.0, float64(b) / 65535.0}, true
+}
+
+// Might come in handy sometimes to reduce boilerplate code.
+func (col Color) RGB255() (r, g, b uint8) {
+	r = uint8(col.R*255.0 + 0.5)
+	g = uint8(col.G*255.0 + 0.5)
+	b = uint8(col.B*255.0 + 0.5)
+	return
+}
+
+// This is the tolerance used when comparing colors using AlmostEqualRgb.
+const Delta = 1.0 / 255.0
+
+// This is the default reference white point.
+var D65 = [3]float64{0.95047, 1.00000, 1.08883}
+
+// And another one.
+var D50 = [3]float64{0.96422, 1.00000, 0.82521}
+
+// Checks whether the color exists in RGB space, i.e. all values are in [0..1]
+func (c Color) IsValid() bool {
+	return 0.0 <= c.R && c.R <= 1.0 &&
+		0.0 <= c.G && c.G <= 1.0 &&
+		0.0 <= c.B && c.B <= 1.0
+}
+
+func clamp01(v float64) float64 {
+	return math.Max(0.0, math.Min(v, 1.0))
+}
+
+// Returns Clamps the color into valid range, clamping each value to [0..1]
+// If the color is valid already, this is a no-op.
+func (c Color) Clamped() Color {
+	return Color{clamp01(c.R), clamp01(c.G), clamp01(c.B)}
+}
+
+func sq(v float64) float64 {
+	return v * v
+}
+
+func cub(v float64) float64 {
+	return v * v * v
+}
+
+// DistanceRgb computes the distance between two colors in RGB space.
+// This is not a good measure! Rather do it in Lab space.
+func (c1 Color) DistanceRgb(c2 Color) float64 {
+	return math.Sqrt(sq(c1.R-c2.R) + sq(c1.G-c2.G) + sq(c1.B-c2.B))
+}
+
+// Check for equality between colors within the tolerance Delta (1/255).
+func (c1 Color) AlmostEqualRgb(c2 Color) bool {
+	return math.Abs(c1.R-c2.R)+
+		math.Abs(c1.G-c2.G)+
+		math.Abs(c1.B-c2.B) < 3.0*Delta
+}
+
+// You don't really want to use this, do you? Go for BlendLab, BlendLuv or BlendHcl.
+func (c1 Color) BlendRgb(c2 Color, t float64) Color {
+	return Color{c1.R + t*(c2.R-c1.R),
+		c1.G + t*(c2.G-c1.G),
+		c1.B + t*(c2.B-c1.B)}
+}
+
+// Utility used by Hxx color-spaces for interpolating between two angles in [0,360].
+func interp_angle(a0, a1, t float64) float64 {
+	// Based on the answer here: http://stackoverflow.com/a/14498790/2366315
+	// With potential proof that it works here: http://math.stackexchange.com/a/2144499
+	delta := math.Mod(math.Mod(a1-a0, 360.0)+540, 360.0) - 180.0
+	return math.Mod(a0+t*delta+360.0, 360.0)
+}
+
+/// HSV ///
+///////////
+// From http://en.wikipedia.org/wiki/HSL_and_HSV
+// Note that h is in [0..360] and s,v in [0..1]
+
+// Hsv returns the Hue [0..360], Saturation and Value [0..1] of the color.
+func (col Color) Hsv() (h, s, v float64) {
+	min := math.Min(math.Min(col.R, col.G), col.B)
+	v = math.Max(math.Max(col.R, col.G), col.B)
+	C := v - min
+
+	s = 0.0
+	if v != 0.0 {
+		s = C / v
+	}
+
+	h = 0.0 // We use 0 instead of undefined as in wp.
+	if min != v {
+		if v == col.R {
+			h = math.Mod((col.G-col.B)/C, 6.0)
+		}
+		if v == col.G {
+			h = (col.B-col.R)/C + 2.0
+		}
+		if v == col.B {
+			h = (col.R-col.G)/C + 4.0
+		}
+		h *= 60.0
+		if h < 0.0 {
+			h += 360.0
+		}
+	}
+	return
+}
+
+// Hsv creates a new Color given a Hue in [0..360], a Saturation and a Value in [0..1]
+func Hsv(H, S, V float64) Color {
+	Hp := H / 60.0
+	C := V * S
+	X := C * (1.0 - math.Abs(math.Mod(Hp, 2.0)-1.0))
+
+	m := V - C
+	r, g, b := 0.0, 0.0, 0.0
+
+	switch {
+	case 0.0 <= Hp && Hp < 1.0:
+		r = C
+		g = X
+	case 1.0 <= Hp && Hp < 2.0:
+		r = X
+		g = C
+	case 2.0 <= Hp && Hp < 3.0:
+		g = C
+		b = X
+	case 3.0 <= Hp && Hp < 4.0:
+		g = X
+		b = C
+	case 4.0 <= Hp && Hp < 5.0:
+		r = X
+		b = C
+	case 5.0 <= Hp && Hp < 6.0:
+		r = C
+		b = X
+	}
+
+	return Color{m + r, m + g, m + b}
+}
+
+// You don't really want to use this, do you? Go for BlendLab, BlendLuv or BlendHcl.
+func (c1 Color) BlendHsv(c2 Color, t float64) Color {
+	h1, s1, v1 := c1.Hsv()
+	h2, s2, v2 := c2.Hsv()
+
+	// We know that h are both in [0..360]
+	return Hsv(interp_angle(h1, h2, t), s1+t*(s2-s1), v1+t*(v2-v1))
+}
+
+/// HSL ///
+///////////
+
+// Hsl returns the Hue [0..360], Saturation [0..1], and Luminance (lightness) [0..1] of the color.
+func (col Color) Hsl() (h, s, l float64) {
+	min := math.Min(math.Min(col.R, col.G), col.B)
+	max := math.Max(math.Max(col.R, col.G), col.B)
+
+	l = (max + min) / 2
+
+	if min == max {
+		s = 0
+		h = 0
+	} else {
+		if l < 0.5 {
+			s = (max - min) / (max + min)
+		} else {
+			s = (max - min) / (2.0 - max - min)
+		}
+
+		if max == col.R {
+			h = (col.G - col.B) / (max - min)
+		} else if max == col.G {
+			h = 2.0 + (col.B-col.R)/(max-min)
+		} else {
+			h = 4.0 + (col.R-col.G)/(max-min)
+		}
+
+		h *= 60
+
+		if h < 0 {
+			h += 360
+		}
+	}
+
+	return
+}
+
+// Hsl creates a new Color given a Hue in [0..360], a Saturation [0..1], and a Luminance (lightness) in [0..1]
+func Hsl(h, s, l float64) Color {
+	if s == 0 {
+		return Color{l, l, l}
+	}
+
+	var r, g, b float64
+	var t1 float64
+	var t2 float64
+	var tr float64
+	var tg float64
+	var tb float64
+
+	if l < 0.5 {
+		t1 = l * (1.0 + s)
+	} else {
+		t1 = l + s - l*s
+	}
+
+	t2 = 2*l - t1
+	h /= 360
+	tr = h + 1.0/3.0
+	tg = h
+	tb = h - 1.0/3.0
+
+	if tr < 0 {
+		tr++
+	}
+	if tr > 1 {
+		tr--
+	}
+	if tg < 0 {
+		tg++
+	}
+	if tg > 1 {
+		tg--
+	}
+	if tb < 0 {
+		tb++
+	}
+	if tb > 1 {
+		tb--
+	}
+
+	// Red
+	if 6*tr < 1 {
+		r = t2 + (t1-t2)*6*tr
+	} else if 2*tr < 1 {
+		r = t1
+	} else if 3*tr < 2 {
+		r = t2 + (t1-t2)*(2.0/3.0-tr)*6
+	} else {
+		r = t2
+	}
+
+	// Green
+	if 6*tg < 1 {
+		g = t2 + (t1-t2)*6*tg
+	} else if 2*tg < 1 {
+		g = t1
+	} else if 3*tg < 2 {
+		g = t2 + (t1-t2)*(2.0/3.0-tg)*6
+	} else {
+		g = t2
+	}
+
+	// Blue
+	if 6*tb < 1 {
+		b = t2 + (t1-t2)*6*tb
+	} else if 2*tb < 1 {
+		b = t1
+	} else if 3*tb < 2 {
+		b = t2 + (t1-t2)*(2.0/3.0-tb)*6
+	} else {
+		b = t2
+	}
+
+	return Color{r, g, b}
+}
+
+/// Hex ///
+///////////
+
+// Hex returns the hex "html" representation of the color, as in #ff0080.
+func (col Color) Hex() string {
+	// Add 0.5 for rounding
+	return fmt.Sprintf("#%02x%02x%02x", uint8(col.R*255.0+0.5), uint8(col.G*255.0+0.5), uint8(col.B*255.0+0.5))
+}
+
+// Hex parses a "html" hex color-string, either in the 3 "#f0c" or 6 "#ff1034" digits form.
+func Hex(scol string) (Color, error) {
+	format := "#%02x%02x%02x"
+	factor := 1.0 / 255.0
+	if len(scol) == 4 {
+		format = "#%1x%1x%1x"
+		factor = 1.0 / 15.0
+	}
+
+	var r, g, b uint8
+	n, err := fmt.Sscanf(scol, format, &r, &g, &b)
+	if err != nil {
+		return Color{}, err
+	}
+	if n != 3 {
+		return Color{}, fmt.Errorf("color: %v is not a hex-color", scol)
+	}
+
+	return Color{float64(r) * factor, float64(g) * factor, float64(b) * factor}, nil
+}
+
+/// Linear ///
+//////////////
+// http://www.sjbrown.co.uk/2004/05/14/gamma-correct-rendering/
+// http://www.brucelindbloom.com/Eqn_RGB_to_XYZ.html
+
+func linearize(v float64) float64 {
+	if v <= 0.04045 {
+		return v / 12.92
+	}
+	return math.Pow((v+0.055)/1.055, 2.4)
+}
+
+// LinearRgb converts the color into the linear RGB space (see http://www.sjbrown.co.uk/2004/05/14/gamma-correct-rendering/).
+func (col Color) LinearRgb() (r, g, b float64) {
+	r = linearize(col.R)
+	g = linearize(col.G)
+	b = linearize(col.B)
+	return
+}
+
+// A much faster and still quite precise linearization using a 6th-order Taylor approximation.
+// See the accompanying Jupyter notebook for derivation of the constants.
+func linearize_fast(v float64) float64 {
+	v1 := v - 0.5
+	v2 := v1 * v1
+	v3 := v2 * v1
+	v4 := v2 * v2
+	//v5 := v3*v2
+	return -0.248750514614486 + 0.925583310193438*v + 1.16740237321695*v2 + 0.280457026598666*v3 - 0.0757991963780179*v4 //+ 0.0437040411548932*v5
+}
+
+// FastLinearRgb is much faster than and almost as accurate as LinearRgb.
+// BUT it is important to NOTE that they only produce good results for valid colors r,g,b in [0,1].
+func (col Color) FastLinearRgb() (r, g, b float64) {
+	r = linearize_fast(col.R)
+	g = linearize_fast(col.G)
+	b = linearize_fast(col.B)
+	return
+}
+
+func delinearize(v float64) float64 {
+	if v <= 0.0031308 {
+		return 12.92 * v
+	}
+	return 1.055*math.Pow(v, 1.0/2.4) - 0.055
+}
+
+// LinearRgb creates an sRGB color out of the given linear RGB color (see http://www.sjbrown.co.uk/2004/05/14/gamma-correct-rendering/).
+func LinearRgb(r, g, b float64) Color {
+	return Color{delinearize(r), delinearize(g), delinearize(b)}
+}
+
+func delinearize_fast(v float64) float64 {
+	// This function (fractional root) is much harder to linearize, so we need to split.
+	if v > 0.2 {
+		v1 := v - 0.6
+		v2 := v1 * v1
+		v3 := v2 * v1
+		v4 := v2 * v2
+		v5 := v3 * v2
+		return 0.442430344268235 + 0.592178981271708*v - 0.287864782562636*v2 + 0.253214392068985*v3 - 0.272557158129811*v4 + 0.325554383321718*v5
+	} else if v > 0.03 {
+		v1 := v - 0.115
+		v2 := v1 * v1
+		v3 := v2 * v1
+		v4 := v2 * v2
+		v5 := v3 * v2
+		return 0.194915592891669 + 1.55227076330229*v - 3.93691860257828*v2 + 18.0679839248761*v3 - 101.468750302746*v4 + 632.341487393927*v5
+	} else {
+		v1 := v - 0.015
+		v2 := v1 * v1
+		v3 := v2 * v1
+		v4 := v2 * v2
+		v5 := v3 * v2
+		// You can clearly see from the involved constants that the low-end is highly nonlinear.
+		return 0.0519565234928877 + 5.09316778537561*v - 99.0338180489702*v2 + 3484.52322764895*v3 - 150028.083412663*v4 + 7168008.42971613*v5
+	}
+}
+
+// FastLinearRgb is much faster than and almost as accurate as LinearRgb.
+// BUT it is important to NOTE that they only produce good results for valid inputs r,g,b in [0,1].
+func FastLinearRgb(r, g, b float64) Color {
+	return Color{delinearize_fast(r), delinearize_fast(g), delinearize_fast(b)}
+}
+
+// XyzToLinearRgb converts from CIE XYZ-space to Linear RGB space.
+func XyzToLinearRgb(x, y, z float64) (r, g, b float64) {
+	r = 3.2404542*x - 1.5371385*y - 0.4985314*z
+	g = -0.9692660*x + 1.8760108*y + 0.0415560*z
+	b = 0.0556434*x - 0.2040259*y + 1.0572252*z
+	return
+}
+
+func LinearRgbToXyz(r, g, b float64) (x, y, z float64) {
+	x = 0.4124564*r + 0.3575761*g + 0.1804375*b
+	y = 0.2126729*r + 0.7151522*g + 0.0721750*b
+	z = 0.0193339*r + 0.1191920*g + 0.9503041*b
+	return
+}
+
+/// XYZ ///
+///////////
+// http://www.sjbrown.co.uk/2004/05/14/gamma-correct-rendering/
+
+func (col Color) Xyz() (x, y, z float64) {
+	return LinearRgbToXyz(col.LinearRgb())
+}
+
+func Xyz(x, y, z float64) Color {
+	return LinearRgb(XyzToLinearRgb(x, y, z))
+}
+
+/// xyY ///
+///////////
+// http://www.brucelindbloom.com/Eqn_XYZ_to_xyY.html
+
+// Well, the name is bad, since it's xyY but Golang needs me to start with a
+// capital letter to make the method public.
+func XyzToXyy(X, Y, Z float64) (x, y, Yout float64) {
+	return XyzToXyyWhiteRef(X, Y, Z, D65)
+}
+
+func XyzToXyyWhiteRef(X, Y, Z float64, wref [3]float64) (x, y, Yout float64) {
+	Yout = Y
+	N := X + Y + Z
+	if math.Abs(N) < 1e-14 {
+		// When we have black, Bruce Lindbloom recommends to use
+		// the reference white's chromacity for x and y.
+		x = wref[0] / (wref[0] + wref[1] + wref[2])
+		y = wref[1] / (wref[0] + wref[1] + wref[2])
+	} else {
+		x = X / N
+		y = Y / N
+	}
+	return
+}
+
+func XyyToXyz(x, y, Y float64) (X, Yout, Z float64) {
+	Yout = Y
+
+	if -1e-14 < y && y < 1e-14 {
+		X = 0.0
+		Z = 0.0
+	} else {
+		X = Y / y * x
+		Z = Y / y * (1.0 - x - y)
+	}
+
+	return
+}
+
+// Converts the given color to CIE xyY space using D65 as reference white.
+// (Note that the reference white is only used for black input.)
+// x, y and Y are in [0..1]
+func (col Color) Xyy() (x, y, Y float64) {
+	return XyzToXyy(col.Xyz())
+}
+
+// Converts the given color to CIE xyY space, taking into account
+// a given reference white. (i.e. the monitor's white)
+// (Note that the reference white is only used for black input.)
+// x, y and Y are in [0..1]
+func (col Color) XyyWhiteRef(wref [3]float64) (x, y, Y float64) {
+	X, Y2, Z := col.Xyz()
+	return XyzToXyyWhiteRef(X, Y2, Z, wref)
+}
+
+// Generates a color by using data given in CIE xyY space.
+// x, y and Y are in [0..1]
+func Xyy(x, y, Y float64) Color {
+	return Xyz(XyyToXyz(x, y, Y))
+}
+
+/// L*a*b* ///
+//////////////
+// http://en.wikipedia.org/wiki/Lab_color_space#CIELAB-CIEXYZ_conversions
+// For L*a*b*, we need to L*a*b*<->XYZ->RGB and the first one is device dependent.
+
+func lab_f(t float64) float64 {
+	if t > 6.0/29.0*6.0/29.0*6.0/29.0 {
+		return math.Cbrt(t)
+	}
+	return t/3.0*29.0/6.0*29.0/6.0 + 4.0/29.0
+}
+
+func XyzToLab(x, y, z float64) (l, a, b float64) {
+	// Use D65 white as reference point by default.
+	// http://www.fredmiranda.com/forum/topic/1035332
+	// http://en.wikipedia.org/wiki/Standard_illuminant
+	return XyzToLabWhiteRef(x, y, z, D65)
+}
+
+func XyzToLabWhiteRef(x, y, z float64, wref [3]float64) (l, a, b float64) {
+	fy := lab_f(y / wref[1])
+	l = 1.16*fy - 0.16
+	a = 5.0 * (lab_f(x/wref[0]) - fy)
+	b = 2.0 * (fy - lab_f(z/wref[2]))
+	return
+}
+
+func lab_finv(t float64) float64 {
+	if t > 6.0/29.0 {
+		return t * t * t
+	}
+	return 3.0 * 6.0 / 29.0 * 6.0 / 29.0 * (t - 4.0/29.0)
+}
+
+func LabToXyz(l, a, b float64) (x, y, z float64) {
+	// D65 white (see above).
+	return LabToXyzWhiteRef(l, a, b, D65)
+}
+
+func LabToXyzWhiteRef(l, a, b float64, wref [3]float64) (x, y, z float64) {
+	l2 := (l + 0.16) / 1.16
+	x = wref[0] * lab_finv(l2+a/5.0)
+	y = wref[1] * lab_finv(l2)
+	z = wref[2] * lab_finv(l2-b/2.0)
+	return
+}
+
+// Converts the given color to CIE L*a*b* space using D65 as reference white.
+func (col Color) Lab() (l, a, b float64) {
+	return XyzToLab(col.Xyz())
+}
+
+// Converts the given color to CIE L*a*b* space, taking into account
+// a given reference white. (i.e. the monitor's white)
+func (col Color) LabWhiteRef(wref [3]float64) (l, a, b float64) {
+	x, y, z := col.Xyz()
+	return XyzToLabWhiteRef(x, y, z, wref)
+}
+
+// Generates a color by using data given in CIE L*a*b* space using D65 as reference white.
+// WARNING: many combinations of `l`, `a`, and `b` values do not have corresponding
+//          valid RGB values, check the FAQ in the README if you're unsure.
+func Lab(l, a, b float64) Color {
+	return Xyz(LabToXyz(l, a, b))
+}
+
+// Generates a color by using data given in CIE L*a*b* space, taking
+// into account a given reference white. (i.e. the monitor's white)
+func LabWhiteRef(l, a, b float64, wref [3]float64) Color {
+	return Xyz(LabToXyzWhiteRef(l, a, b, wref))
+}
+
+// DistanceLab is a good measure of visual similarity between two colors!
+// A result of 0 would mean identical colors, while a result of 1 or higher
+// means the colors differ a lot.
+func (c1 Color) DistanceLab(c2 Color) float64 {
+	l1, a1, b1 := c1.Lab()
+	l2, a2, b2 := c2.Lab()
+	return math.Sqrt(sq(l1-l2) + sq(a1-a2) + sq(b1-b2))
+}
+
+// That's actually the same, but I don't want to break code.
+func (c1 Color) DistanceCIE76(c2 Color) float64 {
+	return c1.DistanceLab(c2)
+}
+
+// Uses the CIE94 formula to calculate color distance. More accurate than
+// DistanceLab, but also more work.
+func (cl Color) DistanceCIE94(cr Color) float64 {
+	l1, a1, b1 := cl.Lab()
+	l2, a2, b2 := cr.Lab()
+
+	// NOTE: Since all those formulas expect L,a,b values 100x larger than we
+	//       have them in this library, we either need to adjust all constants
+	//       in the formula, or convert the ranges of L,a,b before, and then
+	//       scale the distances down again. The latter is less error-prone.
+	l1, a1, b1 = l1*100.0, a1*100.0, b1*100.0
+	l2, a2, b2 = l2*100.0, a2*100.0, b2*100.0
+
+	kl := 1.0 // 2.0 for textiles
+	kc := 1.0
+	kh := 1.0
+	k1 := 0.045 // 0.048 for textiles
+	k2 := 0.015 // 0.014 for textiles.
+
+	deltaL := l1 - l2
+	c1 := math.Sqrt(sq(a1) + sq(b1))
+	c2 := math.Sqrt(sq(a2) + sq(b2))
+	deltaCab := c1 - c2
+
+	// Not taking Sqrt here for stability, and it's unnecessary.
+	deltaHab2 := sq(a1-a2) + sq(b1-b2) - sq(deltaCab)
+	sl := 1.0
+	sc := 1.0 + k1*c1
+	sh := 1.0 + k2*c1
+
+	vL2 := sq(deltaL / (kl * sl))
+	vC2 := sq(deltaCab / (kc * sc))
+	vH2 := deltaHab2 / sq(kh*sh)
+
+	return math.Sqrt(vL2+vC2+vH2) * 0.01 // See above.
+}
+
+// DistanceCIEDE2000 uses the Delta E 2000 formula to calculate color
+// distance. It is more expensive but more accurate than both DistanceLab
+// and DistanceCIE94.
+func (cl Color) DistanceCIEDE2000(cr Color) float64 {
+	return cl.DistanceCIEDE2000klch(cr, 1.0, 1.0, 1.0)
+}
+
+// DistanceCIEDE2000klch uses the Delta E 2000 formula with custom values
+// for the weighting factors kL, kC, and kH.
+func (cl Color) DistanceCIEDE2000klch(cr Color, kl, kc, kh float64) float64 {
+	l1, a1, b1 := cl.Lab()
+	l2, a2, b2 := cr.Lab()
+
+	// As with CIE94, we scale up the ranges of L,a,b beforehand and scale
+	// them down again afterwards.
+	l1, a1, b1 = l1*100.0, a1*100.0, b1*100.0
+	l2, a2, b2 = l2*100.0, a2*100.0, b2*100.0
+
+	cab1 := math.Sqrt(sq(a1) + sq(b1))
+	cab2 := math.Sqrt(sq(a2) + sq(b2))
+	cabmean := (cab1 + cab2) / 2
+
+	g := 0.5 * (1 - math.Sqrt(math.Pow(cabmean, 7)/(math.Pow(cabmean, 7)+math.Pow(25, 7))))
+	ap1 := (1 + g) * a1
+	ap2 := (1 + g) * a2
+	cp1 := math.Sqrt(sq(ap1) + sq(b1))
+	cp2 := math.Sqrt(sq(ap2) + sq(b2))
+
+	hp1 := 0.0
+	if b1 != ap1 || ap1 != 0 {
+		hp1 = math.Atan2(b1, ap1)
+		if hp1 < 0 {
+			hp1 += math.Pi * 2
+		}
+		hp1 *= 180 / math.Pi
+	}
+	hp2 := 0.0
+	if b2 != ap2 || ap2 != 0 {
+		hp2 = math.Atan2(b2, ap2)
+		if hp2 < 0 {
+			hp2 += math.Pi * 2
+		}
+		hp2 *= 180 / math.Pi
+	}
+
+	deltaLp := l2 - l1
+	deltaCp := cp2 - cp1
+	dhp := 0.0
+	cpProduct := cp1 * cp2
+	if cpProduct != 0 {
+		dhp = hp2 - hp1
+		if dhp > 180 {
+			dhp -= 360
+		} else if dhp < -180 {
+			dhp += 360
+		}
+	}
+	deltaHp := 2 * math.Sqrt(cpProduct) * math.Sin(dhp/2*math.Pi/180)
+
+	lpmean := (l1 + l2) / 2
+	cpmean := (cp1 + cp2) / 2
+	hpmean := hp1 + hp2
+	if cpProduct != 0 {
+		hpmean /= 2
+		if math.Abs(hp1-hp2) > 180 {
+			if hp1+hp2 < 360 {
+				hpmean += 180
+			} else {
+				hpmean -= 180
+			}
+		}
+	}
+
+	t := 1 - 0.17*math.Cos((hpmean-30)*math.Pi/180) + 0.24*math.Cos(2*hpmean*math.Pi/180) + 0.32*math.Cos((3*hpmean+6)*math.Pi/180) - 0.2*math.Cos((4*hpmean-63)*math.Pi/180)
+	deltaTheta := 30 * math.Exp(-sq((hpmean-275)/25))
+	rc := 2 * math.Sqrt(math.Pow(cpmean, 7)/(math.Pow(cpmean, 7)+math.Pow(25, 7)))
+	sl := 1 + (0.015*sq(lpmean-50))/math.Sqrt(20+sq(lpmean-50))
+	sc := 1 + 0.045*cpmean
+	sh := 1 + 0.015*cpmean*t
+	rt := -math.Sin(2*deltaTheta*math.Pi/180) * rc
+
+	return math.Sqrt(sq(deltaLp/(kl*sl))+sq(deltaCp/(kc*sc))+sq(deltaHp/(kh*sh))+rt*(deltaCp/(kc*sc))*(deltaHp/(kh*sh))) * 0.01
+}
+
+// BlendLab blends two colors in the L*a*b* color-space, which should result in a smoother blend.
+// t == 0 results in c1, t == 1 results in c2
+func (c1 Color) BlendLab(c2 Color, t float64) Color {
+	l1, a1, b1 := c1.Lab()
+	l2, a2, b2 := c2.Lab()
+	return Lab(l1+t*(l2-l1),
+		a1+t*(a2-a1),
+		b1+t*(b2-b1))
+}
+
+/// L*u*v* ///
+//////////////
+// http://en.wikipedia.org/wiki/CIELUV#XYZ_.E2.86.92_CIELUV_and_CIELUV_.E2.86.92_XYZ_conversions
+// For L*u*v*, we need to L*u*v*<->XYZ<->RGB and the first one is device dependent.
+
+func XyzToLuv(x, y, z float64) (l, a, b float64) {
+	// Use D65 white as reference point by default.
+	// http://www.fredmiranda.com/forum/topic/1035332
+	// http://en.wikipedia.org/wiki/Standard_illuminant
+	return XyzToLuvWhiteRef(x, y, z, D65)
+}
+
+func XyzToLuvWhiteRef(x, y, z float64, wref [3]float64) (l, u, v float64) {
+	if y/wref[1] <= 6.0/29.0*6.0/29.0*6.0/29.0 {
+		l = y / wref[1] * 29.0 / 3.0 * 29.0 / 3.0 * 29.0 / 3.0
+	} else {
+		l = 1.16*math.Cbrt(y/wref[1]) - 0.16
+	}
+	ubis, vbis := xyz_to_uv(x, y, z)
+	un, vn := xyz_to_uv(wref[0], wref[1], wref[2])
+	u = 13.0 * l * (ubis - un)
+	v = 13.0 * l * (vbis - vn)
+	return
+}
+
+// For this part, we do as R's graphics.hcl does, not as wikipedia does.
+// Or is it the same?
+func xyz_to_uv(x, y, z float64) (u, v float64) {
+	denom := x + 15.0*y + 3.0*z
+	if denom == 0.0 {
+		u, v = 0.0, 0.0
+	} else {
+		u = 4.0 * x / denom
+		v = 9.0 * y / denom
+	}
+	return
+}
+
+func LuvToXyz(l, u, v float64) (x, y, z float64) {
+	// D65 white (see above).
+	return LuvToXyzWhiteRef(l, u, v, D65)
+}
+
+func LuvToXyzWhiteRef(l, u, v float64, wref [3]float64) (x, y, z float64) {
+	//y = wref[1] * lab_finv((l + 0.16) / 1.16)
+	if l <= 0.08 {
+		y = wref[1] * l * 100.0 * 3.0 / 29.0 * 3.0 / 29.0 * 3.0 / 29.0
+	} else {
+		y = wref[1] * cub((l+0.16)/1.16)
+	}
+	un, vn := xyz_to_uv(wref[0], wref[1], wref[2])
+	if l != 0.0 {
+		ubis := u/(13.0*l) + un
+		vbis := v/(13.0*l) + vn
+		x = y * 9.0 * ubis / (4.0 * vbis)
+		z = y * (12.0 - 3.0*ubis - 20.0*vbis) / (4.0 * vbis)
+	} else {
+		x, y = 0.0, 0.0
+	}
+	return
+}
+
+// Converts the given color to CIE L*u*v* space using D65 as reference white.
+// L* is in [0..1] and both u* and v* are in about [-1..1]
+func (col Color) Luv() (l, u, v float64) {
+	return XyzToLuv(col.Xyz())
+}
+
+// Converts the given color to CIE L*u*v* space, taking into account
+// a given reference white. (i.e. the monitor's white)
+// L* is in [0..1] and both u* and v* are in about [-1..1]
+func (col Color) LuvWhiteRef(wref [3]float64) (l, u, v float64) {
+	x, y, z := col.Xyz()
+	return XyzToLuvWhiteRef(x, y, z, wref)
+}
+
+// Generates a color by using data given in CIE L*u*v* space using D65 as reference white.
+// L* is in [0..1] and both u* and v* are in about [-1..1]
+// WARNING: many combinations of `l`, `a`, and `b` values do not have corresponding
+//          valid RGB values, check the FAQ in the README if you're unsure.
+func Luv(l, u, v float64) Color {
+	return Xyz(LuvToXyz(l, u, v))
+}
+
+// Generates a color by using data given in CIE L*u*v* space, taking
+// into account a given reference white. (i.e. the monitor's white)
+// L* is in [0..1] and both u* and v* are in about [-1..1]
+func LuvWhiteRef(l, u, v float64, wref [3]float64) Color {
+	return Xyz(LuvToXyzWhiteRef(l, u, v, wref))
+}
+
+// DistanceLuv is a good measure of visual similarity between two colors!
+// A result of 0 would mean identical colors, while a result of 1 or higher
+// means the colors differ a lot.
+func (c1 Color) DistanceLuv(c2 Color) float64 {
+	l1, u1, v1 := c1.Luv()
+	l2, u2, v2 := c2.Luv()
+	return math.Sqrt(sq(l1-l2) + sq(u1-u2) + sq(v1-v2))
+}
+
+// BlendLuv blends two colors in the CIE-L*u*v* color-space, which should result in a smoother blend.
+// t == 0 results in c1, t == 1 results in c2
+func (c1 Color) BlendLuv(c2 Color, t float64) Color {
+	l1, u1, v1 := c1.Luv()
+	l2, u2, v2 := c2.Luv()
+	return Luv(l1+t*(l2-l1),
+		u1+t*(u2-u1),
+		v1+t*(v2-v1))
+}
+
+/// HCL ///
+///////////
+// HCL is nothing else than L*a*b* in cylindrical coordinates!
+// (this was wrong on English wikipedia, I fixed it, let's hope the fix stays.)
+// But it is widely popular since it is a "correct HSV"
+// http://www.hunterlab.com/appnotes/an09_96a.pdf
+
+// Converts the given color to HCL space using D65 as reference white.
+// H values are in [0..360], C and L values are in [0..1] although C can overshoot 1.0
+func (col Color) Hcl() (h, c, l float64) {
+	return col.HclWhiteRef(D65)
+}
+
+func LabToHcl(L, a, b float64) (h, c, l float64) {
+	// Oops, floating point workaround necessary if a ~= b and both are very small (i.e. almost zero).
+	if math.Abs(b-a) > 1e-4 && math.Abs(a) > 1e-4 {
+		h = math.Mod(57.29577951308232087721*math.Atan2(b, a)+360.0, 360.0) // Rad2Deg
+	} else {
+		h = 0.0
+	}
+	c = math.Sqrt(sq(a) + sq(b))
+	l = L
+	return
+}
+
+// Converts the given color to HCL space, taking into account
+// a given reference white. (i.e. the monitor's white)
+// H values are in [0..360], C and L values are in [0..1]
+func (col Color) HclWhiteRef(wref [3]float64) (h, c, l float64) {
+	L, a, b := col.LabWhiteRef(wref)
+	return LabToHcl(L, a, b)
+}
+
+// Generates a color by using data given in HCL space using D65 as reference white.
+// H values are in [0..360], C and L values are in [0..1]
+// WARNING: many combinations of `l`, `a`, and `b` values do not have corresponding
+//          valid RGB values, check the FAQ in the README if you're unsure.
+func Hcl(h, c, l float64) Color {
+	return HclWhiteRef(h, c, l, D65)
+}
+
+func HclToLab(h, c, l float64) (L, a, b float64) {
+	H := 0.01745329251994329576 * h // Deg2Rad
+	a = c * math.Cos(H)
+	b = c * math.Sin(H)
+	L = l
+	return
+}
+
+// Generates a color by using data given in HCL space, taking
+// into account a given reference white. (i.e. the monitor's white)
+// H values are in [0..360], C and L values are in [0..1]
+func HclWhiteRef(h, c, l float64, wref [3]float64) Color {
+	L, a, b := HclToLab(h, c, l)
+	return LabWhiteRef(L, a, b, wref)
+}
+
+// BlendHcl blends two colors in the CIE-L*C*h° color-space, which should result in a smoother blend.
+// t == 0 results in c1, t == 1 results in c2
+func (col1 Color) BlendHcl(col2 Color, t float64) Color {
+	h1, c1, l1 := col1.Hcl()
+	h2, c2, l2 := col2.Hcl()
+
+	// We know that h are both in [0..360]
+	return Hcl(interp_angle(h1, h2, t), c1+t*(c2-c1), l1+t*(l2-l1))
+}
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/happy_palettegen.go b/vendor/github.com/lucasb-eyer/go-colorful/happy_palettegen.go
new file mode 100644
index 0000000..bb66dfa
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/happy_palettegen.go
@@ -0,0 +1,25 @@
+package colorful
+
+import (
+	"math/rand"
+)
+
+// Uses the HSV color space to generate colors with similar S,V but distributed
+// evenly along their Hue. This is fast but not always pretty.
+// If you've got time to spare, use Lab (the non-fast below).
+func FastHappyPalette(colorsCount int) (colors []Color) {
+	colors = make([]Color, colorsCount)
+
+	for i := 0; i < colorsCount; i++ {
+		colors[i] = Hsv(float64(i)*(360.0/float64(colorsCount)), 0.8+rand.Float64()*0.2, 0.65+rand.Float64()*0.2)
+	}
+	return
+}
+
+func HappyPalette(colorsCount int) ([]Color, error) {
+	pimpy := func(l, a, b float64) bool {
+		_, c, _ := LabToHcl(l, a, b)
+		return 0.3 <= c && 0.4 <= l && l <= 0.8
+	}
+	return SoftPaletteEx(colorsCount, SoftPaletteSettings{pimpy, 50, true})
+}
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/hexcolor.go b/vendor/github.com/lucasb-eyer/go-colorful/hexcolor.go
new file mode 100644
index 0000000..86a5ed9
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/hexcolor.go
@@ -0,0 +1,37 @@
+package colorful
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"reflect"
+)
+
+// A HexColor is a Color stored as a hex string "#rrggbb". It implements the
+// database/sql.Scanner and database/sql/driver.Value interfaces.
+type HexColor Color
+
+type errUnsupportedType struct {
+	got  interface{}
+	want reflect.Type
+}
+
+func (hc *HexColor) Scan(value interface{}) error {
+	s, ok := value.(string)
+	if !ok {
+		return errUnsupportedType{got: reflect.TypeOf(value), want: reflect.TypeOf("")}
+	}
+	c, err := Hex(s)
+	if err != nil {
+		return err
+	}
+	*hc = HexColor(c)
+	return nil
+}
+
+func (hc *HexColor) Value() (driver.Value, error) {
+	return Color(*hc).Hex(), nil
+}
+
+func (e errUnsupportedType) Error() string {
+	return fmt.Sprintf("unsupported type: got %v, want a %s", e.got, e.want)
+}
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/soft_palettegen.go b/vendor/github.com/lucasb-eyer/go-colorful/soft_palettegen.go
new file mode 100644
index 0000000..0154ac9
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/soft_palettegen.go
@@ -0,0 +1,185 @@
+// Largely inspired by the descriptions in http://lab.medialab.sciences-po.fr/iwanthue/
+// but written from scratch.
+
+package colorful
+
+import (
+	"fmt"
+	"math"
+	"math/rand"
+)
+
+// The algorithm works in L*a*b* color space and converts to RGB in the end.
+// L* in [0..1], a* and b* in [-1..1]
+type lab_t struct {
+	L, A, B float64
+}
+
+type SoftPaletteSettings struct {
+	// A function which can be used to restrict the allowed color-space.
+	CheckColor func(l, a, b float64) bool
+
+	// The higher, the better quality but the slower. Usually two figures.
+	Iterations int
+
+	// Use up to 160000 or 8000 samples of the L*a*b* space (and thus calls to CheckColor).
+	// Set this to true only if your CheckColor shapes the Lab space weirdly.
+	ManySamples bool
+}
+
+// Yeah, windows-stype Foo, FooEx, screw you golang...
+// Uses K-means to cluster the color-space and return the means of the clusters
+// as a new palette of distinctive colors. Falls back to K-medoid if the mean
+// happens to fall outside of the color-space, which can only happen if you
+// specify a CheckColor function.
+func SoftPaletteEx(colorsCount int, settings SoftPaletteSettings) ([]Color, error) {
+
+	// Checks whether it's a valid RGB and also fulfills the potentially provided constraint.
+	check := func(col lab_t) bool {
+		c := Lab(col.L, col.A, col.B)
+		return c.IsValid() && (settings.CheckColor == nil || settings.CheckColor(col.L, col.A, col.B))
+	}
+
+	// Sample the color space. These will be the points k-means is run on.
+	dl := 0.05
+	dab := 0.1
+	if settings.ManySamples {
+		dl = 0.01
+		dab = 0.05
+	}
+
+	samples := make([]lab_t, 0, int(1.0/dl*2.0/dab*2.0/dab))
+	for l := 0.0; l <= 1.0; l += dl {
+		for a := -1.0; a <= 1.0; a += dab {
+			for b := -1.0; b <= 1.0; b += dab {
+				if check(lab_t{l, a, b}) {
+					samples = append(samples, lab_t{l, a, b})
+				}
+			}
+		}
+	}
+
+	// That would cause some infinite loops down there...
+	if len(samples) < colorsCount {
+		return nil, fmt.Errorf("palettegen: more colors requested (%v) than samples available (%v). Your requested color count may be wrong, you might want to use many samples or your constraint function makes the valid color space too small.", colorsCount, len(samples))
+	} else if len(samples) == colorsCount {
+		return labs2cols(samples), nil // Oops?
+	}
+
+	// We take the initial means out of the samples, so they are in fact medoids.
+	// This helps us avoid infinite loops or arbitrary cutoffs with too restrictive constraints.
+	means := make([]lab_t, colorsCount)
+	for i := 0; i < colorsCount; i++ {
+		for means[i] = samples[rand.Intn(len(samples))]; in(means, i, means[i]); means[i] = samples[rand.Intn(len(samples))] {
+		}
+	}
+
+	clusters := make([]int, len(samples))
+	samples_used := make([]bool, len(samples))
+
+	// The actual k-means/medoid iterations
+	for i := 0; i < settings.Iterations; i++ {
+		// Reassing the samples to clusters, i.e. to their closest mean.
+		// By the way, also check if any sample is used as a medoid and if so, mark that.
+		for isample, sample := range samples {
+			samples_used[isample] = false
+			mindist := math.Inf(+1)
+			for imean, mean := range means {
+				dist := lab_dist(sample, mean)
+				if dist < mindist {
+					mindist = dist
+					clusters[isample] = imean
+				}
+
+				// Mark samples which are used as a medoid.
+				if lab_eq(sample, mean) {
+					samples_used[isample] = true
+				}
+			}
+		}
+
+		// Compute new means according to the samples.
+		for imean := range means {
+			// The new mean is the average of all samples belonging to it..
+			nsamples := 0
+			newmean := lab_t{0.0, 0.0, 0.0}
+			for isample, sample := range samples {
+				if clusters[isample] == imean {
+					nsamples++
+					newmean.L += sample.L
+					newmean.A += sample.A
+					newmean.B += sample.B
+				}
+			}
+			if nsamples > 0 {
+				newmean.L /= float64(nsamples)
+				newmean.A /= float64(nsamples)
+				newmean.B /= float64(nsamples)
+			} else {
+				// That mean doesn't have any samples? Get a new mean from the sample list!
+				var inewmean int
+				for inewmean = rand.Intn(len(samples_used)); samples_used[inewmean]; inewmean = rand.Intn(len(samples_used)) {
+				}
+				newmean = samples[inewmean]
+				samples_used[inewmean] = true
+			}
+
+			// But now we still need to check whether the new mean is an allowed color.
+			if nsamples > 0 && check(newmean) {
+				// It does, life's good (TM)
+				means[imean] = newmean
+			} else {
+				// New mean isn't an allowed color or doesn't have any samples!
+				// Switch to medoid mode and pick the closest (unused) sample.
+				// This should always find something thanks to len(samples) >= colorsCount
+				mindist := math.Inf(+1)
+				for isample, sample := range samples {
+					if !samples_used[isample] {
+						dist := lab_dist(sample, newmean)
+						if dist < mindist {
+							mindist = dist
+							newmean = sample
+						}
+					}
+				}
+			}
+		}
+	}
+	return labs2cols(means), nil
+}
+
+// A wrapper which uses common parameters.
+func SoftPalette(colorsCount int) ([]Color, error) {
+	return SoftPaletteEx(colorsCount, SoftPaletteSettings{nil, 50, false})
+}
+
+func in(haystack []lab_t, upto int, needle lab_t) bool {
+	for i := 0; i < upto && i < len(haystack); i++ {
+		if haystack[i] == needle {
+			return true
+		}
+	}
+	return false
+}
+
+const LAB_DELTA = 1e-6
+
+func lab_eq(lab1, lab2 lab_t) bool {
+	return math.Abs(lab1.L-lab2.L) < LAB_DELTA &&
+		math.Abs(lab1.A-lab2.A) < LAB_DELTA &&
+		math.Abs(lab1.B-lab2.B) < LAB_DELTA
+}
+
+// That's faster than using colorful's DistanceLab since we would have to
+// convert back and forth for that. Here is no conversion.
+func lab_dist(lab1, lab2 lab_t) float64 {
+	return math.Sqrt(sq(lab1.L-lab2.L) + sq(lab1.A-lab2.A) + sq(lab1.B-lab2.B))
+}
+
+func labs2cols(labs []lab_t) (cols []Color) {
+	cols = make([]Color, len(labs))
+	for k, v := range labs {
+		cols[k] = Lab(v.L, v.A, v.B)
+	}
+	return cols
+}
diff --git a/vendor/github.com/lucasb-eyer/go-colorful/warm_palettegen.go b/vendor/github.com/lucasb-eyer/go-colorful/warm_palettegen.go
new file mode 100644
index 0000000..00f42a5
--- /dev/null
+++ b/vendor/github.com/lucasb-eyer/go-colorful/warm_palettegen.go
@@ -0,0 +1,25 @@
+package colorful
+
+import (
+	"math/rand"
+)
+
+// Uses the HSV color space to generate colors with similar S,V but distributed
+// evenly along their Hue. This is fast but not always pretty.
+// If you've got time to spare, use Lab (the non-fast below).
+func FastWarmPalette(colorsCount int) (colors []Color) {
+	colors = make([]Color, colorsCount)
+
+	for i := 0; i < colorsCount; i++ {
+		colors[i] = Hsv(float64(i)*(360.0/float64(colorsCount)), 0.55+rand.Float64()*0.2, 0.35+rand.Float64()*0.2)
+	}
+	return
+}
+
+func WarmPalette(colorsCount int) ([]Color, error) {
+	warmy := func(l, a, b float64) bool {
+		_, c, _ := LabToHcl(l, a, b)
+		return 0.1 <= c && c <= 0.4 && 0.2 <= l && l <= 0.5
+	}
+	return SoftPaletteEx(colorsCount, SoftPaletteSettings{warmy, 50, true})
+}
diff --git a/vendor/github.com/miguelmota/gocui/attribute.go b/vendor/github.com/miguelmota/gocui/attribute.go
deleted file mode 100644
index a52fd76..0000000
--- a/vendor/github.com/miguelmota/gocui/attribute.go
+++ /dev/null
@@ -1,32 +0,0 @@
-// Copyright 2014 The gocui Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package gocui
-
-import "github.com/miguelmota/termbox-go"
-
-// Attribute represents a terminal attribute, like color, font style, etc. They
-// can be combined using bitwise OR (|). Note that it is not possible to
-// combine multiple color attributes.
-type Attribute termbox.Attribute
-
-// Color attributes.
-const (
-	ColorDefault Attribute = Attribute(termbox.ColorDefault)
-	ColorBlack             = Attribute(termbox.ColorBlack)
-	ColorRed               = Attribute(termbox.ColorRed)
-	ColorGreen             = Attribute(termbox.ColorGreen)
-	ColorYellow            = Attribute(termbox.ColorYellow)
-	ColorBlue              = Attribute(termbox.ColorBlue)
-	ColorMagenta           = Attribute(termbox.ColorMagenta)
-	ColorCyan              = Attribute(termbox.ColorCyan)
-	ColorWhite             = Attribute(termbox.ColorWhite)
-)
-
-// Text style attributes.
-const (
-	AttrBold      Attribute = Attribute(termbox.AttrBold)
-	AttrUnderline           = Attribute(termbox.AttrUnderline)
-	AttrReverse             = Attribute(termbox.AttrReverse)
-)
diff --git a/vendor/github.com/miguelmota/gocui/doc.go b/vendor/github.com/miguelmota/gocui/doc.go
deleted file mode 100644
index fe128af..0000000
--- a/vendor/github.com/miguelmota/gocui/doc.go
+++ /dev/null
@@ -1,118 +0,0 @@
-// Copyright 2014 The gocui Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-/*
-Package gocui allows to create console user interfaces.
-
-Create a new GUI:
-
-	g, err := gocui.NewGui(gocui.OutputNormal)
-	if err != nil {
-		// handle error
-	}
-	defer g.Close()
-
-	// Set GUI managers and key bindings
-	// ...
-
-	if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
-		// handle error
-	}
-
-Set GUI managers:
-
-	g.SetManager(mgr1, mgr2)
-
-Managers are in charge of GUI's layout and can be used to build widgets. On
-each iteration of the GUI's main loop, the Layout function of each configured
-manager is executed. Managers are used to set-up and update the application's
-main views, being possible to freely change them during execution. Also, it is
-important to mention that a main loop iteration is executed on each reported
-event (key-press, mouse event, window resize, etc).
-
-GUIs are composed by Views, you can think of it as buffers. Views implement the
-io.ReadWriter interface, so you can just write to them if you want to modify
-their content. The same is valid for reading.
-
-Create and initialize a view with absolute coordinates:
-
-	if v, err := g.SetView("viewname", 2, 2, 22, 7); err != nil {
-		if err != gocui.ErrUnknownView {
-			// handle error
-		}
-		fmt.Fprintln(v, "This is a new view")
-		// ...
-	}
-
-Views can also be created using relative coordinates:
-
-	maxX, maxY := g.Size()
-	if v, err := g.SetView("viewname", maxX/2-30, maxY/2, maxX/2+30, maxY/2+2); err != nil {
-		// ...
-	}
-
-Configure keybindings:
-
-	if err := g.SetKeybinding("viewname", gocui.KeyEnter, gocui.ModNone, fcn); err != nil {
-		// handle error
-	}
-
-gocui implements full mouse support that can be enabled with:
-
-	g.Mouse = true
-
-Mouse events are handled like any other keybinding:
-
-	if err := g.SetKeybinding("viewname", gocui.MouseLeft, gocui.ModNone, fcn); err != nil {
-		// handle error
-	}
-
-IMPORTANT: Views can only be created, destroyed or updated in three ways: from
-the Layout function within managers, from keybinding callbacks or via
-*Gui.Update(). The reason for this is that it allows gocui to be
-concurrent-safe. So, if you want to update your GUI from a goroutine, you must
-use *Gui.Update(). For example:
-
-	g.Update(func(g *gocui.Gui) error {
-		v, err := g.View("viewname")
-		if err != nil {
-			// handle error
-		}
-		v.Clear()
-		fmt.Fprintln(v, "Writing from different goroutines")
-		return nil
-	})
-
-By default, gocui provides a basic edition mode. This mode can be extended
-and customized creating a new Editor and assigning it to *View.Editor:
-
-	type Editor interface {
-		Edit(v *View, key Key, ch rune, mod Modifier)
-	}
-
-DefaultEditor can be taken as example to create your own custom Editor:
-
-	var DefaultEditor Editor = EditorFunc(simpleEditor)
-
-	func simpleEditor(v *View, key Key, ch rune, mod Modifier) {
-		switch {
-		case ch != 0 && mod == 0:
-			v.EditWrite(ch)
-		case key == KeySpace:
-			v.EditWrite(' ')
-		case key == KeyBackspace || key == KeyBackspace2:
-			v.EditDelete(true)
-		// ...
-		}
-	}
-
-Colored text:
-
-Views allow to add colored text using ANSI colors. For example:
-
-	fmt.Fprintln(v, "\x1b[0;31mHello world")
-
-For more information, see the examples in folder "_examples/".
-*/
-package gocui
diff --git a/vendor/github.com/miguelmota/gocui/keybinding.go b/vendor/github.com/miguelmota/gocui/keybinding.go
deleted file mode 100644
index db8fcf3..0000000
--- a/vendor/github.com/miguelmota/gocui/keybinding.go
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2014 The gocui Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package gocui
-
-import "github.com/miguelmota/termbox-go"
-
-// Keybidings are used to link a given key-press event with a handler.
-type keybinding struct {
-	viewName string
-	key      Key
-	ch       rune
-	mod      Modifier
-	handler  func(*Gui, *View) error
-}
-
-// newKeybinding returns a new Keybinding object.
-func newKeybinding(viewname string, key Key, ch rune, mod Modifier, handler func(*Gui, *View) error) (kb *keybinding) {
-	kb = &keybinding{
-		viewName: viewname,
-		key:      key,
-		ch:       ch,
-		mod:      mod,
-		handler:  handler,
-	}
-	return kb
-}
-
-// matchKeypress returns if the keybinding matches the keypress.
-func (kb *keybinding) matchKeypress(key Key, ch rune, mod Modifier) bool {
-	return kb.key == key && kb.ch == ch && kb.mod == mod
-}
-
-// matchView returns if the keybinding matches the current view.
-func (kb *keybinding) matchView(v *View) bool {
-	if kb.viewName == "" {
-		return true
-	}
-	return v != nil && kb.viewName == v.name
-}
-
-// Key represents special keys or keys combinations.
-type Key termbox.Key
-
-// Special keys.
-const (
-	KeyF1         Key = Key(termbox.KeyF1)
-	KeyF2             = Key(termbox.KeyF2)
-	KeyF3             = Key(termbox.KeyF3)
-	KeyF4             = Key(termbox.KeyF4)
-	KeyF5             = Key(termbox.KeyF5)
-	KeyF6             = Key(termbox.KeyF6)
-	KeyF7             = Key(termbox.KeyF7)
-	KeyF8             = Key(termbox.KeyF8)
-	KeyF9             = Key(termbox.KeyF9)
-	KeyF10            = Key(termbox.KeyF10)
-	KeyF11            = Key(termbox.KeyF11)
-	KeyF12            = Key(termbox.KeyF12)
-	KeyInsert         = Key(termbox.KeyInsert)
-	KeyDelete         = Key(termbox.KeyDelete)
-	KeyHome           = Key(termbox.KeyHome)
-	KeyEnd            = Key(termbox.KeyEnd)
-	KeyPgup           = Key(termbox.KeyPgup)
-	KeyPgdn           = Key(termbox.KeyPgdn)
-	KeyArrowUp        = Key(termbox.KeyArrowUp)
-	KeyArrowDown      = Key(termbox.KeyArrowDown)
-	KeyArrowLeft      = Key(termbox.KeyArrowLeft)
-	KeyArrowRight     = Key(termbox.KeyArrowRight)
-
-	MouseLeft      = Key(termbox.MouseLeft)
-	MouseMiddle    = Key(termbox.MouseMiddle)
-	MouseRight     = Key(termbox.MouseRight)
-	MouseRelease   = Key(termbox.MouseRelease)
-	MouseWheelUp   = Key(termbox.MouseWheelUp)
-	MouseWheelDown = Key(termbox.MouseWheelDown)
-)
-
-// Keys combinations.
-const (
-	KeyCtrlTilde      Key = Key(termbox.KeyCtrlTilde)
-	KeyCtrl2              = Key(termbox.KeyCtrl2)
-	KeyCtrlSpace          = Key(termbox.KeyCtrlSpace)
-	KeyCtrlA              = Key(termbox.KeyCtrlA)
-	KeyCtrlB              = Key(termbox.KeyCtrlB)
-	KeyCtrlC              = Key(termbox.KeyCtrlC)
-	KeyCtrlD              = Key(termbox.KeyCtrlD)
-	KeyCtrlE              = Key(termbox.KeyCtrlE)
-	KeyCtrlF              = Key(termbox.KeyCtrlF)
-	KeyCtrlG              = Key(termbox.KeyCtrlG)
-	KeyBackspace          = Key(termbox.KeyBackspace)
-	KeyCtrlH              = Key(termbox.KeyCtrlH)
-	KeyTab                = Key(termbox.KeyTab)
-	KeyCtrlI              = Key(termbox.KeyCtrlI)
-	KeyCtrlJ              = Key(termbox.KeyCtrlJ)
-	KeyCtrlK              = Key(termbox.KeyCtrlK)
-	KeyCtrlL              = Key(termbox.KeyCtrlL)
-	KeyEnter              = Key(termbox.KeyEnter)
-	KeyCtrlM              = Key(termbox.KeyCtrlM)
-	KeyCtrlN              = Key(termbox.KeyCtrlN)
-	KeyCtrlO              = Key(termbox.KeyCtrlO)
-	KeyCtrlP              = Key(termbox.KeyCtrlP)
-	KeyCtrlQ              = Key(termbox.KeyCtrlQ)
-	KeyCtrlR              = Key(termbox.KeyCtrlR)
-	KeyCtrlS              = Key(termbox.KeyCtrlS)
-	KeyCtrlT              = Key(termbox.KeyCtrlT)
-	KeyCtrlU              = Key(termbox.KeyCtrlU)
-	KeyCtrlV              = Key(termbox.KeyCtrlV)
-	KeyCtrlW              = Key(termbox.KeyCtrlW)
-	KeyCtrlX              = Key(termbox.KeyCtrlX)
-	KeyCtrlY              = Key(termbox.KeyCtrlY)
-	KeyCtrlZ              = Key(termbox.KeyCtrlZ)
-	KeyEsc                = Key(termbox.KeyEsc)
-	KeyCtrlLsqBracket     = Key(termbox.KeyCtrlLsqBracket)
-	KeyCtrl3              = Key(termbox.KeyCtrl3)
-	KeyCtrl4              = Key(termbox.KeyCtrl4)
-	KeyCtrlBackslash      = Key(termbox.KeyCtrlBackslash)
-	KeyCtrl5              = Key(termbox.KeyCtrl5)
-	KeyCtrlRsqBracket     = Key(termbox.KeyCtrlRsqBracket)
-	KeyCtrl6              = Key(termbox.KeyCtrl6)
-	KeyCtrl7              = Key(termbox.KeyCtrl7)
-	KeyCtrlSlash          = Key(termbox.KeyCtrlSlash)
-	KeyCtrlUnderscore     = Key(termbox.KeyCtrlUnderscore)
-	KeySpace              = Key(termbox.KeySpace)
-	KeyBackspace2         = Key(termbox.KeyBackspace2)
-	KeyCtrl8              = Key(termbox.KeyCtrl8)
-)
-
-// Modifier allows to define special keys combinations. They can be used
-// in combination with Keys or Runes when a new keybinding is defined.
-type Modifier termbox.Modifier
-
-// Modifiers.
-const (
-	ModNone Modifier = Modifier(0)
-	ModAlt           = Modifier(termbox.ModAlt)
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/AUTHORS b/vendor/github.com/miguelmota/termbox-go/AUTHORS
deleted file mode 100644
index fe26fb0..0000000
--- a/vendor/github.com/miguelmota/termbox-go/AUTHORS
+++ /dev/null
@@ -1,4 +0,0 @@
-# Please keep this file sorted.
-
-Georg Reinke <guelfey@googlemail.com>
-nsf <no.smile.face@gmail.com>
diff --git a/vendor/github.com/miguelmota/termbox-go/LICENSE b/vendor/github.com/miguelmota/termbox-go/LICENSE
deleted file mode 100644
index d9bc068..0000000
--- a/vendor/github.com/miguelmota/termbox-go/LICENSE
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (C) 2012 termbox-go authors
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
diff --git a/vendor/github.com/miguelmota/termbox-go/README.md b/vendor/github.com/miguelmota/termbox-go/README.md
deleted file mode 100644
index 5ef4758..0000000
--- a/vendor/github.com/miguelmota/termbox-go/README.md
+++ /dev/null
@@ -1,50 +0,0 @@
-[![GoDoc](https://godoc.org/github.com/nsf/termbox-go?status.svg)](http://godoc.org/github.com/nsf/termbox-go)
-
-## IMPORTANT
-
-This library is somewhat not maintained anymore. But I'm glad that it did what I wanted the most. It moved people away from "ncurses" mindset and these days we see both re-implementations of termbox API in various languages and even possibly better libs with similar API design. If you're looking for a Go lib that provides terminal-based user interface facilities, I've heard that https://github.com/gdamore/tcell is good (never used it myself). Also for more complicated interfaces and/or computer games I recommend you to consider using HTML-based UI. Having said that, termbox still somewhat works. In fact I'm writing this line of text right now in godit (which is a text editor written using termbox-go). So, be aware. Good luck and have a nice day.
-
-## Termbox
-Termbox is a library that provides a minimalistic API which allows the programmer to write text-based user interfaces. The library is crossplatform and has both terminal-based implementations on *nix operating systems and a winapi console based implementation for windows operating systems. The basic idea is an abstraction of the greatest common subset of features available on all major terminals and other terminal-like APIs in a minimalistic fashion. Small API means it is easy to implement, test, maintain and learn it, that's what makes the termbox a distinct library in its area.
-
-### Installation
-Install and update this go package with `go get -u github.com/nsf/termbox-go`
-
-### Examples
-For examples of what can be done take a look at demos in the _demos directory. You can try them with go run: `go run _demos/keyboard.go`
-
-There are also some interesting projects using termbox-go:
- - [godit](https://github.com/nsf/godit) is an emacsish lightweight text editor written using termbox.
- - [gotetris](https://github.com/jjinux/gotetris) is an implementation of Tetris.
- - [sokoban-go](https://github.com/rn2dy/sokoban-go) is an implementation of sokoban game.
- - [hecate](https://github.com/evanmiller/hecate) is a hex editor designed by Satan.
- - [httopd](https://github.com/verdverm/httopd) is top for httpd logs.
- - [mop](https://github.com/mop-tracker/mop) is stock market tracker for hackers.
- - [termui](https://github.com/gizak/termui) is a terminal dashboard.
- - [termdash](https://github.com/mum4k/termdash) is a terminal dashboard.
- - [termloop](https://github.com/JoelOtter/termloop) is a terminal game engine.
- - [xterm-color-chart](https://github.com/kutuluk/xterm-color-chart) is a XTerm 256 color chart.
- - [gocui](https://github.com/jroimartin/gocui) is a minimalist Go library aimed at creating console user interfaces.
- - [dry](https://github.com/moncho/dry) is an interactive cli to manage Docker containers.
- - [pxl](https://github.com/ichinaski/pxl) displays images in the terminal.
- - [snake-game](https://github.com/DyegoCosta/snake-game) is an implementation of the Snake game.
- - [gone](https://github.com/guillaumebreton/gone) is a CLI pomodoro® timer.
- - [Spoof.go](https://github.com/sabey/spoofgo) controllable movement spoofing from the cli
- - [lf](https://github.com/gokcehan/lf) is a terminal file manager
- - [rat](https://github.com/ericfreese/rat) lets you compose shell commands to build terminal applications.
- - [httplab](https://github.com/gchaincl/httplab) An interactive web server.
- - [tetris](https://github.com/MichaelS11/tetris) Go Tetris with AI option
- - [wot](https://github.com/kyu-suke/wot) Wait time during command is completed.
- - [2048-go](https://github.com/1984weed/2048-go) is 2048 in Go
- - [jv](https://github.com/maxzender/jv) helps you view JSON on the command-line.
- - [pinger](https://github.com/hirose31/pinger) helps you to monitor numerous hosts using ICMP ECHO_REQUEST.
- - [vixl44](https://github.com/sebashwa/vixl44) lets you create pixel art inside your terminal using vim movements
- - [zterm](https://github.com/varunrau/zterm) is a typing game inspired by http://zty.pe/
- - [gotypist](https://github.com/pb-/gotypist) is a fun touch-typing tutor following Steve Yegge's method.
- - [cointop](https://github.com/miguelmota/cointop) is an interactive terminal based UI application for tracking cryptocurrencies.
- - [pexpo](https://github.com/nnao45/pexpo) is a terminal sending ping tool written in Go.
- - [jid](https://github.com/simeji/jid) is an interactive JSON drill down tool using filtering queries like jq.
- - [nonograminGo](https://github.com/N0RM4L15T/nonograminGo) is a nonogram(aka. picross) in Go
-
-### API reference
-[godoc.org/github.com/nsf/termbox-go](http://godoc.org/github.com/nsf/termbox-go)
diff --git a/vendor/github.com/miguelmota/termbox-go/api.go b/vendor/github.com/miguelmota/termbox-go/api.go
deleted file mode 100644
index 3adfdc6..0000000
--- a/vendor/github.com/miguelmota/termbox-go/api.go
+++ /dev/null
@@ -1,500 +0,0 @@
-// +build !windows
-
-package termbox
-
-import (
-	"fmt"
-	"os"
-	"os/signal"
-	"runtime"
-	"syscall"
-	"time"
-
-	"github.com/mattn/go-runewidth"
-)
-
-// public API
-
-// Initializes termbox library. This function should be called before any other functions.
-// After successful initialization, the library must be finalized using 'Close' function.
-//
-// Example usage:
-//      err := termbox.Init()
-//      if err != nil {
-//              panic(err)
-//      }
-//      defer termbox.Close()
-func Init() error {
-	var err error
-
-	if runtime.GOOS == "openbsd" || runtime.GOOS == "freebsd" {
-		out, err = os.OpenFile("/dev/tty", os.O_RDWR, 0)
-		if err != nil {
-			return err
-		}
-		in = int(out.Fd())
-	} else {
-		out, err = os.OpenFile("/dev/tty", os.O_WRONLY, 0)
-		if err != nil {
-			return err
-		}
-		in, err = syscall.Open("/dev/tty", syscall.O_RDONLY, 0)
-		if err != nil {
-			return err
-		}
-	}
-
-	err = setup_term()
-	if err != nil {
-		return fmt.Errorf("termbox: error while reading terminfo data: %v", err)
-	}
-
-	signal.Notify(sigwinch, syscall.SIGWINCH)
-	signal.Notify(sigio, syscall.SIGIO)
-
-	_, err = fcntl(in, syscall.F_SETFL, syscall.O_ASYNC|syscall.O_NONBLOCK)
-	if err != nil {
-		return err
-	}
-	_, err = fcntl(in, syscall.F_SETOWN, syscall.Getpid())
-	if runtime.GOOS != "darwin" && err != nil {
-		return err
-	}
-	err = tcgetattr(out.Fd(), &orig_tios)
-	if err != nil {
-		return err
-	}
-
-	tios := orig_tios
-	tios.Iflag &^= syscall_IGNBRK | syscall_BRKINT | syscall_PARMRK |
-		syscall_ISTRIP | syscall_INLCR | syscall_IGNCR |
-		syscall_ICRNL | syscall_IXON
-	tios.Lflag &^= syscall_ECHO | syscall_ECHONL | syscall_ICANON |
-		syscall_ISIG | syscall_IEXTEN
-	tios.Cflag &^= syscall_CSIZE | syscall_PARENB
-	tios.Cflag |= syscall_CS8
-	tios.Cc[syscall_VMIN] = 1
-	tios.Cc[syscall_VTIME] = 0
-
-	err = tcsetattr(out.Fd(), &tios)
-	if err != nil {
-		return err
-	}
-
-	out.WriteString(funcs[t_enter_ca])
-	out.WriteString(funcs[t_enter_keypad])
-	out.WriteString(funcs[t_hide_cursor])
-	out.WriteString(funcs[t_clear_screen])
-
-	termw, termh = get_term_size(out.Fd())
-	back_buffer.init(termw, termh)
-	front_buffer.init(termw, termh)
-	back_buffer.clear()
-	front_buffer.clear()
-
-	go func() {
-		buf := make([]byte, 128)
-		for {
-			select {
-			case <-sigio:
-				for {
-					n, err := syscall.Read(in, buf)
-					if err == syscall.EAGAIN || err == syscall.EWOULDBLOCK {
-						break
-					}
-					select {
-					case input_comm <- input_event{buf[:n], err}:
-						ie := <-input_comm
-						buf = ie.data[:128]
-					case <-quit:
-						return
-					}
-				}
-			case <-quit:
-				return
-			}
-		}
-	}()
-
-	IsInit = true
-	return nil
-}
-
-// Interrupt an in-progress call to PollEvent by causing it to return
-// EventInterrupt.  Note that this function will block until the PollEvent
-// function has successfully been interrupted.
-func Interrupt() {
-	interrupt_comm <- struct{}{}
-}
-
-// Finalizes termbox library, should be called after successful initialization
-// when termbox's functionality isn't required anymore.
-func Close() {
-	quit <- 1
-	out.WriteString(funcs[t_show_cursor])
-	out.WriteString(funcs[t_sgr0])
-	out.WriteString(funcs[t_clear_screen])
-	out.WriteString(funcs[t_exit_ca])
-	out.WriteString(funcs[t_exit_keypad])
-	out.WriteString(funcs[t_exit_mouse])
-	tcsetattr(out.Fd(), &orig_tios)
-
-	out.Close()
-	syscall.Close(in)
-
-	// reset the state, so that on next Init() it will work again
-	termw = 0
-	termh = 0
-	input_mode = InputEsc
-	out = nil
-	in = 0
-	lastfg = attr_invalid
-	lastbg = attr_invalid
-	lastx = coord_invalid
-	lasty = coord_invalid
-	cursor_x = cursor_hidden
-	cursor_y = cursor_hidden
-	foreground = ColorDefault
-	background = ColorDefault
-	IsInit = false
-}
-
-// Synchronizes the internal back buffer with the terminal.
-func Flush() error {
-	// invalidate cursor position
-	lastx = coord_invalid
-	lasty = coord_invalid
-
-	update_size_maybe()
-
-	for y := 0; y < front_buffer.height; y++ {
-		line_offset := y * front_buffer.width
-		for x := 0; x < front_buffer.width; {
-			cell_offset := line_offset + x
-			back := &back_buffer.cells[cell_offset]
-			front := &front_buffer.cells[cell_offset]
-			if back.Ch < ' ' {
-				back.Ch = ' '
-			}
-			w := runewidth.RuneWidth(back.Ch)
-			if w == 0 || w == 2 && runewidth.IsAmbiguousWidth(back.Ch) {
-				w = 1
-			}
-			if *back == *front {
-				x += w
-				continue
-			}
-			*front = *back
-			send_attr(back.Fg, back.Bg)
-
-			if w == 2 && x == front_buffer.width-1 {
-				// there's not enough space for 2-cells rune,
-				// let's just put a space in there
-				send_char(x, y, ' ')
-			} else {
-				send_char(x, y, back.Ch)
-				if w == 2 {
-					next := cell_offset + 1
-					front_buffer.cells[next] = Cell{
-						Ch: 0,
-						Fg: back.Fg,
-						Bg: back.Bg,
-					}
-				}
-			}
-			x += w
-		}
-	}
-	if !is_cursor_hidden(cursor_x, cursor_y) {
-		write_cursor(cursor_x, cursor_y)
-	}
-	return flush()
-}
-
-// Sets the position of the cursor. See also HideCursor().
-func SetCursor(x, y int) {
-	if is_cursor_hidden(cursor_x, cursor_y) && !is_cursor_hidden(x, y) {
-		outbuf.WriteString(funcs[t_show_cursor])
-	}
-
-	if !is_cursor_hidden(cursor_x, cursor_y) && is_cursor_hidden(x, y) {
-		outbuf.WriteString(funcs[t_hide_cursor])
-	}
-
-	cursor_x, cursor_y = x, y
-	if !is_cursor_hidden(cursor_x, cursor_y) {
-		write_cursor(cursor_x, cursor_y)
-	}
-}
-
-// The shortcut for SetCursor(-1, -1).
-func HideCursor() {
-	SetCursor(cursor_hidden, cursor_hidden)
-}
-
-// Changes cell's parameters in the internal back buffer at the specified
-// position.
-func SetCell(x, y int, ch rune, fg, bg Attribute) {
-	if x < 0 || x >= back_buffer.width {
-		return
-	}
-	if y < 0 || y >= back_buffer.height {
-		return
-	}
-
-	back_buffer.cells[y*back_buffer.width+x] = Cell{ch, fg, bg}
-}
-
-// Returns a slice into the termbox's back buffer. You can get its dimensions
-// using 'Size' function. The slice remains valid as long as no 'Clear' or
-// 'Flush' function calls were made after call to this function.
-func CellBuffer() []Cell {
-	return back_buffer.cells
-}
-
-// After getting a raw event from PollRawEvent function call, you can parse it
-// again into an ordinary one using termbox logic. That is parse an event as
-// termbox would do it. Returned event in addition to usual Event struct fields
-// sets N field to the amount of bytes used within 'data' slice. If the length
-// of 'data' slice is zero or event cannot be parsed for some other reason, the
-// function will return a special event type: EventNone.
-//
-// IMPORTANT: EventNone may contain a non-zero N, which means you should skip
-// these bytes, because termbox cannot recognize them.
-//
-// NOTE: This API is experimental and may change in future.
-func ParseEvent(data []byte) Event {
-	event := Event{Type: EventKey}
-	status := extract_event(data, &event, false)
-	if status != event_extracted {
-		return Event{Type: EventNone, N: event.N}
-	}
-	return event
-}
-
-// Wait for an event and return it. This is a blocking function call. Instead
-// of EventKey and EventMouse it returns EventRaw events. Raw event is written
-// into `data` slice and Event's N field is set to the amount of bytes written.
-// The minimum required length of the 'data' slice is 1. This requirement may
-// vary on different platforms.
-//
-// NOTE: This API is experimental and may change in future.
-func PollRawEvent(data []byte) Event {
-	if len(data) == 0 {
-		panic("len(data) >= 1 is a requirement")
-	}
-
-	var event Event
-	if extract_raw_event(data, &event) {
-		return event
-	}
-
-	for {
-		select {
-		case ev := <-input_comm:
-			if ev.err != nil {
-				return Event{Type: EventError, Err: ev.err}
-			}
-
-			inbuf = append(inbuf, ev.data...)
-			input_comm <- ev
-			if extract_raw_event(data, &event) {
-				return event
-			}
-		case <-interrupt_comm:
-			event.Type = EventInterrupt
-			return event
-
-		case <-sigwinch:
-			event.Type = EventResize
-			event.Width, event.Height = get_term_size(out.Fd())
-			return event
-		}
-	}
-}
-
-// Wait for an event and return it. This is a blocking function call.
-func PollEvent() Event {
-	// Constant governing macOS specific behavior. See https://github.com/nsf/termbox-go/issues/132
-	// This is an arbitrary delay which hopefully will be enough time for any lagging
-	// partial escape sequences to come through.
-	const esc_wait_delay = 100 * time.Millisecond
-
-	var event Event
-	var esc_wait_timer *time.Timer
-	var esc_timeout <-chan time.Time
-
-	// try to extract event from input buffer, return on success
-	event.Type = EventKey
-	status := extract_event(inbuf, &event, true)
-	if event.N != 0 {
-		copy(inbuf, inbuf[event.N:])
-		inbuf = inbuf[:len(inbuf)-event.N]
-	}
-	if status == event_extracted {
-		return event
-	} else if status == esc_wait {
-		esc_wait_timer = time.NewTimer(esc_wait_delay)
-		esc_timeout = esc_wait_timer.C
-	}
-
-	for {
-		select {
-		case ev := <-input_comm:
-			if esc_wait_timer != nil {
-				if !esc_wait_timer.Stop() {
-					<-esc_wait_timer.C
-				}
-				esc_wait_timer = nil
-			}
-
-			if ev.err != nil {
-				return Event{Type: EventError, Err: ev.err}
-			}
-
-			inbuf = append(inbuf, ev.data...)
-			input_comm <- ev
-			status := extract_event(inbuf, &event, true)
-			if event.N != 0 {
-				copy(inbuf, inbuf[event.N:])
-				inbuf = inbuf[:len(inbuf)-event.N]
-			}
-			if status == event_extracted {
-				return event
-			} else if status == esc_wait {
-				esc_wait_timer = time.NewTimer(esc_wait_delay)
-				esc_timeout = esc_wait_timer.C
-			}
-		case <-esc_timeout:
-			esc_wait_timer = nil
-
-			status := extract_event(inbuf, &event, false)
-			if event.N != 0 {
-				copy(inbuf, inbuf[event.N:])
-				inbuf = inbuf[:len(inbuf)-event.N]
-			}
-			if status == event_extracted {
-				return event
-			}
-		case <-interrupt_comm:
-			event.Type = EventInterrupt
-			return event
-
-		case <-sigwinch:
-			event.Type = EventResize
-			event.Width, event.Height = get_term_size(out.Fd())
-			return event
-		}
-	}
-}
-
-// Returns the size of the internal back buffer (which is mostly the same as
-// terminal's window size in characters). But it doesn't always match the size
-// of the terminal window, after the terminal size has changed, the internal
-// back buffer will get in sync only after Clear or Flush function calls.
-func Size() (width int, height int) {
-	return termw, termh
-}
-
-// Clears the internal back buffer.
-func Clear(fg, bg Attribute) error {
-	foreground, background = fg, bg
-	err := update_size_maybe()
-	back_buffer.clear()
-	return err
-}
-
-// Sets termbox input mode. Termbox has two input modes:
-//
-// 1. Esc input mode. When ESC sequence is in the buffer and it doesn't match
-// any known sequence. ESC means KeyEsc. This is the default input mode.
-//
-// 2. Alt input mode. When ESC sequence is in the buffer and it doesn't match
-// any known sequence. ESC enables ModAlt modifier for the next keyboard event.
-//
-// Both input modes can be OR'ed with Mouse mode. Setting Mouse mode bit up will
-// enable mouse button press/release and drag events.
-//
-// If 'mode' is InputCurrent, returns the current input mode. See also Input*
-// constants.
-func SetInputMode(mode InputMode) InputMode {
-	if mode == InputCurrent {
-		return input_mode
-	}
-	if mode&(InputEsc|InputAlt) == 0 {
-		mode |= InputEsc
-	}
-	if mode&(InputEsc|InputAlt) == InputEsc|InputAlt {
-		mode &^= InputAlt
-	}
-	if mode&InputMouse != 0 {
-		out.WriteString(funcs[t_enter_mouse])
-	} else {
-		out.WriteString(funcs[t_exit_mouse])
-	}
-
-	input_mode = mode
-	return input_mode
-}
-
-// Sets the termbox output mode. Termbox has four output options:
-//
-// 1. OutputNormal => [1..8]
-//    This mode provides 8 different colors:
-//        black, red, green, yellow, blue, magenta, cyan, white
-//    Shortcut: ColorBlack, ColorRed, ...
-//    Attributes: AttrBold, AttrUnderline, AttrReverse
-//
-//    Example usage:
-//        SetCell(x, y, '@', ColorBlack | AttrBold, ColorRed);
-//
-// 2. Output256 => [1..256]
-//    In this mode you can leverage the 256 terminal mode:
-//    0x01 - 0x08: the 8 colors as in OutputNormal
-//    0x09 - 0x10: Color* | AttrBold
-//    0x11 - 0xe8: 216 different colors
-//    0xe9 - 0x1ff: 24 different shades of grey
-//
-//    Example usage:
-//        SetCell(x, y, '@', 184, 240);
-//        SetCell(x, y, '@', 0xb8, 0xf0);
-//
-// 3. Output216 => [1..216]
-//    This mode supports the 3rd range of the 256 mode only.
-//    But you don't need to provide an offset.
-//
-// 4. OutputGrayscale => [1..26]
-//    This mode supports the 4th range of the 256 mode
-//    and black and white colors from 3th range of the 256 mode
-//    But you don't need to provide an offset.
-//
-// In all modes, 0x00 represents the default color.
-//
-// `go run _demos/output.go` to see its impact on your terminal.
-//
-// If 'mode' is OutputCurrent, it returns the current output mode.
-//
-// Note that this may return a different OutputMode than the one requested,
-// as the requested mode may not be available on the target platform.
-func SetOutputMode(mode OutputMode) OutputMode {
-	if mode == OutputCurrent {
-		return output_mode
-	}
-
-	output_mode = mode
-	return output_mode
-}
-
-// Sync comes handy when something causes desync between termbox's understanding
-// of a terminal buffer and the reality. Such as a third party process. Sync
-// forces a complete resync between the termbox and a terminal, it may not be
-// visually pretty though.
-func Sync() error {
-	front_buffer.clear()
-	err := send_clear()
-	if err != nil {
-		return err
-	}
-
-	return Flush()
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/api_common.go b/vendor/github.com/miguelmota/termbox-go/api_common.go
deleted file mode 100644
index 5ca1371..0000000
--- a/vendor/github.com/miguelmota/termbox-go/api_common.go
+++ /dev/null
@@ -1,187 +0,0 @@
-// termbox is a library for creating cross-platform text-based interfaces
-package termbox
-
-// public API, common OS agnostic part
-
-type (
-	InputMode  int
-	OutputMode int
-	EventType  uint8
-	Modifier   uint8
-	Key        uint16
-	Attribute  uint16
-)
-
-// This type represents a termbox event. The 'Mod', 'Key' and 'Ch' fields are
-// valid if 'Type' is EventKey. The 'Width' and 'Height' fields are valid if
-// 'Type' is EventResize. The 'Err' field is valid if 'Type' is EventError.
-type Event struct {
-	Type   EventType // one of Event* constants
-	Mod    Modifier  // one of Mod* constants or 0
-	Key    Key       // one of Key* constants, invalid if 'Ch' is not 0
-	Ch     rune      // a unicode character
-	Width  int       // width of the screen
-	Height int       // height of the screen
-	Err    error     // error in case if input failed
-	MouseX int       // x coord of mouse
-	MouseY int       // y coord of mouse
-	N      int       // number of bytes written when getting a raw event
-}
-
-// A cell, single conceptual entity on the screen. The screen is basically a 2d
-// array of cells. 'Ch' is a unicode character, 'Fg' and 'Bg' are foreground
-// and background attributes respectively.
-type Cell struct {
-	Ch rune
-	Fg Attribute
-	Bg Attribute
-}
-
-// To know if termbox has been initialized or not
-var (
-	IsInit bool = false
-)
-
-// Key constants, see Event.Key field.
-const (
-	KeyF1 Key = 0xFFFF - iota
-	KeyF2
-	KeyF3
-	KeyF4
-	KeyF5
-	KeyF6
-	KeyF7
-	KeyF8
-	KeyF9
-	KeyF10
-	KeyF11
-	KeyF12
-	KeyInsert
-	KeyDelete
-	KeyHome
-	KeyEnd
-	KeyPgup
-	KeyPgdn
-	KeyArrowUp
-	KeyArrowDown
-	KeyArrowLeft
-	KeyArrowRight
-	key_min // see terminfo
-	MouseLeft
-	MouseMiddle
-	MouseRight
-	MouseRelease
-	MouseWheelUp
-	MouseWheelDown
-)
-
-const (
-	KeyCtrlTilde      Key = 0x00
-	KeyCtrl2          Key = 0x00
-	KeyCtrlSpace      Key = 0x00
-	KeyCtrlA          Key = 0x01
-	KeyCtrlB          Key = 0x02
-	KeyCtrlC          Key = 0x03
-	KeyCtrlD          Key = 0x04
-	KeyCtrlE          Key = 0x05
-	KeyCtrlF          Key = 0x06
-	KeyCtrlG          Key = 0x07
-	KeyBackspace      Key = 0x08
-	KeyCtrlH          Key = 0x08
-	KeyTab            Key = 0x09
-	KeyCtrlI          Key = 0x09
-	KeyCtrlJ          Key = 0x0A
-	KeyCtrlK          Key = 0x0B
-	KeyCtrlL          Key = 0x0C
-	KeyEnter          Key = 0x0D
-	KeyCtrlM          Key = 0x0D
-	KeyCtrlN          Key = 0x0E
-	KeyCtrlO          Key = 0x0F
-	KeyCtrlP          Key = 0x10
-	KeyCtrlQ          Key = 0x11
-	KeyCtrlR          Key = 0x12
-	KeyCtrlS          Key = 0x13
-	KeyCtrlT          Key = 0x14
-	KeyCtrlU          Key = 0x15
-	KeyCtrlV          Key = 0x16
-	KeyCtrlW          Key = 0x17
-	KeyCtrlX          Key = 0x18
-	KeyCtrlY          Key = 0x19
-	KeyCtrlZ          Key = 0x1A
-	KeyEsc            Key = 0x1B
-	KeyCtrlLsqBracket Key = 0x1B
-	KeyCtrl3          Key = 0x1B
-	KeyCtrl4          Key = 0x1C
-	KeyCtrlBackslash  Key = 0x1C
-	KeyCtrl5          Key = 0x1D
-	KeyCtrlRsqBracket Key = 0x1D
-	KeyCtrl6          Key = 0x1E
-	KeyCtrl7          Key = 0x1F
-	KeyCtrlSlash      Key = 0x1F
-	KeyCtrlUnderscore Key = 0x1F
-	KeySpace          Key = 0x20
-	KeyBackspace2     Key = 0x7F
-	KeyCtrl8          Key = 0x7F
-)
-
-// Alt modifier constant, see Event.Mod field and SetInputMode function.
-const (
-	ModAlt Modifier = 1 << iota
-	ModMotion
-)
-
-// Cell colors, you can combine a color with multiple attributes using bitwise
-// OR ('|').
-const (
-	ColorDefault Attribute = iota
-	ColorBlack
-	ColorRed
-	ColorGreen
-	ColorYellow
-	ColorBlue
-	ColorMagenta
-	ColorCyan
-	ColorWhite
-)
-
-// Cell attributes, it is possible to use multiple attributes by combining them
-// using bitwise OR ('|'). Although, colors cannot be combined. But you can
-// combine attributes and a single color.
-//
-// It's worth mentioning that some platforms don't support certain attributes.
-// For example windows console doesn't support AttrUnderline. And on some
-// terminals applying AttrBold to background may result in blinking text. Use
-// them with caution and test your code on various terminals.
-const (
-	AttrBold Attribute = 1 << (iota + 9)
-	AttrUnderline
-	AttrReverse
-)
-
-// Input mode. See SetInputMode function.
-const (
-	InputEsc InputMode = 1 << iota
-	InputAlt
-	InputMouse
-	InputCurrent InputMode = 0
-)
-
-// Output mode. See SetOutputMode function.
-const (
-	OutputCurrent OutputMode = iota
-	OutputNormal
-	Output256
-	Output216
-	OutputGrayscale
-)
-
-// Event type. See Event.Type field.
-const (
-	EventKey EventType = iota
-	EventResize
-	EventMouse
-	EventError
-	EventInterrupt
-	EventRaw
-	EventNone
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/api_windows.go b/vendor/github.com/miguelmota/termbox-go/api_windows.go
deleted file mode 100644
index 373e6c7..0000000
--- a/vendor/github.com/miguelmota/termbox-go/api_windows.go
+++ /dev/null
@@ -1,257 +0,0 @@
-package termbox
-
-import (
-	"syscall"
-
-	"github.com/mattn/go-runewidth"
-)
-
-// public API
-
-// Initializes termbox library. This function should be called before any other functions.
-// After successful initialization, the library must be finalized using 'Close' function.
-//
-// Example usage:
-//      err := termbox.Init()
-//      if err != nil {
-//              panic(err)
-//      }
-//      defer termbox.Close()
-func Init() error {
-	var err error
-
-	interrupt, err = create_event()
-	if err != nil {
-		return err
-	}
-
-	in, err = syscall.Open("CONIN$", syscall.O_RDWR, 0)
-	if err != nil {
-		return err
-	}
-	out, err = syscall.Open("CONOUT$", syscall.O_RDWR, 0)
-	if err != nil {
-		return err
-	}
-
-	err = get_console_mode(in, &orig_mode)
-	if err != nil {
-		return err
-	}
-
-	err = set_console_mode(in, enable_window_input)
-	if err != nil {
-		return err
-	}
-
-	orig_size, orig_window = get_term_size(out)
-	win_size := get_win_size(out)
-
-	err = set_console_screen_buffer_size(out, win_size)
-	if err != nil {
-		return err
-	}
-
-	err = fix_win_size(out, win_size)
-	if err != nil {
-		return err
-	}
-
-	err = get_console_cursor_info(out, &orig_cursor_info)
-	if err != nil {
-		return err
-	}
-
-	show_cursor(false)
-	term_size, _ = get_term_size(out)
-	back_buffer.init(int(term_size.x), int(term_size.y))
-	front_buffer.init(int(term_size.x), int(term_size.y))
-	back_buffer.clear()
-	front_buffer.clear()
-	clear()
-
-	diffbuf = make([]diff_msg, 0, 32)
-
-	go input_event_producer()
-	IsInit = true
-	return nil
-}
-
-// Finalizes termbox library, should be called after successful initialization
-// when termbox's functionality isn't required anymore.
-func Close() {
-	// we ignore errors here, because we can't really do anything about them
-	Clear(0, 0)
-	Flush()
-
-	// stop event producer
-	cancel_comm <- true
-	set_event(interrupt)
-	select {
-	case <-input_comm:
-	default:
-	}
-	<-cancel_done_comm
-
-	set_console_screen_buffer_size(out, orig_size)
-	set_console_window_info(out, &orig_window)
-	set_console_cursor_info(out, &orig_cursor_info)
-	set_console_cursor_position(out, coord{})
-	set_console_mode(in, orig_mode)
-	syscall.Close(in)
-	syscall.Close(out)
-	syscall.Close(interrupt)
-	IsInit = false
-}
-
-// Interrupt an in-progress call to PollEvent by causing it to return
-// EventInterrupt.  Note that this function will block until the PollEvent
-// function has successfully been interrupted.
-func Interrupt() {
-	interrupt_comm <- struct{}{}
-}
-
-// Synchronizes the internal back buffer with the terminal.
-func Flush() error {
-	update_size_maybe()
-	prepare_diff_messages()
-	for _, diff := range diffbuf {
-		chars := []char_info{}
-		for _, char := range diff.chars {
-			chars = append(chars, char)
-			if runewidth.RuneWidth(rune(char.char)) > 1 {
-				chars = append(chars, char_info{
-					char: ' ',
-					attr: char.attr,
-				})
-			}
-		}
-		r := small_rect{
-			left:   0,
-			top:    diff.pos,
-			right:  term_size.x - 1,
-			bottom: diff.pos + diff.lines - 1,
-		}
-		write_console_output(out, chars, r)
-	}
-	if !is_cursor_hidden(cursor_x, cursor_y) {
-		move_cursor(cursor_x, cursor_y)
-	}
-	return nil
-}
-
-// Sets the position of the cursor. See also HideCursor().
-func SetCursor(x, y int) {
-	if is_cursor_hidden(cursor_x, cursor_y) && !is_cursor_hidden(x, y) {
-		show_cursor(true)
-	}
-
-	if !is_cursor_hidden(cursor_x, cursor_y) && is_cursor_hidden(x, y) {
-		show_cursor(false)
-	}
-
-	cursor_x, cursor_y = x, y
-	if !is_cursor_hidden(cursor_x, cursor_y) {
-		move_cursor(cursor_x, cursor_y)
-	}
-}
-
-// The shortcut for SetCursor(-1, -1).
-func HideCursor() {
-	SetCursor(cursor_hidden, cursor_hidden)
-}
-
-// Changes cell's parameters in the internal back buffer at the specified
-// position.
-func SetCell(x, y int, ch rune, fg, bg Attribute) {
-	if x < 0 || x >= back_buffer.width {
-		return
-	}
-	if y < 0 || y >= back_buffer.height {
-		return
-	}
-
-	back_buffer.cells[y*back_buffer.width+x] = Cell{ch, fg, bg}
-}
-
-// Returns a slice into the termbox's back buffer. You can get its dimensions
-// using 'Size' function. The slice remains valid as long as no 'Clear' or
-// 'Flush' function calls were made after call to this function.
-func CellBuffer() []Cell {
-	return back_buffer.cells
-}
-
-// Wait for an event and return it. This is a blocking function call.
-func PollEvent() Event {
-	select {
-	case ev := <-input_comm:
-		return ev
-	case <-interrupt_comm:
-		return Event{Type: EventInterrupt}
-	}
-}
-
-// Returns the size of the internal back buffer (which is mostly the same as
-// console's window size in characters). But it doesn't always match the size
-// of the console window, after the console size has changed, the internal back
-// buffer will get in sync only after Clear or Flush function calls.
-func Size() (int, int) {
-	return int(term_size.x), int(term_size.y)
-}
-
-// Clears the internal back buffer.
-func Clear(fg, bg Attribute) error {
-	foreground, background = fg, bg
-	update_size_maybe()
-	back_buffer.clear()
-	return nil
-}
-
-// Sets termbox input mode. Termbox has two input modes:
-//
-// 1. Esc input mode. When ESC sequence is in the buffer and it doesn't match
-// any known sequence. ESC means KeyEsc. This is the default input mode.
-//
-// 2. Alt input mode. When ESC sequence is in the buffer and it doesn't match
-// any known sequence. ESC enables ModAlt modifier for the next keyboard event.
-//
-// Both input modes can be OR'ed with Mouse mode. Setting Mouse mode bit up will
-// enable mouse button press/release and drag events.
-//
-// If 'mode' is InputCurrent, returns the current input mode. See also Input*
-// constants.
-func SetInputMode(mode InputMode) InputMode {
-	if mode == InputCurrent {
-		return input_mode
-	}
-	if mode&InputMouse != 0 {
-		err := set_console_mode(in, enable_window_input|enable_mouse_input|enable_extended_flags)
-		if err != nil {
-			panic(err)
-		}
-	} else {
-		err := set_console_mode(in, enable_window_input)
-		if err != nil {
-			panic(err)
-		}
-	}
-
-	input_mode = mode
-	return input_mode
-}
-
-// Sets the termbox output mode.
-//
-// Windows console does not support extra colour modes,
-// so this will always set and return OutputNormal.
-func SetOutputMode(mode OutputMode) OutputMode {
-	return OutputNormal
-}
-
-// Sync comes handy when something causes desync between termbox's understanding
-// of a terminal buffer and the reality. Such as a third party process. Sync
-// forces a complete resync between the termbox and a terminal, it may not be
-// visually pretty though. At the moment on Windows it does nothing.
-func Sync() error {
-	return nil
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/collect_terminfo.py b/vendor/github.com/miguelmota/termbox-go/collect_terminfo.py
deleted file mode 100644
index 5e50975..0000000
--- a/vendor/github.com/miguelmota/termbox-go/collect_terminfo.py
+++ /dev/null
@@ -1,110 +0,0 @@
-#!/usr/bin/env python
-
-import sys, os, subprocess
-
-def escaped(s):
-	return repr(s)[1:-1]
-
-def tput(term, name):
-	try:
-		return subprocess.check_output(['tput', '-T%s' % term, name]).decode()
-	except subprocess.CalledProcessError as e:
-		return e.output.decode()
-
-
-def w(s):
-	if s == None:
-		return
-	sys.stdout.write(s)
-
-terminals = {
-	'xterm' : 'xterm',
-	'rxvt-256color' : 'rxvt_256color',
-	'rxvt-unicode' : 'rxvt_unicode',
-	'linux' : 'linux',
-	'Eterm' : 'eterm',
-	'screen' : 'screen'
-}
-
-keys = [
-	"F1",		"kf1",
-	"F2",		"kf2",
-	"F3",		"kf3",
-	"F4",		"kf4",
-	"F5",		"kf5",
-	"F6",		"kf6",
-	"F7",		"kf7",
-	"F8",		"kf8",
-	"F9",		"kf9",
-	"F10",		"kf10",
-	"F11",		"kf11",
-	"F12",		"kf12",
-	"INSERT",	"kich1",
-	"DELETE",	"kdch1",
-	"HOME",		"khome",
-	"END",		"kend",
-	"PGUP",		"kpp",
-	"PGDN",		"knp",
-	"KEY_UP",	"kcuu1",
-	"KEY_DOWN",	"kcud1",
-	"KEY_LEFT",	"kcub1",
-	"KEY_RIGHT",	"kcuf1"
-]
-
-funcs = [
-	"T_ENTER_CA",		"smcup",
-	"T_EXIT_CA",		"rmcup",
-	"T_SHOW_CURSOR",	"cnorm",
-	"T_HIDE_CURSOR",	"civis",
-	"T_CLEAR_SCREEN",	"clear",
-	"T_SGR0",		"sgr0",
-	"T_UNDERLINE",		"smul",
-	"T_BOLD",		"bold",
-	"T_BLINK",		"blink",
-	"T_REVERSE",            "rev",
-	"T_ENTER_KEYPAD",	"smkx",
-	"T_EXIT_KEYPAD",	"rmkx"
-]
-
-def iter_pairs(iterable):
-	iterable = iter(iterable)
-	while True:
-		yield (next(iterable), next(iterable))
-
-def do_term(term, nick):
-	w("// %s\n" % term)
-	w("var %s_keys = []string{\n\t" % nick)
-	for k, v in iter_pairs(keys):
-		w('"')
-		w(escaped(tput(term, v)))
-		w('",')
-	w("\n}\n")
-	w("var %s_funcs = []string{\n\t" % nick)
-	for k,v in iter_pairs(funcs):
-		w('"')
-		if v == "sgr":
-			w("\\033[3%d;4%dm")
-		elif v == "cup":
-			w("\\033[%d;%dH")
-		else:
-			w(escaped(tput(term, v)))
-		w('", ')
-	w("\n}\n\n")
-
-def do_terms(d):
-	w("var terms = []struct {\n")
-	w("\tname  string\n")
-	w("\tkeys  []string\n")
-	w("\tfuncs []string\n")
-	w("}{\n")
-	for k, v in d.items():
-		w('\t{"%s", %s_keys, %s_funcs},\n' % (k, v, v))
-	w("}\n\n")
-
-w("// +build !windows\n\npackage termbox\n\n")
-
-for k,v in terminals.items():
-	do_term(k, v)
-
-do_terms(terminals)
-
diff --git a/vendor/github.com/miguelmota/termbox-go/escwait.go b/vendor/github.com/miguelmota/termbox-go/escwait.go
deleted file mode 100644
index b7bbb89..0000000
--- a/vendor/github.com/miguelmota/termbox-go/escwait.go
+++ /dev/null
@@ -1,11 +0,0 @@
-// +build !darwin
-
-package termbox
-
-// On all systems other than macOS, disable behavior which will wait before
-// deciding that the escape key was pressed, to account for partially send
-// escape sequences, especially with regard to lengthy mouse sequences.
-// See https://github.com/nsf/termbox-go/issues/132
-func enable_wait_for_escape_sequence() bool {
-	return false
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/escwait_darwin.go b/vendor/github.com/miguelmota/termbox-go/escwait_darwin.go
deleted file mode 100644
index dde69b6..0000000
--- a/vendor/github.com/miguelmota/termbox-go/escwait_darwin.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package termbox
-
-// On macOS, enable behavior which will wait before deciding that the escape
-// key was pressed, to account for partially send escape sequences, especially
-// with regard to lengthy mouse sequences.
-// See https://github.com/nsf/termbox-go/issues/132
-func enable_wait_for_escape_sequence() bool {
-	return true
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_darwin.go b/vendor/github.com/miguelmota/termbox-go/syscalls_darwin.go
deleted file mode 100644
index 25b78f7..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_darwin.go
+++ /dev/null
@@ -1,41 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-// +build !amd64
-
-package termbox
-
-type syscall_Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed uint32
-	Ospeed uint32
-}
-
-const (
-	syscall_IGNBRK = 0x1
-	syscall_BRKINT = 0x2
-	syscall_PARMRK = 0x8
-	syscall_ISTRIP = 0x20
-	syscall_INLCR  = 0x40
-	syscall_IGNCR  = 0x80
-	syscall_ICRNL  = 0x100
-	syscall_IXON   = 0x200
-	syscall_OPOST  = 0x1
-	syscall_ECHO   = 0x8
-	syscall_ECHONL = 0x10
-	syscall_ICANON = 0x100
-	syscall_ISIG   = 0x80
-	syscall_IEXTEN = 0x400
-	syscall_CSIZE  = 0x300
-	syscall_PARENB = 0x1000
-	syscall_CS8    = 0x300
-	syscall_VMIN   = 0x10
-	syscall_VTIME  = 0x11
-
-	syscall_TCGETS = 0x402c7413
-	syscall_TCSETS = 0x802c7414
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_darwin_amd64.go b/vendor/github.com/miguelmota/termbox-go/syscalls_darwin_amd64.go
deleted file mode 100644
index 11f25be..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_darwin_amd64.go
+++ /dev/null
@@ -1,40 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-package termbox
-
-type syscall_Termios struct {
-	Iflag     uint64
-	Oflag     uint64
-	Cflag     uint64
-	Lflag     uint64
-	Cc        [20]uint8
-	Pad_cgo_0 [4]byte
-	Ispeed    uint64
-	Ospeed    uint64
-}
-
-const (
-	syscall_IGNBRK = 0x1
-	syscall_BRKINT = 0x2
-	syscall_PARMRK = 0x8
-	syscall_ISTRIP = 0x20
-	syscall_INLCR  = 0x40
-	syscall_IGNCR  = 0x80
-	syscall_ICRNL  = 0x100
-	syscall_IXON   = 0x200
-	syscall_OPOST  = 0x1
-	syscall_ECHO   = 0x8
-	syscall_ECHONL = 0x10
-	syscall_ICANON = 0x100
-	syscall_ISIG   = 0x80
-	syscall_IEXTEN = 0x400
-	syscall_CSIZE  = 0x300
-	syscall_PARENB = 0x1000
-	syscall_CS8    = 0x300
-	syscall_VMIN   = 0x10
-	syscall_VTIME  = 0x11
-
-	syscall_TCGETS = 0x40487413
-	syscall_TCSETS = 0x80487414
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_dragonfly.go b/vendor/github.com/miguelmota/termbox-go/syscalls_dragonfly.go
deleted file mode 100644
index e03624e..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_dragonfly.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-package termbox
-
-type syscall_Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed uint32
-	Ospeed uint32
-}
-
-const (
-	syscall_IGNBRK = 0x1
-	syscall_BRKINT = 0x2
-	syscall_PARMRK = 0x8
-	syscall_ISTRIP = 0x20
-	syscall_INLCR  = 0x40
-	syscall_IGNCR  = 0x80
-	syscall_ICRNL  = 0x100
-	syscall_IXON   = 0x200
-	syscall_OPOST  = 0x1
-	syscall_ECHO   = 0x8
-	syscall_ECHONL = 0x10
-	syscall_ICANON = 0x100
-	syscall_ISIG   = 0x80
-	syscall_IEXTEN = 0x400
-	syscall_CSIZE  = 0x300
-	syscall_PARENB = 0x1000
-	syscall_CS8    = 0x300
-	syscall_VMIN   = 0x10
-	syscall_VTIME  = 0x11
-
-	syscall_TCGETS = 0x402c7413
-	syscall_TCSETS = 0x802c7414
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_freebsd.go b/vendor/github.com/miguelmota/termbox-go/syscalls_freebsd.go
deleted file mode 100644
index e03624e..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_freebsd.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-package termbox
-
-type syscall_Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed uint32
-	Ospeed uint32
-}
-
-const (
-	syscall_IGNBRK = 0x1
-	syscall_BRKINT = 0x2
-	syscall_PARMRK = 0x8
-	syscall_ISTRIP = 0x20
-	syscall_INLCR  = 0x40
-	syscall_IGNCR  = 0x80
-	syscall_ICRNL  = 0x100
-	syscall_IXON   = 0x200
-	syscall_OPOST  = 0x1
-	syscall_ECHO   = 0x8
-	syscall_ECHONL = 0x10
-	syscall_ICANON = 0x100
-	syscall_ISIG   = 0x80
-	syscall_IEXTEN = 0x400
-	syscall_CSIZE  = 0x300
-	syscall_PARENB = 0x1000
-	syscall_CS8    = 0x300
-	syscall_VMIN   = 0x10
-	syscall_VTIME  = 0x11
-
-	syscall_TCGETS = 0x402c7413
-	syscall_TCSETS = 0x802c7414
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_linux.go b/vendor/github.com/miguelmota/termbox-go/syscalls_linux.go
deleted file mode 100644
index b88960d..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_linux.go
+++ /dev/null
@@ -1,33 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-package termbox
-
-import "syscall"
-
-type syscall_Termios syscall.Termios
-
-const (
-	syscall_IGNBRK = syscall.IGNBRK
-	syscall_BRKINT = syscall.BRKINT
-	syscall_PARMRK = syscall.PARMRK
-	syscall_ISTRIP = syscall.ISTRIP
-	syscall_INLCR  = syscall.INLCR
-	syscall_IGNCR  = syscall.IGNCR
-	syscall_ICRNL  = syscall.ICRNL
-	syscall_IXON   = syscall.IXON
-	syscall_OPOST  = syscall.OPOST
-	syscall_ECHO   = syscall.ECHO
-	syscall_ECHONL = syscall.ECHONL
-	syscall_ICANON = syscall.ICANON
-	syscall_ISIG   = syscall.ISIG
-	syscall_IEXTEN = syscall.IEXTEN
-	syscall_CSIZE  = syscall.CSIZE
-	syscall_PARENB = syscall.PARENB
-	syscall_CS8    = syscall.CS8
-	syscall_VMIN   = syscall.VMIN
-	syscall_VTIME  = syscall.VTIME
-
-	syscall_TCGETS = syscall.TCGETS
-	syscall_TCSETS = syscall.TCSETS
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_netbsd.go b/vendor/github.com/miguelmota/termbox-go/syscalls_netbsd.go
deleted file mode 100644
index 49a3355..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_netbsd.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-package termbox
-
-type syscall_Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed int32
-	Ospeed int32
-}
-
-const (
-	syscall_IGNBRK = 0x1
-	syscall_BRKINT = 0x2
-	syscall_PARMRK = 0x8
-	syscall_ISTRIP = 0x20
-	syscall_INLCR  = 0x40
-	syscall_IGNCR  = 0x80
-	syscall_ICRNL  = 0x100
-	syscall_IXON   = 0x200
-	syscall_OPOST  = 0x1
-	syscall_ECHO   = 0x8
-	syscall_ECHONL = 0x10
-	syscall_ICANON = 0x100
-	syscall_ISIG   = 0x80
-	syscall_IEXTEN = 0x400
-	syscall_CSIZE  = 0x300
-	syscall_PARENB = 0x1000
-	syscall_CS8    = 0x300
-	syscall_VMIN   = 0x10
-	syscall_VTIME  = 0x11
-
-	syscall_TCGETS = 0x402c7413
-	syscall_TCSETS = 0x802c7414
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_openbsd.go b/vendor/github.com/miguelmota/termbox-go/syscalls_openbsd.go
deleted file mode 100644
index 49a3355..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_openbsd.go
+++ /dev/null
@@ -1,39 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs syscalls.go
-
-package termbox
-
-type syscall_Termios struct {
-	Iflag  uint32
-	Oflag  uint32
-	Cflag  uint32
-	Lflag  uint32
-	Cc     [20]uint8
-	Ispeed int32
-	Ospeed int32
-}
-
-const (
-	syscall_IGNBRK = 0x1
-	syscall_BRKINT = 0x2
-	syscall_PARMRK = 0x8
-	syscall_ISTRIP = 0x20
-	syscall_INLCR  = 0x40
-	syscall_IGNCR  = 0x80
-	syscall_ICRNL  = 0x100
-	syscall_IXON   = 0x200
-	syscall_OPOST  = 0x1
-	syscall_ECHO   = 0x8
-	syscall_ECHONL = 0x10
-	syscall_ICANON = 0x100
-	syscall_ISIG   = 0x80
-	syscall_IEXTEN = 0x400
-	syscall_CSIZE  = 0x300
-	syscall_PARENB = 0x1000
-	syscall_CS8    = 0x300
-	syscall_VMIN   = 0x10
-	syscall_VTIME  = 0x11
-
-	syscall_TCGETS = 0x402c7413
-	syscall_TCSETS = 0x802c7414
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/syscalls_windows.go b/vendor/github.com/miguelmota/termbox-go/syscalls_windows.go
deleted file mode 100644
index 472d002..0000000
--- a/vendor/github.com/miguelmota/termbox-go/syscalls_windows.go
+++ /dev/null
@@ -1,61 +0,0 @@
-// Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs -- -DUNICODE syscalls.go
-
-package termbox
-
-const (
-	foreground_blue          = 0x1
-	foreground_green         = 0x2
-	foreground_red           = 0x4
-	foreground_intensity     = 0x8
-	background_blue          = 0x10
-	background_green         = 0x20
-	background_red           = 0x40
-	background_intensity     = 0x80
-	std_input_handle         = -0xa
-	std_output_handle        = -0xb
-	key_event                = 0x1
-	mouse_event              = 0x2
-	window_buffer_size_event = 0x4
-	enable_window_input      = 0x8
-	enable_mouse_input       = 0x10
-	enable_extended_flags    = 0x80
-
-	vk_f1          = 0x70
-	vk_f2          = 0x71
-	vk_f3          = 0x72
-	vk_f4          = 0x73
-	vk_f5          = 0x74
-	vk_f6          = 0x75
-	vk_f7          = 0x76
-	vk_f8          = 0x77
-	vk_f9          = 0x78
-	vk_f10         = 0x79
-	vk_f11         = 0x7a
-	vk_f12         = 0x7b
-	vk_insert      = 0x2d
-	vk_delete      = 0x2e
-	vk_home        = 0x24
-	vk_end         = 0x23
-	vk_pgup        = 0x21
-	vk_pgdn        = 0x22
-	vk_arrow_up    = 0x26
-	vk_arrow_down  = 0x28
-	vk_arrow_left  = 0x25
-	vk_arrow_right = 0x27
-	vk_backspace   = 0x8
-	vk_tab         = 0x9
-	vk_enter       = 0xd
-	vk_esc         = 0x1b
-	vk_space       = 0x20
-
-	left_alt_pressed   = 0x2
-	left_ctrl_pressed  = 0x8
-	right_alt_pressed  = 0x1
-	right_ctrl_pressed = 0x4
-	shift_pressed      = 0x10
-
-	generic_read            = 0x80000000
-	generic_write           = 0x40000000
-	console_textmode_buffer = 0x1
-)
diff --git a/vendor/github.com/miguelmota/termbox-go/termbox.go b/vendor/github.com/miguelmota/termbox-go/termbox.go
deleted file mode 100644
index fbe4c3d..0000000
--- a/vendor/github.com/miguelmota/termbox-go/termbox.go
+++ /dev/null
@@ -1,529 +0,0 @@
-// +build !windows
-
-package termbox
-
-import "unicode/utf8"
-import "bytes"
-import "syscall"
-import "unsafe"
-import "strings"
-import "strconv"
-import "os"
-import "io"
-
-// private API
-
-const (
-	t_enter_ca = iota
-	t_exit_ca
-	t_show_cursor
-	t_hide_cursor
-	t_clear_screen
-	t_sgr0
-	t_underline
-	t_bold
-	t_blink
-	t_reverse
-	t_enter_keypad
-	t_exit_keypad
-	t_enter_mouse
-	t_exit_mouse
-	t_max_funcs
-)
-
-const (
-	coord_invalid = -2
-	attr_invalid  = Attribute(0xFFFF)
-)
-
-type input_event struct {
-	data []byte
-	err  error
-}
-
-type extract_event_res int
-
-const (
-	event_not_extracted extract_event_res = iota
-	event_extracted
-	esc_wait
-)
-
-var (
-	// term specific sequences
-	keys  []string
-	funcs []string
-
-	// termbox inner state
-	orig_tios      syscall_Termios
-	back_buffer    cellbuf
-	front_buffer   cellbuf
-	termw          int
-	termh          int
-	input_mode     = InputEsc
-	output_mode    = OutputNormal
-	out            *os.File
-	in             int
-	lastfg         = attr_invalid
-	lastbg         = attr_invalid
-	lastx          = coord_invalid
-	lasty          = coord_invalid
-	cursor_x       = cursor_hidden
-	cursor_y       = cursor_hidden
-	foreground     = ColorDefault
-	background     = ColorDefault
-	inbuf          = make([]byte, 0, 64)
-	outbuf         bytes.Buffer
-	sigwinch       = make(chan os.Signal, 1)
-	sigio          = make(chan os.Signal, 1)
-	quit           = make(chan int)
-	input_comm     = make(chan input_event)
-	interrupt_comm = make(chan struct{})
-	intbuf         = make([]byte, 0, 16)
-
-	// grayscale indexes
-	grayscale = []Attribute{
-		0, 17, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244,
-		245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 232,
-	}
-)
-
-func write_cursor(x, y int) {
-	outbuf.WriteString("\033[")
-	outbuf.Write(strconv.AppendUint(intbuf, uint64(y+1), 10))
-	outbuf.WriteString(";")
-	outbuf.Write(strconv.AppendUint(intbuf, uint64(x+1), 10))
-	outbuf.WriteString("H")
-}
-
-func write_sgr_fg(a Attribute) {
-	switch output_mode {
-	case Output256, Output216, OutputGrayscale:
-		outbuf.WriteString("\033[38;5;")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
-		outbuf.WriteString("m")
-	default:
-		outbuf.WriteString("\033[3")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
-		outbuf.WriteString("m")
-	}
-}
-
-func write_sgr_bg(a Attribute) {
-	switch output_mode {
-	case Output256, Output216, OutputGrayscale:
-		outbuf.WriteString("\033[48;5;")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
-		outbuf.WriteString("m")
-	default:
-		outbuf.WriteString("\033[4")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
-		outbuf.WriteString("m")
-	}
-}
-
-func write_sgr(fg, bg Attribute) {
-	switch output_mode {
-	case Output256, Output216, OutputGrayscale:
-		outbuf.WriteString("\033[38;5;")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(fg-1), 10))
-		outbuf.WriteString("m")
-		outbuf.WriteString("\033[48;5;")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(bg-1), 10))
-		outbuf.WriteString("m")
-	default:
-		outbuf.WriteString("\033[3")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(fg-1), 10))
-		outbuf.WriteString(";4")
-		outbuf.Write(strconv.AppendUint(intbuf, uint64(bg-1), 10))
-		outbuf.WriteString("m")
-	}
-}
-
-type winsize struct {
-	rows    uint16
-	cols    uint16
-	xpixels uint16
-	ypixels uint16
-}
-
-func get_term_size(fd uintptr) (int, int) {
-	var sz winsize
-	_, _, _ = syscall.Syscall(syscall.SYS_IOCTL,
-		fd, uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&sz)))
-	return int(sz.cols), int(sz.rows)
-}
-
-func send_attr(fg, bg Attribute) {
-	if fg == lastfg && bg == lastbg {
-		return
-	}
-
-	outbuf.WriteString(funcs[t_sgr0])
-
-	var fgcol, bgcol Attribute
-
-	switch output_mode {
-	case Output256:
-		fgcol = fg & 0x1FF
-		bgcol = bg & 0x1FF
-	case Output216:
-		fgcol = fg & 0xFF
-		bgcol = bg & 0xFF
-		if fgcol > 216 {
-			fgcol = ColorDefault
-		}
-		if bgcol > 216 {
-			bgcol = ColorDefault
-		}
-		if fgcol != ColorDefault {
-			fgcol += 0x10
-		}
-		if bgcol != ColorDefault {
-			bgcol += 0x10
-		}
-	case OutputGrayscale:
-		fgcol = fg & 0x1F
-		bgcol = bg & 0x1F
-		if fgcol > 26 {
-			fgcol = ColorDefault
-		}
-		if bgcol > 26 {
-			bgcol = ColorDefault
-		}
-		if fgcol != ColorDefault {
-			fgcol = grayscale[fgcol]
-		}
-		if bgcol != ColorDefault {
-			bgcol = grayscale[bgcol]
-		}
-	default:
-		fgcol = fg & 0x0F
-		bgcol = bg & 0x0F
-	}
-
-	if fgcol != ColorDefault {
-		if bgcol != ColorDefault {
-			write_sgr(fgcol, bgcol)
-		} else {
-			write_sgr_fg(fgcol)
-		}
-	} else if bgcol != ColorDefault {
-		write_sgr_bg(bgcol)
-	}
-
-	if fg&AttrBold != 0 {
-		outbuf.WriteString(funcs[t_bold])
-	}
-	if bg&AttrBold != 0 {
-		outbuf.WriteString(funcs[t_blink])
-	}
-	if fg&AttrUnderline != 0 {
-		outbuf.WriteString(funcs[t_underline])
-	}
-	if fg&AttrReverse|bg&AttrReverse != 0 {
-		outbuf.WriteString(funcs[t_reverse])
-	}
-
-	lastfg, lastbg = fg, bg
-}
-
-func send_char(x, y int, ch rune) {
-	var buf [8]byte
-	n := utf8.EncodeRune(buf[:], ch)
-	if x-1 != lastx || y != lasty {
-		write_cursor(x, y)
-	}
-	lastx, lasty = x, y
-	outbuf.Write(buf[:n])
-}
-
-func flush() error {
-	_, err := io.Copy(out, &outbuf)
-	outbuf.Reset()
-	return err
-}
-
-func send_clear() error {
-	send_attr(foreground, background)
-	outbuf.WriteString(funcs[t_clear_screen])
-	if !is_cursor_hidden(cursor_x, cursor_y) {
-		write_cursor(cursor_x, cursor_y)
-	}
-
-	// we need to invalidate cursor position too and these two vars are
-	// used only for simple cursor positioning optimization, cursor
-	// actually may be in the correct place, but we simply discard
-	// optimization once and it gives us simple solution for the case when
-	// cursor moved
-	lastx = coord_invalid
-	lasty = coord_invalid
-
-	return flush()
-}
-
-func update_size_maybe() error {
-	w, h := get_term_size(out.Fd())
-	if w != termw || h != termh {
-		termw, termh = w, h
-		back_buffer.resize(termw, termh)
-		front_buffer.resize(termw, termh)
-		front_buffer.clear()
-		return send_clear()
-	}
-	return nil
-}
-
-func tcsetattr(fd uintptr, termios *syscall_Termios) error {
-	r, _, e := syscall.Syscall(syscall.SYS_IOCTL,
-		fd, uintptr(syscall_TCSETS), uintptr(unsafe.Pointer(termios)))
-	if r != 0 {
-		return os.NewSyscallError("SYS_IOCTL", e)
-	}
-	return nil
-}
-
-func tcgetattr(fd uintptr, termios *syscall_Termios) error {
-	r, _, e := syscall.Syscall(syscall.SYS_IOCTL,
-		fd, uintptr(syscall_TCGETS), uintptr(unsafe.Pointer(termios)))
-	if r != 0 {
-		return os.NewSyscallError("SYS_IOCTL", e)
-	}
-	return nil
-}
-
-func parse_mouse_event(event *Event, buf string) (int, bool) {
-	if strings.HasPrefix(buf, "\033[M") && len(buf) >= 6 {
-		// X10 mouse encoding, the simplest one
-		// \033 [ M Cb Cx Cy
-		b := buf[3] - 32
-		switch b & 3 {
-		case 0:
-			if b&64 != 0 {
-				event.Key = MouseWheelUp
-			} else {
-				event.Key = MouseLeft
-			}
-		case 1:
-			if b&64 != 0 {
-				event.Key = MouseWheelDown
-			} else {
-				event.Key = MouseMiddle
-			}
-		case 2:
-			event.Key = MouseRight
-		case 3:
-			event.Key = MouseRelease
-		default:
-			return 6, false
-		}
-		event.Type = EventMouse // KeyEvent by default
-		if b&32 != 0 {
-			event.Mod |= ModMotion
-		}
-
-		// the coord is 1,1 for upper left
-		event.MouseX = int(buf[4]) - 1 - 32
-		event.MouseY = int(buf[5]) - 1 - 32
-		return 6, true
-	} else if strings.HasPrefix(buf, "\033[<") || strings.HasPrefix(buf, "\033[") {
-		// xterm 1006 extended mode or urxvt 1015 extended mode
-		// xterm: \033 [ < Cb ; Cx ; Cy (M or m)
-		// urxvt: \033 [ Cb ; Cx ; Cy M
-
-		// find the first M or m, that's where we stop
-		mi := strings.IndexAny(buf, "Mm")
-		if mi == -1 {
-			return 0, false
-		}
-
-		// whether it's a capital M or not
-		isM := buf[mi] == 'M'
-
-		// whether it's urxvt or not
-		isU := false
-
-		// buf[2] is safe here, because having M or m found means we have at
-		// least 3 bytes in a string
-		if buf[2] == '<' {
-			buf = buf[3:mi]
-		} else {
-			isU = true
-			buf = buf[2:mi]
-		}
-
-		s1 := strings.Index(buf, ";")
-		s2 := strings.LastIndex(buf, ";")
-		// not found or only one ';'
-		if s1 == -1 || s2 == -1 || s1 == s2 {
-			return 0, false
-		}
-
-		n1, err := strconv.ParseInt(buf[0:s1], 10, 64)
-		if err != nil {
-			return 0, false
-		}
-		n2, err := strconv.ParseInt(buf[s1+1:s2], 10, 64)
-		if err != nil {
-			return 0, false
-		}
-		n3, err := strconv.ParseInt(buf[s2+1:], 10, 64)
-		if err != nil {
-			return 0, false
-		}
-
-		// on urxvt, first number is encoded exactly as in X10, but we need to
-		// make it zero-based, on xterm it is zero-based already
-		if isU {
-			n1 -= 32
-		}
-		switch n1 & 3 {
-		case 0:
-			if n1&64 != 0 {
-				event.Key = MouseWheelUp
-			} else {
-				event.Key = MouseLeft
-			}
-		case 1:
-			if n1&64 != 0 {
-				event.Key = MouseWheelDown
-			} else {
-				event.Key = MouseMiddle
-			}
-		case 2:
-			event.Key = MouseRight
-		case 3:
-			event.Key = MouseRelease
-		default:
-			return mi + 1, false
-		}
-		if !isM {
-			// on xterm mouse release is signaled by lowercase m
-			event.Key = MouseRelease
-		}
-
-		event.Type = EventMouse // KeyEvent by default
-		if n1&32 != 0 {
-			event.Mod |= ModMotion
-		}
-
-		event.MouseX = int(n2) - 1
-		event.MouseY = int(n3) - 1
-		return mi + 1, true
-	}
-
-	return 0, false
-}
-
-func parse_escape_sequence(event *Event, buf []byte) (int, bool) {
-	bufstr := string(buf)
-	for i, key := range keys {
-		if strings.HasPrefix(bufstr, key) {
-			event.Ch = 0
-			event.Key = Key(0xFFFF - i)
-			return len(key), true
-		}
-	}
-
-	// if none of the keys match, let's try mouse sequences
-	return parse_mouse_event(event, bufstr)
-}
-
-func extract_raw_event(data []byte, event *Event) bool {
-	if len(inbuf) == 0 {
-		return false
-	}
-
-	n := len(data)
-	if n == 0 {
-		return false
-	}
-
-	n = copy(data, inbuf)
-	copy(inbuf, inbuf[n:])
-	inbuf = inbuf[:len(inbuf)-n]
-
-	event.N = n
-	event.Type = EventRaw
-	return true
-}
-
-func extract_event(inbuf []byte, event *Event, allow_esc_wait bool) extract_event_res {
-	if len(inbuf) == 0 {
-		event.N = 0
-		return event_not_extracted
-	}
-
-	if inbuf[0] == '\033' {
-		// possible escape sequence
-		if n, ok := parse_escape_sequence(event, inbuf); n != 0 {
-			event.N = n
-			if ok {
-				return event_extracted
-			} else {
-				return event_not_extracted
-			}
-		}
-
-		// possible partially read escape sequence; trigger a wait if appropriate
-		if enable_wait_for_escape_sequence() && allow_esc_wait {
-			event.N = 0
-			return esc_wait
-		}
-
-		// it's not escape sequence, then it's Alt or Esc, check input_mode
-		switch {
-		case input_mode&InputEsc != 0:
-			// if we're in escape mode, fill Esc event, pop buffer, return success
-			event.Ch = 0
-			event.Key = KeyEsc
-			event.Mod = 0
-			event.N = 1
-			return event_extracted
-		case input_mode&InputAlt != 0:
-			// if we're in alt mode, set Alt modifier to event and redo parsing
-			event.Mod = ModAlt
-			status := extract_event(inbuf[1:], event, false)
-			if status == event_extracted {
-				event.N++
-			} else {
-				event.N = 0
-			}
-			return status
-		default:
-			panic("unreachable")
-		}
-	}
-
-	// if we're here, this is not an escape sequence and not an alt sequence
-	// so, it's a FUNCTIONAL KEY or a UNICODE character
-
-	// first of all check if it's a functional key
-	if Key(inbuf[0]) <= KeySpace || Key(inbuf[0]) == KeyBackspace2 {
-		// fill event, pop buffer, return success
-		event.Ch = 0
-		event.Key = Key(inbuf[0])
-		event.N = 1
-		return event_extracted
-	}
-
-	// the only possible option is utf8 rune
-	if r, n := utf8.DecodeRune(inbuf); r != utf8.RuneError {
-		event.Ch = r
-		event.Key = 0
-		event.N = n
-		return event_extracted
-	}
-
-	return event_not_extracted
-}
-
-func fcntl(fd int, cmd int, arg int) (val int, err error) {
-	r, _, e := syscall.Syscall(syscall.SYS_FCNTL, uintptr(fd), uintptr(cmd),
-		uintptr(arg))
-	val = int(r)
-	if e != 0 {
-		err = e
-	}
-	return
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/termbox_common.go b/vendor/github.com/miguelmota/termbox-go/termbox_common.go
deleted file mode 100644
index c3355cc..0000000
--- a/vendor/github.com/miguelmota/termbox-go/termbox_common.go
+++ /dev/null
@@ -1,59 +0,0 @@
-package termbox
-
-// private API, common OS agnostic part
-
-type cellbuf struct {
-	width  int
-	height int
-	cells  []Cell
-}
-
-func (this *cellbuf) init(width, height int) {
-	this.width = width
-	this.height = height
-	this.cells = make([]Cell, width*height)
-}
-
-func (this *cellbuf) resize(width, height int) {
-	if this.width == width && this.height == height {
-		return
-	}
-
-	oldw := this.width
-	oldh := this.height
-	oldcells := this.cells
-
-	this.init(width, height)
-	this.clear()
-
-	minw, minh := oldw, oldh
-
-	if width < minw {
-		minw = width
-	}
-	if height < minh {
-		minh = height
-	}
-
-	for i := 0; i < minh; i++ {
-		srco, dsto := i*oldw, i*width
-		src := oldcells[srco : srco+minw]
-		dst := this.cells[dsto : dsto+minw]
-		copy(dst, src)
-	}
-}
-
-func (this *cellbuf) clear() {
-	for i := range this.cells {
-		c := &this.cells[i]
-		c.Ch = ' '
-		c.Fg = foreground
-		c.Bg = background
-	}
-}
-
-const cursor_hidden = -1
-
-func is_cursor_hidden(x, y int) bool {
-	return x == cursor_hidden || y == cursor_hidden
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/termbox_windows.go b/vendor/github.com/miguelmota/termbox-go/termbox_windows.go
deleted file mode 100644
index 22e0f9e..0000000
--- a/vendor/github.com/miguelmota/termbox-go/termbox_windows.go
+++ /dev/null
@@ -1,948 +0,0 @@
-package termbox
-
-import "math"
-import "syscall"
-import "unsafe"
-import "unicode/utf16"
-import "github.com/mattn/go-runewidth"
-
-type (
-	wchar     uint16
-	short     int16
-	dword     uint32
-	word      uint16
-	char_info struct {
-		char wchar
-		attr word
-	}
-	coord struct {
-		x short
-		y short
-	}
-	small_rect struct {
-		left   short
-		top    short
-		right  short
-		bottom short
-	}
-	console_screen_buffer_info struct {
-		size                coord
-		cursor_position     coord
-		attributes          word
-		window              small_rect
-		maximum_window_size coord
-	}
-	console_cursor_info struct {
-		size    dword
-		visible int32
-	}
-	input_record struct {
-		event_type word
-		_          [2]byte
-		event      [16]byte
-	}
-	key_event_record struct {
-		key_down          int32
-		repeat_count      word
-		virtual_key_code  word
-		virtual_scan_code word
-		unicode_char      wchar
-		control_key_state dword
-	}
-	window_buffer_size_record struct {
-		size coord
-	}
-	mouse_event_record struct {
-		mouse_pos         coord
-		button_state      dword
-		control_key_state dword
-		event_flags       dword
-	}
-	console_font_info struct {
-		font      uint32
-		font_size coord
-	}
-)
-
-const (
-	mouse_lmb = 0x1
-	mouse_rmb = 0x2
-	mouse_mmb = 0x4 | 0x8 | 0x10
-	SM_CXMIN  = 28
-	SM_CYMIN  = 29
-)
-
-func (this coord) uintptr() uintptr {
-	return uintptr(*(*int32)(unsafe.Pointer(&this)))
-}
-
-func (this *small_rect) uintptr() uintptr {
-	return uintptr(unsafe.Pointer(this))
-}
-
-var kernel32 = syscall.NewLazyDLL("kernel32.dll")
-var moduser32 = syscall.NewLazyDLL("user32.dll")
-var is_cjk = runewidth.IsEastAsian()
-
-var (
-	proc_set_console_active_screen_buffer = kernel32.NewProc("SetConsoleActiveScreenBuffer")
-	proc_set_console_screen_buffer_size   = kernel32.NewProc("SetConsoleScreenBufferSize")
-	proc_set_console_window_info          = kernel32.NewProc("SetConsoleWindowInfo")
-	proc_create_console_screen_buffer     = kernel32.NewProc("CreateConsoleScreenBuffer")
-	proc_get_console_screen_buffer_info   = kernel32.NewProc("GetConsoleScreenBufferInfo")
-	proc_write_console_output             = kernel32.NewProc("WriteConsoleOutputW")
-	proc_write_console_output_character   = kernel32.NewProc("WriteConsoleOutputCharacterW")
-	proc_write_console_output_attribute   = kernel32.NewProc("WriteConsoleOutputAttribute")
-	proc_set_console_cursor_info          = kernel32.NewProc("SetConsoleCursorInfo")
-	proc_set_console_cursor_position      = kernel32.NewProc("SetConsoleCursorPosition")
-	proc_get_console_cursor_info          = kernel32.NewProc("GetConsoleCursorInfo")
-	proc_read_console_input               = kernel32.NewProc("ReadConsoleInputW")
-	proc_get_console_mode                 = kernel32.NewProc("GetConsoleMode")
-	proc_set_console_mode                 = kernel32.NewProc("SetConsoleMode")
-	proc_fill_console_output_character    = kernel32.NewProc("FillConsoleOutputCharacterW")
-	proc_fill_console_output_attribute    = kernel32.NewProc("FillConsoleOutputAttribute")
-	proc_create_event                     = kernel32.NewProc("CreateEventW")
-	proc_wait_for_multiple_objects        = kernel32.NewProc("WaitForMultipleObjects")
-	proc_set_event                        = kernel32.NewProc("SetEvent")
-	proc_get_current_console_font         = kernel32.NewProc("GetCurrentConsoleFont")
-	get_system_metrics                    = moduser32.NewProc("GetSystemMetrics")
-)
-
-func set_console_active_screen_buffer(h syscall.Handle) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_set_console_active_screen_buffer.Addr(),
-		1, uintptr(h), 0, 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func set_console_screen_buffer_size(h syscall.Handle, size coord) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_set_console_screen_buffer_size.Addr(),
-		2, uintptr(h), size.uintptr(), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func set_console_window_info(h syscall.Handle, window *small_rect) (err error) {
-	var absolute uint32
-	absolute = 1
-	r0, _, e1 := syscall.Syscall(proc_set_console_window_info.Addr(),
-		3, uintptr(h), uintptr(absolute), window.uintptr())
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func create_console_screen_buffer() (h syscall.Handle, err error) {
-	r0, _, e1 := syscall.Syscall6(proc_create_console_screen_buffer.Addr(),
-		5, uintptr(generic_read|generic_write), 0, 0, console_textmode_buffer, 0, 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return syscall.Handle(r0), err
-}
-
-func get_console_screen_buffer_info(h syscall.Handle, info *console_screen_buffer_info) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_get_console_screen_buffer_info.Addr(),
-		2, uintptr(h), uintptr(unsafe.Pointer(info)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func write_console_output(h syscall.Handle, chars []char_info, dst small_rect) (err error) {
-	tmp_coord = coord{dst.right - dst.left + 1, dst.bottom - dst.top + 1}
-	tmp_rect = dst
-	r0, _, e1 := syscall.Syscall6(proc_write_console_output.Addr(),
-		5, uintptr(h), uintptr(unsafe.Pointer(&chars[0])), tmp_coord.uintptr(),
-		tmp_coord0.uintptr(), uintptr(unsafe.Pointer(&tmp_rect)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func write_console_output_character(h syscall.Handle, chars []wchar, pos coord) (err error) {
-	r0, _, e1 := syscall.Syscall6(proc_write_console_output_character.Addr(),
-		5, uintptr(h), uintptr(unsafe.Pointer(&chars[0])), uintptr(len(chars)),
-		pos.uintptr(), uintptr(unsafe.Pointer(&tmp_arg)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func write_console_output_attribute(h syscall.Handle, attrs []word, pos coord) (err error) {
-	r0, _, e1 := syscall.Syscall6(proc_write_console_output_attribute.Addr(),
-		5, uintptr(h), uintptr(unsafe.Pointer(&attrs[0])), uintptr(len(attrs)),
-		pos.uintptr(), uintptr(unsafe.Pointer(&tmp_arg)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func set_console_cursor_info(h syscall.Handle, info *console_cursor_info) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_set_console_cursor_info.Addr(),
-		2, uintptr(h), uintptr(unsafe.Pointer(info)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func get_console_cursor_info(h syscall.Handle, info *console_cursor_info) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_get_console_cursor_info.Addr(),
-		2, uintptr(h), uintptr(unsafe.Pointer(info)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func set_console_cursor_position(h syscall.Handle, pos coord) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_set_console_cursor_position.Addr(),
-		2, uintptr(h), pos.uintptr(), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func read_console_input(h syscall.Handle, record *input_record) (err error) {
-	r0, _, e1 := syscall.Syscall6(proc_read_console_input.Addr(),
-		4, uintptr(h), uintptr(unsafe.Pointer(record)), 1, uintptr(unsafe.Pointer(&tmp_arg)), 0, 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func get_console_mode(h syscall.Handle, mode *dword) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_get_console_mode.Addr(),
-		2, uintptr(h), uintptr(unsafe.Pointer(mode)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func set_console_mode(h syscall.Handle, mode dword) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_set_console_mode.Addr(),
-		2, uintptr(h), uintptr(mode), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func fill_console_output_character(h syscall.Handle, char wchar, n int) (err error) {
-	tmp_coord = coord{0, 0}
-	r0, _, e1 := syscall.Syscall6(proc_fill_console_output_character.Addr(),
-		5, uintptr(h), uintptr(char), uintptr(n), tmp_coord.uintptr(),
-		uintptr(unsafe.Pointer(&tmp_arg)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func fill_console_output_attribute(h syscall.Handle, attr word, n int) (err error) {
-	tmp_coord = coord{0, 0}
-	r0, _, e1 := syscall.Syscall6(proc_fill_console_output_attribute.Addr(),
-		5, uintptr(h), uintptr(attr), uintptr(n), tmp_coord.uintptr(),
-		uintptr(unsafe.Pointer(&tmp_arg)), 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func create_event() (out syscall.Handle, err error) {
-	r0, _, e1 := syscall.Syscall6(proc_create_event.Addr(),
-		4, 0, 0, 0, 0, 0, 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return syscall.Handle(r0), err
-}
-
-func wait_for_multiple_objects(objects []syscall.Handle) (err error) {
-	r0, _, e1 := syscall.Syscall6(proc_wait_for_multiple_objects.Addr(),
-		4, uintptr(len(objects)), uintptr(unsafe.Pointer(&objects[0])),
-		0, 0xFFFFFFFF, 0, 0)
-	if uint32(r0) == 0xFFFFFFFF {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func set_event(ev syscall.Handle) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_set_event.Addr(),
-		1, uintptr(ev), 0, 0)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-func get_current_console_font(h syscall.Handle, info *console_font_info) (err error) {
-	r0, _, e1 := syscall.Syscall(proc_get_current_console_font.Addr(),
-		3, uintptr(h), 0, uintptr(unsafe.Pointer(info)))
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
-type diff_msg struct {
-	pos   short
-	lines short
-	chars []char_info
-}
-
-type input_event struct {
-	event Event
-	err   error
-}
-
-var (
-	orig_cursor_info console_cursor_info
-	orig_size        coord
-	orig_window      small_rect
-	orig_mode        dword
-	orig_screen      syscall.Handle
-	back_buffer      cellbuf
-	front_buffer     cellbuf
-	term_size        coord
-	input_mode       = InputEsc
-	cursor_x         = cursor_hidden
-	cursor_y         = cursor_hidden
-	foreground       = ColorDefault
-	background       = ColorDefault
-	in               syscall.Handle
-	out              syscall.Handle
-	interrupt        syscall.Handle
-	charbuf          []char_info
-	diffbuf          []diff_msg
-	beg_x            = -1
-	beg_y            = -1
-	beg_i            = -1
-	input_comm       = make(chan Event)
-	interrupt_comm   = make(chan struct{})
-	cancel_comm      = make(chan bool, 1)
-	cancel_done_comm = make(chan bool)
-	alt_mode_esc     = false
-
-	// these ones just to prevent heap allocs at all costs
-	tmp_info   console_screen_buffer_info
-	tmp_arg    dword
-	tmp_coord0 = coord{0, 0}
-	tmp_coord  = coord{0, 0}
-	tmp_rect   = small_rect{0, 0, 0, 0}
-	tmp_finfo  console_font_info
-)
-
-func get_cursor_position(out syscall.Handle) coord {
-	err := get_console_screen_buffer_info(out, &tmp_info)
-	if err != nil {
-		panic(err)
-	}
-	return tmp_info.cursor_position
-}
-
-func get_term_size(out syscall.Handle) (coord, small_rect) {
-	err := get_console_screen_buffer_info(out, &tmp_info)
-	if err != nil {
-		panic(err)
-	}
-	return tmp_info.size, tmp_info.window
-}
-
-func get_win_min_size(out syscall.Handle) coord {
-	x, _, err := get_system_metrics.Call(SM_CXMIN)
-	y, _, err := get_system_metrics.Call(SM_CYMIN)
-
-	if x == 0 || y == 0 {
-		if err != nil {
-			panic(err)
-		}
-	}
-
-	err1 := get_current_console_font(out, &tmp_finfo)
-	if err1 != nil {
-		panic(err1)
-	}
-
-	return coord{
-		x: short(math.Ceil(float64(x) / float64(tmp_finfo.font_size.x))),
-		y: short(math.Ceil(float64(y) / float64(tmp_finfo.font_size.y))),
-	}
-}
-
-func get_win_size(out syscall.Handle) coord {
-	err := get_console_screen_buffer_info(out, &tmp_info)
-	if err != nil {
-		panic(err)
-	}
-
-	min_size := get_win_min_size(out)
-
-	size := coord{
-		x: tmp_info.window.right - tmp_info.window.left + 1,
-		y: tmp_info.window.bottom - tmp_info.window.top + 1,
-	}
-
-	if size.x < min_size.x {
-		size.x = min_size.x
-	}
-
-	if size.y < min_size.y {
-		size.y = min_size.y
-	}
-
-	return size
-}
-
-func fix_win_size(out syscall.Handle, size coord) (err error) {
-	window := small_rect{}
-	window.top = 0
-	window.bottom = size.y - 1
-	window.left = 0
-	window.right = size.x - 1
-	return set_console_window_info(out, &window)
-}
-
-func update_size_maybe() {
-	size := get_win_size(out)
-	if size.x != term_size.x || size.y != term_size.y {
-		set_console_screen_buffer_size(out, size)
-		fix_win_size(out, size)
-		term_size = size
-		back_buffer.resize(int(size.x), int(size.y))
-		front_buffer.resize(int(size.x), int(size.y))
-		front_buffer.clear()
-		clear()
-
-		area := int(size.x) * int(size.y)
-		if cap(charbuf) < area {
-			charbuf = make([]char_info, 0, area)
-		}
-	}
-}
-
-var color_table_bg = []word{
-	0, // default (black)
-	0, // black
-	background_red,
-	background_green,
-	background_red | background_green, // yellow
-	background_blue,
-	background_red | background_blue,   // magenta
-	background_green | background_blue, // cyan
-	background_red | background_blue | background_green, // white
-}
-
-var color_table_fg = []word{
-	foreground_red | foreground_blue | foreground_green, // default (white)
-	0,
-	foreground_red,
-	foreground_green,
-	foreground_red | foreground_green, // yellow
-	foreground_blue,
-	foreground_red | foreground_blue,   // magenta
-	foreground_green | foreground_blue, // cyan
-	foreground_red | foreground_blue | foreground_green, // white
-}
-
-const (
-	replacement_char = '\uFFFD'
-	max_rune         = '\U0010FFFF'
-	surr1            = 0xd800
-	surr2            = 0xdc00
-	surr3            = 0xe000
-	surr_self        = 0x10000
-)
-
-func append_diff_line(y int) int {
-	n := 0
-	for x := 0; x < front_buffer.width; {
-		cell_offset := y*front_buffer.width + x
-		back := &back_buffer.cells[cell_offset]
-		front := &front_buffer.cells[cell_offset]
-		attr, char := cell_to_char_info(*back)
-		charbuf = append(charbuf, char_info{attr: attr, char: char[0]})
-		*front = *back
-		n++
-		w := runewidth.RuneWidth(back.Ch)
-		if w == 0 || w == 2 && runewidth.IsAmbiguousWidth(back.Ch) {
-			w = 1
-		}
-		x += w
-		// If not CJK, fill trailing space with whitespace
-		if !is_cjk && w == 2 {
-			charbuf = append(charbuf, char_info{attr: attr, char: ' '})
-		}
-	}
-	return n
-}
-
-// compares 'back_buffer' with 'front_buffer' and prepares all changes in the form of
-// 'diff_msg's in the 'diff_buf'
-func prepare_diff_messages() {
-	// clear buffers
-	diffbuf = diffbuf[:0]
-	charbuf = charbuf[:0]
-
-	var diff diff_msg
-	gbeg := 0
-	for y := 0; y < front_buffer.height; y++ {
-		same := true
-		line_offset := y * front_buffer.width
-		for x := 0; x < front_buffer.width; x++ {
-			cell_offset := line_offset + x
-			back := &back_buffer.cells[cell_offset]
-			front := &front_buffer.cells[cell_offset]
-			if *back != *front {
-				same = false
-				break
-			}
-		}
-		if same && diff.lines > 0 {
-			diffbuf = append(diffbuf, diff)
-			diff = diff_msg{}
-		}
-		if !same {
-			beg := len(charbuf)
-			end := beg + append_diff_line(y)
-			if diff.lines == 0 {
-				diff.pos = short(y)
-				gbeg = beg
-			}
-			diff.lines++
-			diff.chars = charbuf[gbeg:end]
-		}
-	}
-	if diff.lines > 0 {
-		diffbuf = append(diffbuf, diff)
-		diff = diff_msg{}
-	}
-}
-
-func get_ct(table []word, idx int) word {
-	idx = idx & 0x0F
-	if idx >= len(table) {
-		idx = len(table) - 1
-	}
-	return table[idx]
-}
-
-func cell_to_char_info(c Cell) (attr word, wc [2]wchar) {
-	attr = get_ct(color_table_fg, int(c.Fg)) | get_ct(color_table_bg, int(c.Bg))
-	if c.Fg&AttrReverse|c.Bg&AttrReverse != 0 {
-		attr = (attr&0xF0)>>4 | (attr&0x0F)<<4
-	}
-	if c.Fg&AttrBold != 0 {
-		attr |= foreground_intensity
-	}
-	if c.Bg&AttrBold != 0 {
-		attr |= background_intensity
-	}
-
-	r0, r1 := utf16.EncodeRune(c.Ch)
-	if r0 == 0xFFFD {
-		wc[0] = wchar(c.Ch)
-		wc[1] = ' '
-	} else {
-		wc[0] = wchar(r0)
-		wc[1] = wchar(r1)
-	}
-	return
-}
-
-func move_cursor(x, y int) {
-	err := set_console_cursor_position(out, coord{short(x), short(y)})
-	if err != nil {
-		panic(err)
-	}
-}
-
-func show_cursor(visible bool) {
-	var v int32
-	if visible {
-		v = 1
-	}
-
-	var info console_cursor_info
-	info.size = 100
-	info.visible = v
-	err := set_console_cursor_info(out, &info)
-	if err != nil {
-		panic(err)
-	}
-}
-
-func clear() {
-	var err error
-	attr, char := cell_to_char_info(Cell{
-		' ',
-		foreground,
-		background,
-	})
-
-	area := int(term_size.x) * int(term_size.y)
-	err = fill_console_output_attribute(out, attr, area)
-	if err != nil {
-		panic(err)
-	}
-	err = fill_console_output_character(out, char[0], area)
-	if err != nil {
-		panic(err)
-	}
-	if !is_cursor_hidden(cursor_x, cursor_y) {
-		move_cursor(cursor_x, cursor_y)
-	}
-}
-
-func key_event_record_to_event(r *key_event_record) (Event, bool) {
-	if r.key_down == 0 {
-		return Event{}, false
-	}
-
-	e := Event{Type: EventKey}
-	if input_mode&InputAlt != 0 {
-		if alt_mode_esc {
-			e.Mod = ModAlt
-			alt_mode_esc = false
-		}
-		if r.control_key_state&(left_alt_pressed|right_alt_pressed) != 0 {
-			e.Mod = ModAlt
-		}
-	}
-
-	ctrlpressed := r.control_key_state&(left_ctrl_pressed|right_ctrl_pressed) != 0
-
-	if r.virtual_key_code >= vk_f1 && r.virtual_key_code <= vk_f12 {
-		switch r.virtual_key_code {
-		case vk_f1:
-			e.Key = KeyF1
-		case vk_f2:
-			e.Key = KeyF2
-		case vk_f3:
-			e.Key = KeyF3
-		case vk_f4:
-			e.Key = KeyF4
-		case vk_f5:
-			e.Key = KeyF5
-		case vk_f6:
-			e.Key = KeyF6
-		case vk_f7:
-			e.Key = KeyF7
-		case vk_f8:
-			e.Key = KeyF8
-		case vk_f9:
-			e.Key = KeyF9
-		case vk_f10:
-			e.Key = KeyF10
-		case vk_f11:
-			e.Key = KeyF11
-		case vk_f12:
-			e.Key = KeyF12
-		default:
-			panic("unreachable")
-		}
-
-		return e, true
-	}
-
-	if r.virtual_key_code <= vk_delete {
-		switch r.virtual_key_code {
-		case vk_insert:
-			e.Key = KeyInsert
-		case vk_delete:
-			e.Key = KeyDelete
-		case vk_home:
-			e.Key = KeyHome
-		case vk_end:
-			e.Key = KeyEnd
-		case vk_pgup:
-			e.Key = KeyPgup
-		case vk_pgdn:
-			e.Key = KeyPgdn
-		case vk_arrow_up:
-			e.Key = KeyArrowUp
-		case vk_arrow_down:
-			e.Key = KeyArrowDown
-		case vk_arrow_left:
-			e.Key = KeyArrowLeft
-		case vk_arrow_right:
-			e.Key = KeyArrowRight
-		case vk_backspace:
-			if ctrlpressed {
-				e.Key = KeyBackspace2
-			} else {
-				e.Key = KeyBackspace
-			}
-		case vk_tab:
-			e.Key = KeyTab
-		case vk_enter:
-			e.Key = KeyEnter
-		case vk_esc:
-			switch {
-			case input_mode&InputEsc != 0:
-				e.Key = KeyEsc
-			case input_mode&InputAlt != 0:
-				alt_mode_esc = true
-				return Event{}, false
-			}
-		case vk_space:
-			if ctrlpressed {
-				// manual return here, because KeyCtrlSpace is zero
-				e.Key = KeyCtrlSpace
-				return e, true
-			} else {
-				e.Key = KeySpace
-			}
-		}
-
-		if e.Key != 0 {
-			return e, true
-		}
-	}
-
-	if ctrlpressed {
-		if Key(r.unicode_char) >= KeyCtrlA && Key(r.unicode_char) <= KeyCtrlRsqBracket {
-			e.Key = Key(r.unicode_char)
-			if input_mode&InputAlt != 0 && e.Key == KeyEsc {
-				alt_mode_esc = true
-				return Event{}, false
-			}
-			return e, true
-		}
-		switch r.virtual_key_code {
-		case 192, 50:
-			// manual return here, because KeyCtrl2 is zero
-			e.Key = KeyCtrl2
-			return e, true
-		case 51:
-			if input_mode&InputAlt != 0 {
-				alt_mode_esc = true
-				return Event{}, false
-			}
-			e.Key = KeyCtrl3
-		case 52:
-			e.Key = KeyCtrl4
-		case 53:
-			e.Key = KeyCtrl5
-		case 54:
-			e.Key = KeyCtrl6
-		case 189, 191, 55:
-			e.Key = KeyCtrl7
-		case 8, 56:
-			e.Key = KeyCtrl8
-		}
-
-		if e.Key != 0 {
-			return e, true
-		}
-	}
-
-	if r.unicode_char != 0 {
-		e.Ch = rune(r.unicode_char)
-		return e, true
-	}
-
-	return Event{}, false
-}
-
-func input_event_producer() {
-	var r input_record
-	var err error
-	var last_button Key
-	var last_button_pressed Key
-	var last_state = dword(0)
-	var last_x, last_y = -1, -1
-	handles := []syscall.Handle{in, interrupt}
-	for {
-		err = wait_for_multiple_objects(handles)
-		if err != nil {
-			input_comm <- Event{Type: EventError, Err: err}
-		}
-
-		select {
-		case <-cancel_comm:
-			cancel_done_comm <- true
-			return
-		default:
-		}
-
-		err = read_console_input(in, &r)
-		if err != nil {
-			input_comm <- Event{Type: EventError, Err: err}
-		}
-
-		switch r.event_type {
-		case key_event:
-			kr := (*key_event_record)(unsafe.Pointer(&r.event))
-			ev, ok := key_event_record_to_event(kr)
-			if ok {
-				for i := 0; i < int(kr.repeat_count); i++ {
-					input_comm <- ev
-				}
-			}
-		case window_buffer_size_event:
-			sr := *(*window_buffer_size_record)(unsafe.Pointer(&r.event))
-			input_comm <- Event{
-				Type:   EventResize,
-				Width:  int(sr.size.x),
-				Height: int(sr.size.y),
-			}
-		case mouse_event:
-			mr := *(*mouse_event_record)(unsafe.Pointer(&r.event))
-			ev := Event{Type: EventMouse}
-			switch mr.event_flags {
-			case 0, 2:
-				// single or double click
-				cur_state := mr.button_state
-				switch {
-				case last_state&mouse_lmb == 0 && cur_state&mouse_lmb != 0:
-					last_button = MouseLeft
-					last_button_pressed = last_button
-				case last_state&mouse_rmb == 0 && cur_state&mouse_rmb != 0:
-					last_button = MouseRight
-					last_button_pressed = last_button
-				case last_state&mouse_mmb == 0 && cur_state&mouse_mmb != 0:
-					last_button = MouseMiddle
-					last_button_pressed = last_button
-				case last_state&mouse_lmb != 0 && cur_state&mouse_lmb == 0:
-					last_button = MouseRelease
-				case last_state&mouse_rmb != 0 && cur_state&mouse_rmb == 0:
-					last_button = MouseRelease
-				case last_state&mouse_mmb != 0 && cur_state&mouse_mmb == 0:
-					last_button = MouseRelease
-				default:
-					last_state = cur_state
-					continue
-				}
-				last_state = cur_state
-				ev.Key = last_button
-				last_x, last_y = int(mr.mouse_pos.x), int(mr.mouse_pos.y)
-				ev.MouseX = last_x
-				ev.MouseY = last_y
-			case 1:
-				// mouse motion
-				x, y := int(mr.mouse_pos.x), int(mr.mouse_pos.y)
-				if last_state != 0 && (last_x != x || last_y != y) {
-					ev.Key = last_button_pressed
-					ev.Mod = ModMotion
-					ev.MouseX = x
-					ev.MouseY = y
-					last_x, last_y = x, y
-				} else {
-					ev.Type = EventNone
-				}
-			case 4:
-				// mouse wheel
-				n := int16(mr.button_state >> 16)
-				if n > 0 {
-					ev.Key = MouseWheelUp
-				} else {
-					ev.Key = MouseWheelDown
-				}
-				last_x, last_y = int(mr.mouse_pos.x), int(mr.mouse_pos.y)
-				ev.MouseX = last_x
-				ev.MouseY = last_y
-			default:
-				ev.Type = EventNone
-			}
-			if ev.Type != EventNone {
-				input_comm <- ev
-			}
-		}
-	}
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/terminfo.go b/vendor/github.com/miguelmota/termbox-go/terminfo.go
deleted file mode 100644
index ab2e7a1..0000000
--- a/vendor/github.com/miguelmota/termbox-go/terminfo.go
+++ /dev/null
@@ -1,232 +0,0 @@
-// +build !windows
-// This file contains a simple and incomplete implementation of the terminfo
-// database. Information was taken from the ncurses manpages term(5) and
-// terminfo(5). Currently, only the string capabilities for special keys and for
-// functions without parameters are actually used. Colors are still done with
-// ANSI escape sequences. Other special features that are not (yet?) supported
-// are reading from ~/.terminfo, the TERMINFO_DIRS variable, Berkeley database
-// format and extended capabilities.
-
-package termbox
-
-import (
-	"bytes"
-	"encoding/binary"
-	"encoding/hex"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"strings"
-)
-
-const (
-	ti_magic         = 0432
-	ti_header_length = 12
-	ti_mouse_enter   = "\x1b[?1000h\x1b[?1002h\x1b[?1015h\x1b[?1006h"
-	ti_mouse_leave   = "\x1b[?1006l\x1b[?1015l\x1b[?1002l\x1b[?1000l"
-)
-
-func load_terminfo() ([]byte, error) {
-	var data []byte
-	var err error
-
-	term := os.Getenv("TERM")
-	if term == "" {
-		return nil, fmt.Errorf("termbox: TERM not set")
-	}
-
-	// The following behaviour follows the one described in terminfo(5) as
-	// distributed by ncurses.
-
-	terminfo := os.Getenv("TERMINFO")
-	if terminfo != "" {
-		// if TERMINFO is set, no other directory should be searched
-		return ti_try_path(terminfo)
-	}
-
-	// next, consider ~/.terminfo
-	home := os.Getenv("HOME")
-	if home != "" {
-		data, err = ti_try_path(home + "/.terminfo")
-		if err == nil {
-			return data, nil
-		}
-	}
-
-	// next, TERMINFO_DIRS
-	dirs := os.Getenv("TERMINFO_DIRS")
-	if dirs != "" {
-		for _, dir := range strings.Split(dirs, ":") {
-			if dir == "" {
-				// "" -> "/usr/share/terminfo"
-				dir = "/usr/share/terminfo"
-			}
-			data, err = ti_try_path(dir)
-			if err == nil {
-				return data, nil
-			}
-		}
-	}
-
-	// next, /lib/terminfo
-	data, err = ti_try_path("/lib/terminfo")
-	if err == nil {
-		return data, nil
-	}
-
-	// fall back to /usr/share/terminfo
-	return ti_try_path("/usr/share/terminfo")
-}
-
-func ti_try_path(path string) (data []byte, err error) {
-	// load_terminfo already made sure it is set
-	term := os.Getenv("TERM")
-
-	// first try, the typical *nix path
-	terminfo := path + "/" + term[0:1] + "/" + term
-	data, err = ioutil.ReadFile(terminfo)
-	if err == nil {
-		return
-	}
-
-	// fallback to darwin specific dirs structure
-	terminfo = path + "/" + hex.EncodeToString([]byte(term[:1])) + "/" + term
-	data, err = ioutil.ReadFile(terminfo)
-	return
-}
-
-func setup_term_builtin() error {
-	name := os.Getenv("TERM")
-	if name == "" {
-		return errors.New("termbox: TERM environment variable not set")
-	}
-
-	for _, t := range terms {
-		if t.name == name {
-			keys = t.keys
-			funcs = t.funcs
-			return nil
-		}
-	}
-
-	compat_table := []struct {
-		partial string
-		keys    []string
-		funcs   []string
-	}{
-		{"xterm", xterm_keys, xterm_funcs},
-		{"rxvt", rxvt_unicode_keys, rxvt_unicode_funcs},
-		{"linux", linux_keys, linux_funcs},
-		{"Eterm", eterm_keys, eterm_funcs},
-		{"screen", screen_keys, screen_funcs},
-		// let's assume that 'cygwin' is xterm compatible
-		{"cygwin", xterm_keys, xterm_funcs},
-		{"st", xterm_keys, xterm_funcs},
-	}
-
-	// try compatibility variants
-	for _, it := range compat_table {
-		if strings.Contains(name, it.partial) {
-			keys = it.keys
-			funcs = it.funcs
-			return nil
-		}
-	}
-
-	return errors.New("termbox: unsupported terminal")
-}
-
-func setup_term() (err error) {
-	var data []byte
-	var header [6]int16
-	var str_offset, table_offset int16
-
-	data, err = load_terminfo()
-	if err != nil {
-		return setup_term_builtin()
-	}
-
-	rd := bytes.NewReader(data)
-	// 0: magic number, 1: size of names section, 2: size of boolean section, 3:
-	// size of numbers section (in integers), 4: size of the strings section (in
-	// integers), 5: size of the string table
-
-	err = binary.Read(rd, binary.LittleEndian, header[:])
-	if err != nil {
-		return
-	}
-
-	number_sec_len := int16(2)
-	if header[0] == 542 { // doc says it should be octal 0542, but what I see it terminfo files is 542, learn to program please... thank you..
-		number_sec_len = 4
-	}
-
-	if (header[1]+header[2])%2 != 0 {
-		// old quirk to align everything on word boundaries
-		header[2] += 1
-	}
-	str_offset = ti_header_length + header[1] + header[2] + number_sec_len*header[3]
-	table_offset = str_offset + 2*header[4]
-
-	keys = make([]string, 0xFFFF-key_min)
-	for i, _ := range keys {
-		keys[i], err = ti_read_string(rd, str_offset+2*ti_keys[i], table_offset)
-		if err != nil {
-			return
-		}
-	}
-	funcs = make([]string, t_max_funcs)
-	// the last two entries are reserved for mouse. because the table offset is
-	// not there, the two entries have to fill in manually
-	for i, _ := range funcs[:len(funcs)-2] {
-		funcs[i], err = ti_read_string(rd, str_offset+2*ti_funcs[i], table_offset)
-		if err != nil {
-			return
-		}
-	}
-	funcs[t_max_funcs-2] = ti_mouse_enter
-	funcs[t_max_funcs-1] = ti_mouse_leave
-	return nil
-}
-
-func ti_read_string(rd *bytes.Reader, str_off, table int16) (string, error) {
-	var off int16
-
-	_, err := rd.Seek(int64(str_off), 0)
-	if err != nil {
-		return "", err
-	}
-	err = binary.Read(rd, binary.LittleEndian, &off)
-	if err != nil {
-		return "", err
-	}
-	_, err = rd.Seek(int64(table+off), 0)
-	if err != nil {
-		return "", err
-	}
-	var bs []byte
-	for {
-		b, err := rd.ReadByte()
-		if err != nil {
-			return "", err
-		}
-		if b == byte(0x00) {
-			break
-		}
-		bs = append(bs, b)
-	}
-	return string(bs), nil
-}
-
-// "Maps" the function constants from termbox.go to the number of the respective
-// string capability in the terminfo file. Taken from (ncurses) term.h.
-var ti_funcs = []int16{
-	28, 40, 16, 13, 5, 39, 36, 27, 26, 34, 89, 88,
-}
-
-// Same as above for the special keys.
-var ti_keys = []int16{
-	66, 68 /* apparently not a typo; 67 is F10 for whatever reason */, 69, 70,
-	71, 72, 73, 74, 75, 67, 216, 217, 77, 59, 76, 164, 82, 81, 87, 61, 79, 83,
-}
diff --git a/vendor/github.com/miguelmota/termbox-go/terminfo_builtin.go b/vendor/github.com/miguelmota/termbox-go/terminfo_builtin.go
deleted file mode 100644
index a948660..0000000
--- a/vendor/github.com/miguelmota/termbox-go/terminfo_builtin.go
+++ /dev/null
@@ -1,64 +0,0 @@
-// +build !windows
-
-package termbox
-
-// Eterm
-var eterm_keys = []string{
-	"\x1b[11~", "\x1b[12~", "\x1b[13~", "\x1b[14~", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[7~", "\x1b[8~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
-}
-var eterm_funcs = []string{
-	"\x1b7\x1b[?47h", "\x1b[2J\x1b[?47l\x1b8", "\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b[m\x0f", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "", "", "", "",
-}
-
-// screen
-var screen_keys = []string{
-	"\x1bOP", "\x1bOQ", "\x1bOR", "\x1bOS", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[1~", "\x1b[4~", "\x1b[5~", "\x1b[6~", "\x1bOA", "\x1bOB", "\x1bOD", "\x1bOC",
-}
-var screen_funcs = []string{
-	"\x1b[?1049h", "\x1b[?1049l", "\x1b[34h\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[J", "\x1b[m\x0f", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b[?1h\x1b=", "\x1b[?1l\x1b>", ti_mouse_enter, ti_mouse_leave,
-}
-
-// xterm
-var xterm_keys = []string{
-	"\x1bOP", "\x1bOQ", "\x1bOR", "\x1bOS", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1bOH", "\x1bOF", "\x1b[5~", "\x1b[6~", "\x1bOA", "\x1bOB", "\x1bOD", "\x1bOC",
-}
-var xterm_funcs = []string{
-	"\x1b[?1049h", "\x1b[?1049l", "\x1b[?12l\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b(B\x1b[m", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b[?1h\x1b=", "\x1b[?1l\x1b>", ti_mouse_enter, ti_mouse_leave,
-}
-
-// rxvt-unicode
-var rxvt_unicode_keys = []string{
-	"\x1b[11~", "\x1b[12~", "\x1b[13~", "\x1b[14~", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[7~", "\x1b[8~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
-}
-var rxvt_unicode_funcs = []string{
-	"\x1b[?1049h", "\x1b[r\x1b[?1049l", "\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b[m\x1b(B", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b=", "\x1b>", ti_mouse_enter, ti_mouse_leave,
-}
-
-// linux
-var linux_keys = []string{
-	"\x1b[[A", "\x1b[[B", "\x1b[[C", "\x1b[[D", "\x1b[[E", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[1~", "\x1b[4~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
-}
-var linux_funcs = []string{
-	"", "", "\x1b[?25h\x1b[?0c", "\x1b[?25l\x1b[?1c", "\x1b[H\x1b[J", "\x1b[0;10m", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "", "", "", "",
-}
-
-// rxvt-256color
-var rxvt_256color_keys = []string{
-	"\x1b[11~", "\x1b[12~", "\x1b[13~", "\x1b[14~", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[7~", "\x1b[8~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
-}
-var rxvt_256color_funcs = []string{
-	"\x1b7\x1b[?47h", "\x1b[2J\x1b[?47l\x1b8", "\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b[m\x0f", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b=", "\x1b>", ti_mouse_enter, ti_mouse_leave,
-}
-
-var terms = []struct {
-	name  string
-	keys  []string
-	funcs []string
-}{
-	{"Eterm", eterm_keys, eterm_funcs},
-	{"screen", screen_keys, screen_funcs},
-	{"xterm", xterm_keys, xterm_funcs},
-	{"rxvt-unicode", rxvt_unicode_keys, rxvt_unicode_funcs},
-	{"linux", linux_keys, linux_funcs},
-	{"rxvt-256color", rxvt_256color_keys, rxvt_256color_funcs},
-}
diff --git a/vendor/golang.org/x/sys/plan9/asm.s b/vendor/golang.org/x/sys/plan9/asm.s
new file mode 100644
index 0000000..06449eb
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/asm.s
@@ -0,0 +1,8 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+TEXT ·use(SB),NOSPLIT,$0
+	RET
diff --git a/vendor/golang.org/x/sys/plan9/asm_plan9_386.s b/vendor/golang.org/x/sys/plan9/asm_plan9_386.s
new file mode 100644
index 0000000..bc5cab1
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/asm_plan9_386.s
@@ -0,0 +1,30 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+//
+// System call support for 386, Plan 9
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT	·Syscall(SB),NOSPLIT,$0-32
+	JMP	syscall·Syscall(SB)
+
+TEXT	·Syscall6(SB),NOSPLIT,$0-44
+	JMP	syscall·Syscall6(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+	JMP	syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+	JMP	syscall·RawSyscall6(SB)
+
+TEXT ·seek(SB),NOSPLIT,$0-36
+	JMP	syscall·seek(SB)
+
+TEXT ·exit(SB),NOSPLIT,$4-4
+	JMP	syscall·exit(SB)
diff --git a/vendor/golang.org/x/sys/plan9/asm_plan9_amd64.s b/vendor/golang.org/x/sys/plan9/asm_plan9_amd64.s
new file mode 100644
index 0000000..d3448e6
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/asm_plan9_amd64.s
@@ -0,0 +1,30 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+//
+// System call support for amd64, Plan 9
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT	·Syscall(SB),NOSPLIT,$0-64
+	JMP	syscall·Syscall(SB)
+
+TEXT	·Syscall6(SB),NOSPLIT,$0-88
+	JMP	syscall·Syscall6(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+	JMP	syscall·RawSyscall(SB)
+
+TEXT	·RawSyscall6(SB),NOSPLIT,$0-80
+	JMP	syscall·RawSyscall6(SB)
+
+TEXT ·seek(SB),NOSPLIT,$0-56
+	JMP	syscall·seek(SB)
+
+TEXT ·exit(SB),NOSPLIT,$8-8
+	JMP	syscall·exit(SB)
diff --git a/vendor/golang.org/x/sys/plan9/asm_plan9_arm.s b/vendor/golang.org/x/sys/plan9/asm_plan9_arm.s
new file mode 100644
index 0000000..afb7c0a
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/asm_plan9_arm.s
@@ -0,0 +1,25 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// System call support for plan9 on arm
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-32
+	JMP	syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-44
+	JMP	syscall·Syscall6(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+	JMP	syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+	JMP	syscall·RawSyscall6(SB)
+
+TEXT ·seek(SB),NOSPLIT,$0-36
+	JMP	syscall·exit(SB)
diff --git a/vendor/golang.org/x/sys/plan9/const_plan9.go b/vendor/golang.org/x/sys/plan9/const_plan9.go
new file mode 100644
index 0000000..b4e85a3
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/const_plan9.go
@@ -0,0 +1,70 @@
+package plan9
+
+// Plan 9 Constants
+
+// Open modes
+const (
+	O_RDONLY  = 0
+	O_WRONLY  = 1
+	O_RDWR    = 2
+	O_TRUNC   = 16
+	O_CLOEXEC = 32
+	O_EXCL    = 0x1000
+)
+
+// Rfork flags
+const (
+	RFNAMEG  = 1 << 0
+	RFENVG   = 1 << 1
+	RFFDG    = 1 << 2
+	RFNOTEG  = 1 << 3
+	RFPROC   = 1 << 4
+	RFMEM    = 1 << 5
+	RFNOWAIT = 1 << 6
+	RFCNAMEG = 1 << 10
+	RFCENVG  = 1 << 11
+	RFCFDG   = 1 << 12
+	RFREND   = 1 << 13
+	RFNOMNT  = 1 << 14
+)
+
+// Qid.Type bits
+const (
+	QTDIR    = 0x80
+	QTAPPEND = 0x40
+	QTEXCL   = 0x20
+	QTMOUNT  = 0x10
+	QTAUTH   = 0x08
+	QTTMP    = 0x04
+	QTFILE   = 0x00
+)
+
+// Dir.Mode bits
+const (
+	DMDIR    = 0x80000000
+	DMAPPEND = 0x40000000
+	DMEXCL   = 0x20000000
+	DMMOUNT  = 0x10000000
+	DMAUTH   = 0x08000000
+	DMTMP    = 0x04000000
+	DMREAD   = 0x4
+	DMWRITE  = 0x2
+	DMEXEC   = 0x1
+)
+
+const (
+	STATMAX    = 65535
+	ERRMAX     = 128
+	STATFIXLEN = 49
+)
+
+// Mount and bind flags
+const (
+	MREPL   = 0x0000
+	MBEFORE = 0x0001
+	MAFTER  = 0x0002
+	MORDER  = 0x0003
+	MCREATE = 0x0004
+	MCACHE  = 0x0010
+	MMASK   = 0x0017
+)
diff --git a/vendor/golang.org/x/sys/plan9/dir_plan9.go b/vendor/golang.org/x/sys/plan9/dir_plan9.go
new file mode 100644
index 0000000..0955e0c
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/dir_plan9.go
@@ -0,0 +1,212 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Plan 9 directory marshalling. See intro(5).
+
+package plan9
+
+import "errors"
+
+var (
+	ErrShortStat = errors.New("stat buffer too short")
+	ErrBadStat   = errors.New("malformed stat buffer")
+	ErrBadName   = errors.New("bad character in file name")
+)
+
+// A Qid represents a 9P server's unique identification for a file.
+type Qid struct {
+	Path uint64 // the file server's unique identification for the file
+	Vers uint32 // version number for given Path
+	Type uint8  // the type of the file (plan9.QTDIR for example)
+}
+
+// A Dir contains the metadata for a file.
+type Dir struct {
+	// system-modified data
+	Type uint16 // server type
+	Dev  uint32 // server subtype
+
+	// file data
+	Qid    Qid    // unique id from server
+	Mode   uint32 // permissions
+	Atime  uint32 // last read time
+	Mtime  uint32 // last write time
+	Length int64  // file length
+	Name   string // last element of path
+	Uid    string // owner name
+	Gid    string // group name
+	Muid   string // last modifier name
+}
+
+var nullDir = Dir{
+	Type: ^uint16(0),
+	Dev:  ^uint32(0),
+	Qid: Qid{
+		Path: ^uint64(0),
+		Vers: ^uint32(0),
+		Type: ^uint8(0),
+	},
+	Mode:   ^uint32(0),
+	Atime:  ^uint32(0),
+	Mtime:  ^uint32(0),
+	Length: ^int64(0),
+}
+
+// Null assigns special "don't touch" values to members of d to
+// avoid modifying them during plan9.Wstat.
+func (d *Dir) Null() { *d = nullDir }
+
+// Marshal encodes a 9P stat message corresponding to d into b
+//
+// If there isn't enough space in b for a stat message, ErrShortStat is returned.
+func (d *Dir) Marshal(b []byte) (n int, err error) {
+	n = STATFIXLEN + len(d.Name) + len(d.Uid) + len(d.Gid) + len(d.Muid)
+	if n > len(b) {
+		return n, ErrShortStat
+	}
+
+	for _, c := range d.Name {
+		if c == '/' {
+			return n, ErrBadName
+		}
+	}
+
+	b = pbit16(b, uint16(n)-2)
+	b = pbit16(b, d.Type)
+	b = pbit32(b, d.Dev)
+	b = pbit8(b, d.Qid.Type)
+	b = pbit32(b, d.Qid.Vers)
+	b = pbit64(b, d.Qid.Path)
+	b = pbit32(b, d.Mode)
+	b = pbit32(b, d.Atime)
+	b = pbit32(b, d.Mtime)
+	b = pbit64(b, uint64(d.Length))
+	b = pstring(b, d.Name)
+	b = pstring(b, d.Uid)
+	b = pstring(b, d.Gid)
+	b = pstring(b, d.Muid)
+
+	return n, nil
+}
+
+// UnmarshalDir decodes a single 9P stat message from b and returns the resulting Dir.
+//
+// If b is too small to hold a valid stat message, ErrShortStat is returned.
+//
+// If the stat message itself is invalid, ErrBadStat is returned.
+func UnmarshalDir(b []byte) (*Dir, error) {
+	if len(b) < STATFIXLEN {
+		return nil, ErrShortStat
+	}
+	size, buf := gbit16(b)
+	if len(b) != int(size)+2 {
+		return nil, ErrBadStat
+	}
+	b = buf
+
+	var d Dir
+	d.Type, b = gbit16(b)
+	d.Dev, b = gbit32(b)
+	d.Qid.Type, b = gbit8(b)
+	d.Qid.Vers, b = gbit32(b)
+	d.Qid.Path, b = gbit64(b)
+	d.Mode, b = gbit32(b)
+	d.Atime, b = gbit32(b)
+	d.Mtime, b = gbit32(b)
+
+	n, b := gbit64(b)
+	d.Length = int64(n)
+
+	var ok bool
+	if d.Name, b, ok = gstring(b); !ok {
+		return nil, ErrBadStat
+	}
+	if d.Uid, b, ok = gstring(b); !ok {
+		return nil, ErrBadStat
+	}
+	if d.Gid, b, ok = gstring(b); !ok {
+		return nil, ErrBadStat
+	}
+	if d.Muid, b, ok = gstring(b); !ok {
+		return nil, ErrBadStat
+	}
+
+	return &d, nil
+}
+
+// pbit8 copies the 8-bit number v to b and returns the remaining slice of b.
+func pbit8(b []byte, v uint8) []byte {
+	b[0] = byte(v)
+	return b[1:]
+}
+
+// pbit16 copies the 16-bit number v to b in little-endian order and returns the remaining slice of b.
+func pbit16(b []byte, v uint16) []byte {
+	b[0] = byte(v)
+	b[1] = byte(v >> 8)
+	return b[2:]
+}
+
+// pbit32 copies the 32-bit number v to b in little-endian order and returns the remaining slice of b.
+func pbit32(b []byte, v uint32) []byte {
+	b[0] = byte(v)
+	b[1] = byte(v >> 8)
+	b[2] = byte(v >> 16)
+	b[3] = byte(v >> 24)
+	return b[4:]
+}
+
+// pbit64 copies the 64-bit number v to b in little-endian order and returns the remaining slice of b.
+func pbit64(b []byte, v uint64) []byte {
+	b[0] = byte(v)
+	b[1] = byte(v >> 8)
+	b[2] = byte(v >> 16)
+	b[3] = byte(v >> 24)
+	b[4] = byte(v >> 32)
+	b[5] = byte(v >> 40)
+	b[6] = byte(v >> 48)
+	b[7] = byte(v >> 56)
+	return b[8:]
+}
+
+// pstring copies the string s to b, prepending it with a 16-bit length in little-endian order, and
+// returning the remaining slice of b..
+func pstring(b []byte, s string) []byte {
+	b = pbit16(b, uint16(len(s)))
+	n := copy(b, s)
+	return b[n:]
+}
+
+// gbit8 reads an 8-bit number from b and returns it with the remaining slice of b.
+func gbit8(b []byte) (uint8, []byte) {
+	return uint8(b[0]), b[1:]
+}
+
+// gbit16 reads a 16-bit number in little-endian order from b and returns it with the remaining slice of b.
+func gbit16(b []byte) (uint16, []byte) {
+	return uint16(b[0]) | uint16(b[1])<<8, b[2:]
+}
+
+// gbit32 reads a 32-bit number in little-endian order from b and returns it with the remaining slice of b.
+func gbit32(b []byte) (uint32, []byte) {
+	return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24, b[4:]
+}
+
+// gbit64 reads a 64-bit number in little-endian order from b and returns it with the remaining slice of b.
+func gbit64(b []byte) (uint64, []byte) {
+	lo := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
+	hi := uint32(b[4]) | uint32(b[5])<<8 | uint32(b[6])<<16 | uint32(b[7])<<24
+	return uint64(lo) | uint64(hi)<<32, b[8:]
+}
+
+// gstring reads a string from b, prefixed with a 16-bit length in little-endian order.
+// It returns the string with the remaining slice of b and a boolean. If the length is
+// greater than the number of bytes in b, the boolean will be false.
+func gstring(b []byte) (string, []byte, bool) {
+	n, b := gbit16(b)
+	if int(n) > len(b) {
+		return "", b, false
+	}
+	return string(b[:n]), b[n:], true
+}
diff --git a/vendor/golang.org/x/sys/plan9/env_plan9.go b/vendor/golang.org/x/sys/plan9/env_plan9.go
new file mode 100644
index 0000000..8f19180
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/env_plan9.go
@@ -0,0 +1,31 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Plan 9 environment variables.
+
+package plan9
+
+import (
+	"syscall"
+)
+
+func Getenv(key string) (value string, found bool) {
+	return syscall.Getenv(key)
+}
+
+func Setenv(key, value string) error {
+	return syscall.Setenv(key, value)
+}
+
+func Clearenv() {
+	syscall.Clearenv()
+}
+
+func Environ() []string {
+	return syscall.Environ()
+}
+
+func Unsetenv(key string) error {
+	return syscall.Unsetenv(key)
+}
diff --git a/vendor/golang.org/x/sys/plan9/errors_plan9.go b/vendor/golang.org/x/sys/plan9/errors_plan9.go
new file mode 100644
index 0000000..65fe74d
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/errors_plan9.go
@@ -0,0 +1,50 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package plan9
+
+import "syscall"
+
+// Constants
+const (
+	// Invented values to support what package os expects.
+	O_CREAT    = 0x02000
+	O_APPEND   = 0x00400
+	O_NOCTTY   = 0x00000
+	O_NONBLOCK = 0x00000
+	O_SYNC     = 0x00000
+	O_ASYNC    = 0x00000
+
+	S_IFMT   = 0x1f000
+	S_IFIFO  = 0x1000
+	S_IFCHR  = 0x2000
+	S_IFDIR  = 0x4000
+	S_IFBLK  = 0x6000
+	S_IFREG  = 0x8000
+	S_IFLNK  = 0xa000
+	S_IFSOCK = 0xc000
+)
+
+// Errors
+var (
+	EINVAL       = syscall.NewError("bad arg in system call")
+	ENOTDIR      = syscall.NewError("not a directory")
+	EISDIR       = syscall.NewError("file is a directory")
+	ENOENT       = syscall.NewError("file does not exist")
+	EEXIST       = syscall.NewError("file already exists")
+	EMFILE       = syscall.NewError("no free file descriptors")
+	EIO          = syscall.NewError("i/o error")
+	ENAMETOOLONG = syscall.NewError("file name too long")
+	EINTR        = syscall.NewError("interrupted")
+	EPERM        = syscall.NewError("permission denied")
+	EBUSY        = syscall.NewError("no free devices")
+	ETIMEDOUT    = syscall.NewError("connection timed out")
+	EPLAN9       = syscall.NewError("not supported by plan 9")
+
+	// The following errors do not correspond to any
+	// Plan 9 system messages. Invented to support
+	// what package os and others expect.
+	EACCES       = syscall.NewError("access permission denied")
+	EAFNOSUPPORT = syscall.NewError("address family not supported by protocol")
+)
diff --git a/vendor/golang.org/x/sys/plan9/mkall.sh b/vendor/golang.org/x/sys/plan9/mkall.sh
new file mode 100644
index 0000000..1650fbc
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/mkall.sh
@@ -0,0 +1,150 @@
+#!/usr/bin/env bash
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# The plan9 package provides access to the raw system call
+# interface of the underlying operating system.  Porting Go to
+# a new architecture/operating system combination requires
+# some manual effort, though there are tools that automate
+# much of the process.  The auto-generated files have names
+# beginning with z.
+#
+# This script runs or (given -n) prints suggested commands to generate z files
+# for the current system.  Running those commands is not automatic.
+# This script is documentation more than anything else.
+#
+# * asm_${GOOS}_${GOARCH}.s
+#
+# This hand-written assembly file implements system call dispatch.
+# There are three entry points:
+#
+# 	func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
+# 	func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
+# 	func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
+#
+# The first and second are the standard ones; they differ only in
+# how many arguments can be passed to the kernel.
+# The third is for low-level use by the ForkExec wrapper;
+# unlike the first two, it does not call into the scheduler to
+# let it know that a system call is running.
+#
+# * syscall_${GOOS}.go
+#
+# This hand-written Go file implements system calls that need
+# special handling and lists "//sys" comments giving prototypes
+# for ones that can be auto-generated.  Mksyscall reads those
+# comments to generate the stubs.
+#
+# * syscall_${GOOS}_${GOARCH}.go
+#
+# Same as syscall_${GOOS}.go except that it contains code specific
+# to ${GOOS} on one particular architecture.
+#
+# * types_${GOOS}.c
+#
+# This hand-written C file includes standard C headers and then
+# creates typedef or enum names beginning with a dollar sign
+# (use of $ in variable names is a gcc extension).  The hardest
+# part about preparing this file is figuring out which headers to
+# include and which symbols need to be #defined to get the
+# actual data structures that pass through to the kernel system calls.
+# Some C libraries present alternate versions for binary compatibility
+# and translate them on the way in and out of system calls, but
+# there is almost always a #define that can get the real ones.
+# See types_darwin.c and types_linux.c for examples.
+#
+# * zerror_${GOOS}_${GOARCH}.go
+#
+# This machine-generated file defines the system's error numbers,
+# error strings, and signal numbers.  The generator is "mkerrors.sh".
+# Usually no arguments are needed, but mkerrors.sh will pass its
+# arguments on to godefs.
+#
+# * zsyscall_${GOOS}_${GOARCH}.go
+#
+# Generated by mksyscall.pl; see syscall_${GOOS}.go above.
+#
+# * zsysnum_${GOOS}_${GOARCH}.go
+#
+# Generated by mksysnum_${GOOS}.
+#
+# * ztypes_${GOOS}_${GOARCH}.go
+#
+# Generated by godefs; see types_${GOOS}.c above.
+
+GOOSARCH="${GOOS}_${GOARCH}"
+
+# defaults
+mksyscall="go run mksyscall.go"
+mkerrors="./mkerrors.sh"
+zerrors="zerrors_$GOOSARCH.go"
+mksysctl=""
+zsysctl="zsysctl_$GOOSARCH.go"
+mksysnum=
+mktypes=
+run="sh"
+
+case "$1" in
+-syscalls)
+	for i in zsyscall*go
+	do
+		sed 1q $i | sed 's;^// ;;' | sh > _$i && gofmt < _$i > $i
+		rm _$i
+	done
+	exit 0
+	;;
+-n)
+	run="cat"
+	shift
+esac
+
+case "$#" in
+0)
+	;;
+*)
+	echo 'usage: mkall.sh [-n]' 1>&2
+	exit 2
+esac
+
+case "$GOOSARCH" in
+_* | *_ | _)
+	echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
+	exit 1
+	;;
+plan9_386)
+	mkerrors=
+	mksyscall="go run mksyscall.go -l32 -plan9 -tags plan9,386"
+	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"
+	mktypes="XXX"
+	;;
+plan9_amd64)
+	mkerrors=
+	mksyscall="go run mksyscall.go -l32 -plan9 -tags plan9,amd64"
+	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"
+	mktypes="XXX"
+	;;
+plan9_arm)
+	mkerrors=
+	mksyscall="go run mksyscall.go -l32 -plan9 -tags plan9,arm"
+	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"
+	mktypes="XXX"
+	;;
+*)
+	echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2
+	exit 1
+	;;
+esac
+
+(
+	if [ -n "$mkerrors" ]; then echo "$mkerrors |gofmt >$zerrors"; fi
+	case "$GOOS" in
+	plan9)
+		syscall_goos="syscall_$GOOS.go"
+		if [ -n "$mksyscall" ]; then echo "$mksyscall $syscall_goos |gofmt >zsyscall_$GOOSARCH.go"; fi
+		;;
+	esac
+	if [ -n "$mksysctl" ]; then echo "$mksysctl |gofmt >$zsysctl"; fi
+	if [ -n "$mksysnum" ]; then echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"; fi
+	if [ -n "$mktypes" ]; then echo "$mktypes types_$GOOS.go |gofmt >ztypes_$GOOSARCH.go"; fi
+) | $run
diff --git a/vendor/golang.org/x/sys/plan9/mkerrors.sh b/vendor/golang.org/x/sys/plan9/mkerrors.sh
new file mode 100644
index 0000000..85309c4
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/mkerrors.sh
@@ -0,0 +1,246 @@
+#!/usr/bin/env bash
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# Generate Go code listing errors and other #defined constant
+# values (ENAMETOOLONG etc.), by asking the preprocessor
+# about the definitions.
+
+unset LANG
+export LC_ALL=C
+export LC_CTYPE=C
+
+CC=${CC:-gcc}
+
+uname=$(uname)
+
+includes='
+#include <sys/types.h>
+#include <sys/file.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet/tcp.h>
+#include <errno.h>
+#include <sys/signal.h>
+#include <signal.h>
+#include <sys/resource.h>
+'
+
+ccflags="$@"
+
+# Write go tool cgo -godefs input.
+(
+	echo package plan9
+	echo
+	echo '/*'
+	indirect="includes_$(uname)"
+	echo "${!indirect} $includes"
+	echo '*/'
+	echo 'import "C"'
+	echo
+	echo 'const ('
+
+	# The gcc command line prints all the #defines
+	# it encounters while processing the input
+	echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
+	awk '
+		$1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
+
+		$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next}  # 386 registers
+		$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
+		$2 ~ /^(SCM_SRCRT)$/ {next}
+		$2 ~ /^(MAP_FAILED)$/ {next}
+
+		$2 !~ /^ETH_/ &&
+		$2 !~ /^EPROC_/ &&
+		$2 !~ /^EQUIV_/ &&
+		$2 !~ /^EXPR_/ &&
+		$2 ~ /^E[A-Z0-9_]+$/ ||
+		$2 ~ /^B[0-9_]+$/ ||
+		$2 ~ /^V[A-Z0-9]+$/ ||
+		$2 ~ /^CS[A-Z0-9]/ ||
+		$2 ~ /^I(SIG|CANON|CRNL|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
+		$2 ~ /^IGN/ ||
+		$2 ~ /^IX(ON|ANY|OFF)$/ ||
+		$2 ~ /^IN(LCR|PCK)$/ ||
+		$2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
+		$2 ~ /^C(LOCAL|READ)$/ ||
+		$2 == "BRKINT" ||
+		$2 == "HUPCL" ||
+		$2 == "PENDIN" ||
+		$2 == "TOSTOP" ||
+		$2 ~ /^PAR/ ||
+		$2 ~ /^SIG[^_]/ ||
+		$2 ~ /^O[CNPFP][A-Z]+[^_][A-Z]+$/ ||
+		$2 ~ /^IN_/ ||
+		$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
+		$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
+		$2 == "ICMPV6_FILTER" ||
+		$2 == "SOMAXCONN" ||
+		$2 == "NAME_MAX" ||
+		$2 == "IFNAMSIZ" ||
+		$2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ ||
+		$2 ~ /^SYSCTL_VERS/ ||
+		$2 ~ /^(MS|MNT)_/ ||
+		$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
+		$2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ ||
+		$2 ~ /^LINUX_REBOOT_CMD_/ ||
+		$2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
+		$2 !~ "NLA_TYPE_MASK" &&
+		$2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ ||
+		$2 ~ /^SIOC/ ||
+		$2 ~ /^TIOC/ ||
+		$2 !~ "RTF_BITS" &&
+		$2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
+		$2 ~ /^BIOC/ ||
+		$2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
+		$2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ ||
+		$2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
+		$2 ~ /^CLONE_[A-Z_]+/ ||
+		$2 !~ /^(BPF_TIMEVAL)$/ &&
+		$2 ~ /^(BPF|DLT)_/ ||
+		$2 !~ "WMESGLEN" &&
+		$2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)}
+		$2 ~ /^__WCOREFLAG$/ {next}
+		$2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
+
+		{next}
+	' | sort
+
+	echo ')'
+) >_const.go
+
+# Pull out the error names for later.
+errors=$(
+	echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
+	awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
+	sort
+)
+
+# Pull out the signal names for later.
+signals=$(
+	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
+	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
+	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
+	sort
+)
+
+# Again, writing regexps to a file.
+echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
+	awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
+	sort >_error.grep
+echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
+	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
+	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
+	sort >_signal.grep
+
+echo '// mkerrors.sh' "$@"
+echo '// Code generated by the command above; DO NOT EDIT.'
+echo
+go tool cgo -godefs -- "$@" _const.go >_error.out
+cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
+echo
+echo '// Errors'
+echo 'const ('
+cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= Errno(\1)/'
+echo ')'
+
+echo
+echo '// Signals'
+echo 'const ('
+cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= Signal(\1)/'
+echo ')'
+
+# Run C program to print error and syscall strings.
+(
+	echo -E "
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <ctype.h>
+#include <string.h>
+#include <signal.h>
+
+#define nelem(x) (sizeof(x)/sizeof((x)[0]))
+
+enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
+
+int errors[] = {
+"
+	for i in $errors
+	do
+		echo -E '	'$i,
+	done
+
+	echo -E "
+};
+
+int signals[] = {
+"
+	for i in $signals
+	do
+		echo -E '	'$i,
+	done
+
+	# Use -E because on some systems bash builtin interprets \n itself.
+	echo -E '
+};
+
+static int
+intcmp(const void *a, const void *b)
+{
+	return *(int*)a - *(int*)b;
+}
+
+int
+main(void)
+{
+	int i, j, e;
+	char buf[1024], *p;
+
+	printf("\n\n// Error table\n");
+	printf("var errors = [...]string {\n");
+	qsort(errors, nelem(errors), sizeof errors[0], intcmp);
+	for(i=0; i<nelem(errors); i++) {
+		e = errors[i];
+		if(i > 0 && errors[i-1] == e)
+			continue;
+		strcpy(buf, strerror(e));
+		// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
+		if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
+			buf[0] += a - A;
+		printf("\t%d: \"%s\",\n", e, buf);
+	}
+	printf("}\n\n");
+	
+	printf("\n\n// Signal table\n");
+	printf("var signals = [...]string {\n");
+	qsort(signals, nelem(signals), sizeof signals[0], intcmp);
+	for(i=0; i<nelem(signals); i++) {
+		e = signals[i];
+		if(i > 0 && signals[i-1] == e)
+			continue;
+		strcpy(buf, strsignal(e));
+		// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
+		if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
+			buf[0] += a - A;
+		// cut trailing : number.
+		p = strrchr(buf, ":"[0]);
+		if(p)
+			*p = '\0';
+		printf("\t%d: \"%s\",\n", e, buf);
+	}
+	printf("}\n\n");
+
+	return 0;
+}
+
+'
+) >_errors.c
+
+$CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out
diff --git a/vendor/golang.org/x/sys/plan9/mksysnum_plan9.sh b/vendor/golang.org/x/sys/plan9/mksysnum_plan9.sh
new file mode 100644
index 0000000..3c3ab05
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/mksysnum_plan9.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+COMMAND="mksysnum_plan9.sh $@"
+
+cat <<EOF
+// $COMMAND
+// MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
+
+package plan9
+
+const(
+EOF
+
+SP='[ 	]' # space or tab
+sed "s/^#define${SP}\\([A-Z0-9_][A-Z0-9_]*\\)${SP}${SP}*\\([0-9][0-9]*\\)/SYS_\\1=\\2/g" \
+	< $1 | grep -v SYS__
+
+cat <<EOF
+)
+EOF
diff --git a/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go b/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go
new file mode 100644
index 0000000..87ae9d2
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go
@@ -0,0 +1,21 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.5
+
+package plan9
+
+import "syscall"
+
+func fixwd() {
+	syscall.Fixwd()
+}
+
+func Getwd() (wd string, err error) {
+	return syscall.Getwd()
+}
+
+func Chdir(path string) error {
+	return syscall.Chdir(path)
+}
diff --git a/vendor/golang.org/x/sys/plan9/pwd_plan9.go b/vendor/golang.org/x/sys/plan9/pwd_plan9.go
new file mode 100644
index 0000000..c07c798
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/pwd_plan9.go
@@ -0,0 +1,23 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.5
+
+package plan9
+
+func fixwd() {
+}
+
+func Getwd() (wd string, err error) {
+	fd, err := open(".", O_RDONLY)
+	if err != nil {
+		return "", err
+	}
+	defer Close(fd)
+	return Fd2path(fd)
+}
+
+func Chdir(path string) error {
+	return chdir(path)
+}
diff --git a/vendor/golang.org/x/sys/plan9/race.go b/vendor/golang.org/x/sys/plan9/race.go
new file mode 100644
index 0000000..42edd93
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/race.go
@@ -0,0 +1,30 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build plan9,race
+
+package plan9
+
+import (
+	"runtime"
+	"unsafe"
+)
+
+const raceenabled = true
+
+func raceAcquire(addr unsafe.Pointer) {
+	runtime.RaceAcquire(addr)
+}
+
+func raceReleaseMerge(addr unsafe.Pointer) {
+	runtime.RaceReleaseMerge(addr)
+}
+
+func raceReadRange(addr unsafe.Pointer, len int) {
+	runtime.RaceReadRange(addr, len)
+}
+
+func raceWriteRange(addr unsafe.Pointer, len int) {
+	runtime.RaceWriteRange(addr, len)
+}
diff --git a/vendor/golang.org/x/sys/plan9/race0.go b/vendor/golang.org/x/sys/plan9/race0.go
new file mode 100644
index 0000000..c89cf8f
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/race0.go
@@ -0,0 +1,25 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build plan9,!race
+
+package plan9
+
+import (
+	"unsafe"
+)
+
+const raceenabled = false
+
+func raceAcquire(addr unsafe.Pointer) {
+}
+
+func raceReleaseMerge(addr unsafe.Pointer) {
+}
+
+func raceReadRange(addr unsafe.Pointer, len int) {
+}
+
+func raceWriteRange(addr unsafe.Pointer, len int) {
+}
diff --git a/vendor/golang.org/x/sys/plan9/str.go b/vendor/golang.org/x/sys/plan9/str.go
new file mode 100644
index 0000000..4f7f9ad
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/str.go
@@ -0,0 +1,22 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build plan9
+
+package plan9
+
+func itoa(val int) string { // do it here rather than with fmt to avoid dependency
+	if val < 0 {
+		return "-" + itoa(-val)
+	}
+	var buf [32]byte // big enough for int64
+	i := len(buf) - 1
+	for val >= 10 {
+		buf[i] = byte(val%10 + '0')
+		i--
+		val /= 10
+	}
+	buf[i] = byte(val + '0')
+	return string(buf[i:])
+}
diff --git a/vendor/golang.org/x/sys/plan9/syscall.go b/vendor/golang.org/x/sys/plan9/syscall.go
new file mode 100644
index 0000000..e7363a2
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/syscall.go
@@ -0,0 +1,116 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build plan9
+
+// Package plan9 contains an interface to the low-level operating system
+// primitives. OS details vary depending on the underlying system, and
+// by default, godoc will display the OS-specific documentation for the current
+// system. If you want godoc to display documentation for another
+// system, set $GOOS and $GOARCH to the desired system. For example, if
+// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
+// to freebsd and $GOARCH to arm.
+//
+// The primary use of this package is inside other packages that provide a more
+// portable interface to the system, such as "os", "time" and "net".  Use
+// those packages rather than this one if you can.
+//
+// For details of the functions and data types in this package consult
+// the manuals for the appropriate operating system.
+//
+// These calls return err == nil to indicate success; otherwise
+// err represents an operating system error describing the failure and
+// holds a value of type syscall.ErrorString.
+package plan9 // import "golang.org/x/sys/plan9"
+
+import (
+	"bytes"
+	"strings"
+	"unsafe"
+
+	"golang.org/x/sys/internal/unsafeheader"
+)
+
+// ByteSliceFromString returns a NUL-terminated slice of bytes
+// containing the text of s. If s contains a NUL byte at any
+// location, it returns (nil, EINVAL).
+func ByteSliceFromString(s string) ([]byte, error) {
+	if strings.IndexByte(s, 0) != -1 {
+		return nil, EINVAL
+	}
+	a := make([]byte, len(s)+1)
+	copy(a, s)
+	return a, nil
+}
+
+// BytePtrFromString returns a pointer to a NUL-terminated array of
+// bytes containing the text of s. If s contains a NUL byte at any
+// location, it returns (nil, EINVAL).
+func BytePtrFromString(s string) (*byte, error) {
+	a, err := ByteSliceFromString(s)
+	if err != nil {
+		return nil, err
+	}
+	return &a[0], nil
+}
+
+// ByteSliceToString returns a string form of the text represented by the slice s, with a terminating NUL and any
+// bytes after the NUL removed.
+func ByteSliceToString(s []byte) string {
+	if i := bytes.IndexByte(s, 0); i != -1 {
+		s = s[:i]
+	}
+	return string(s)
+}
+
+// BytePtrToString takes a pointer to a sequence of text and returns the corresponding string.
+// If the pointer is nil, it returns the empty string. It assumes that the text sequence is terminated
+// at a zero byte; if the zero byte is not present, the program may crash.
+func BytePtrToString(p *byte) string {
+	if p == nil {
+		return ""
+	}
+	if *p == 0 {
+		return ""
+	}
+
+	// Find NUL terminator.
+	n := 0
+	for ptr := unsafe.Pointer(p); *(*byte)(ptr) != 0; n++ {
+		ptr = unsafe.Pointer(uintptr(ptr) + 1)
+	}
+
+	var s []byte
+	h := (*unsafeheader.Slice)(unsafe.Pointer(&s))
+	h.Data = unsafe.Pointer(p)
+	h.Len = n
+	h.Cap = n
+
+	return string(s)
+}
+
+// Single-word zero for use when we need a valid pointer to 0 bytes.
+// See mksyscall.pl.
+var _zero uintptr
+
+func (ts *Timespec) Unix() (sec int64, nsec int64) {
+	return int64(ts.Sec), int64(ts.Nsec)
+}
+
+func (tv *Timeval) Unix() (sec int64, nsec int64) {
+	return int64(tv.Sec), int64(tv.Usec) * 1000
+}
+
+func (ts *Timespec) Nano() int64 {
+	return int64(ts.Sec)*1e9 + int64(ts.Nsec)
+}
+
+func (tv *Timeval) Nano() int64 {
+	return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
+}
+
+// use is a no-op, but the compiler cannot see that it is.
+// Calling use(p) ensures that p is kept live until that point.
+//go:noescape
+func use(p unsafe.Pointer)
diff --git a/vendor/golang.org/x/sys/plan9/syscall_plan9.go b/vendor/golang.org/x/sys/plan9/syscall_plan9.go
new file mode 100644
index 0000000..84e1471
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/syscall_plan9.go
@@ -0,0 +1,349 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Plan 9 system calls.
+// This file is compiled as ordinary Go code,
+// but it is also input to mksyscall,
+// which parses the //sys lines and generates system call stubs.
+// Note that sometimes we use a lowercase //sys name and
+// wrap it in our own nicer implementation.
+
+package plan9
+
+import (
+	"bytes"
+	"syscall"
+	"unsafe"
+)
+
+// A Note is a string describing a process note.
+// It implements the os.Signal interface.
+type Note string
+
+func (n Note) Signal() {}
+
+func (n Note) String() string {
+	return string(n)
+}
+
+var (
+	Stdin  = 0
+	Stdout = 1
+	Stderr = 2
+)
+
+// For testing: clients can set this flag to force
+// creation of IPv6 sockets to return EAFNOSUPPORT.
+var SocketDisableIPv6 bool
+
+func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.ErrorString)
+func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.ErrorString)
+func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
+func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
+
+func atoi(b []byte) (n uint) {
+	n = 0
+	for i := 0; i < len(b); i++ {
+		n = n*10 + uint(b[i]-'0')
+	}
+	return
+}
+
+func cstring(s []byte) string {
+	i := bytes.IndexByte(s, 0)
+	if i == -1 {
+		i = len(s)
+	}
+	return string(s[:i])
+}
+
+func errstr() string {
+	var buf [ERRMAX]byte
+
+	RawSyscall(SYS_ERRSTR, uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)), 0)
+
+	buf[len(buf)-1] = 0
+	return cstring(buf[:])
+}
+
+// Implemented in assembly to import from runtime.
+func exit(code int)
+
+func Exit(code int) { exit(code) }
+
+func readnum(path string) (uint, error) {
+	var b [12]byte
+
+	fd, e := Open(path, O_RDONLY)
+	if e != nil {
+		return 0, e
+	}
+	defer Close(fd)
+
+	n, e := Pread(fd, b[:], 0)
+
+	if e != nil {
+		return 0, e
+	}
+
+	m := 0
+	for ; m < n && b[m] == ' '; m++ {
+	}
+
+	return atoi(b[m : n-1]), nil
+}
+
+func Getpid() (pid int) {
+	n, _ := readnum("#c/pid")
+	return int(n)
+}
+
+func Getppid() (ppid int) {
+	n, _ := readnum("#c/ppid")
+	return int(n)
+}
+
+func Read(fd int, p []byte) (n int, err error) {
+	return Pread(fd, p, -1)
+}
+
+func Write(fd int, p []byte) (n int, err error) {
+	return Pwrite(fd, p, -1)
+}
+
+var ioSync int64
+
+//sys	fd2path(fd int, buf []byte) (err error)
+func Fd2path(fd int) (path string, err error) {
+	var buf [512]byte
+
+	e := fd2path(fd, buf[:])
+	if e != nil {
+		return "", e
+	}
+	return cstring(buf[:]), nil
+}
+
+//sys	pipe(p *[2]int32) (err error)
+func Pipe(p []int) (err error) {
+	if len(p) != 2 {
+		return syscall.ErrorString("bad arg in system call")
+	}
+	var pp [2]int32
+	err = pipe(&pp)
+	p[0] = int(pp[0])
+	p[1] = int(pp[1])
+	return
+}
+
+// Underlying system call writes to newoffset via pointer.
+// Implemented in assembly to avoid allocation.
+func seek(placeholder uintptr, fd int, offset int64, whence int) (newoffset int64, err string)
+
+func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
+	newoffset, e := seek(0, fd, offset, whence)
+
+	if newoffset == -1 {
+		err = syscall.ErrorString(e)
+	}
+	return
+}
+
+func Mkdir(path string, mode uint32) (err error) {
+	fd, err := Create(path, O_RDONLY, DMDIR|mode)
+
+	if fd != -1 {
+		Close(fd)
+	}
+
+	return
+}
+
+type Waitmsg struct {
+	Pid  int
+	Time [3]uint32
+	Msg  string
+}
+
+func (w Waitmsg) Exited() bool   { return true }
+func (w Waitmsg) Signaled() bool { return false }
+
+func (w Waitmsg) ExitStatus() int {
+	if len(w.Msg) == 0 {
+		// a normal exit returns no message
+		return 0
+	}
+	return 1
+}
+
+//sys	await(s []byte) (n int, err error)
+func Await(w *Waitmsg) (err error) {
+	var buf [512]byte
+	var f [5][]byte
+
+	n, err := await(buf[:])
+
+	if err != nil || w == nil {
+		return
+	}
+
+	nf := 0
+	p := 0
+	for i := 0; i < n && nf < len(f)-1; i++ {
+		if buf[i] == ' ' {
+			f[nf] = buf[p:i]
+			p = i + 1
+			nf++
+		}
+	}
+	f[nf] = buf[p:]
+	nf++
+
+	if nf != len(f) {
+		return syscall.ErrorString("invalid wait message")
+	}
+	w.Pid = int(atoi(f[0]))
+	w.Time[0] = uint32(atoi(f[1]))
+	w.Time[1] = uint32(atoi(f[2]))
+	w.Time[2] = uint32(atoi(f[3]))
+	w.Msg = cstring(f[4])
+	if w.Msg == "''" {
+		// await() returns '' for no error
+		w.Msg = ""
+	}
+	return
+}
+
+func Unmount(name, old string) (err error) {
+	fixwd()
+	oldp, err := BytePtrFromString(old)
+	if err != nil {
+		return err
+	}
+	oldptr := uintptr(unsafe.Pointer(oldp))
+
+	var r0 uintptr
+	var e syscall.ErrorString
+
+	// bind(2) man page: If name is zero, everything bound or mounted upon old is unbound or unmounted.
+	if name == "" {
+		r0, _, e = Syscall(SYS_UNMOUNT, _zero, oldptr, 0)
+	} else {
+		namep, err := BytePtrFromString(name)
+		if err != nil {
+			return err
+		}
+		r0, _, e = Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(namep)), oldptr, 0)
+	}
+
+	if int32(r0) == -1 {
+		err = e
+	}
+	return
+}
+
+func Fchdir(fd int) (err error) {
+	path, err := Fd2path(fd)
+
+	if err != nil {
+		return
+	}
+
+	return Chdir(path)
+}
+
+type Timespec struct {
+	Sec  int32
+	Nsec int32
+}
+
+type Timeval struct {
+	Sec  int32
+	Usec int32
+}
+
+func NsecToTimeval(nsec int64) (tv Timeval) {
+	nsec += 999 // round up to microsecond
+	tv.Usec = int32(nsec % 1e9 / 1e3)
+	tv.Sec = int32(nsec / 1e9)
+	return
+}
+
+func nsec() int64 {
+	var scratch int64
+
+	r0, _, _ := Syscall(SYS_NSEC, uintptr(unsafe.Pointer(&scratch)), 0, 0)
+	// TODO(aram): remove hack after I fix _nsec in the pc64 kernel.
+	if r0 == 0 {
+		return scratch
+	}
+	return int64(r0)
+}
+
+func Gettimeofday(tv *Timeval) error {
+	nsec := nsec()
+	*tv = NsecToTimeval(nsec)
+	return nil
+}
+
+func Getpagesize() int { return 0x1000 }
+
+func Getegid() (egid int) { return -1 }
+func Geteuid() (euid int) { return -1 }
+func Getgid() (gid int)   { return -1 }
+func Getuid() (uid int)   { return -1 }
+
+func Getgroups() (gids []int, err error) {
+	return make([]int, 0), nil
+}
+
+//sys	open(path string, mode int) (fd int, err error)
+func Open(path string, mode int) (fd int, err error) {
+	fixwd()
+	return open(path, mode)
+}
+
+//sys	create(path string, mode int, perm uint32) (fd int, err error)
+func Create(path string, mode int, perm uint32) (fd int, err error) {
+	fixwd()
+	return create(path, mode, perm)
+}
+
+//sys	remove(path string) (err error)
+func Remove(path string) error {
+	fixwd()
+	return remove(path)
+}
+
+//sys	stat(path string, edir []byte) (n int, err error)
+func Stat(path string, edir []byte) (n int, err error) {
+	fixwd()
+	return stat(path, edir)
+}
+
+//sys	bind(name string, old string, flag int) (err error)
+func Bind(name string, old string, flag int) (err error) {
+	fixwd()
+	return bind(name, old, flag)
+}
+
+//sys	mount(fd int, afd int, old string, flag int, aname string) (err error)
+func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
+	fixwd()
+	return mount(fd, afd, old, flag, aname)
+}
+
+//sys	wstat(path string, edir []byte) (err error)
+func Wstat(path string, edir []byte) (err error) {
+	fixwd()
+	return wstat(path, edir)
+}
+
+//sys	chdir(path string) (err error)
+//sys	Dup(oldfd int, newfd int) (fd int, err error)
+//sys	Pread(fd int, p []byte, offset int64) (n int, err error)
+//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
+//sys	Close(fd int) (err error)
+//sys	Fstat(fd int, edir []byte) (n int, err error)
+//sys	Fwstat(fd int, edir []byte) (err error)
diff --git a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go
new file mode 100644
index 0000000..6819bc2
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go
@@ -0,0 +1,284 @@
+// go run mksyscall.go -l32 -plan9 -tags plan9,386 syscall_plan9.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build plan9,386
+
+package plan9
+
+import "unsafe"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func fd2path(fd int, buf []byte) (err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FD2PATH, uintptr(fd), uintptr(_p0), uintptr(len(buf)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func pipe(p *[2]int32) (err error) {
+	r0, _, e1 := Syscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func await(s []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(s) > 0 {
+		_p0 = unsafe.Pointer(&s[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_AWAIT, uintptr(_p0), uintptr(len(s)), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func open(path string, mode int) (fd int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func create(path string, mode int, perm uint32) (fd int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_CREATE, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func remove(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_REMOVE, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func stat(path string, edir []byte) (n int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 unsafe.Pointer
+	if len(edir) > 0 {
+		_p1 = unsafe.Pointer(&edir[0])
+	} else {
+		_p1 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func bind(name string, old string, flag int) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(name)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(old)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func mount(fd int, afd int, old string, flag int, aname string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(old)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(aname)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func wstat(path string, edir []byte) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 unsafe.Pointer
+	if len(edir) > 0 {
+		_p1 = unsafe.Pointer(&edir[0])
+	} else {
+		_p1 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func chdir(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Dup(oldfd int, newfd int) (fd int, err error) {
+	r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Pread(fd int, p []byte, offset int64) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(p) > 0 {
+		_p0 = unsafe.Pointer(&p[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(p) > 0 {
+		_p0 = unsafe.Pointer(&p[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Close(fd int) (err error) {
+	r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Fstat(fd int, edir []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(edir) > 0 {
+		_p0 = unsafe.Pointer(&edir[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Fwstat(fd int, edir []byte) (err error) {
+	var _p0 unsafe.Pointer
+	if len(edir) > 0 {
+		_p0 = unsafe.Pointer(&edir[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FWSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
diff --git a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go
new file mode 100644
index 0000000..418abbb
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go
@@ -0,0 +1,284 @@
+// go run mksyscall.go -l32 -plan9 -tags plan9,amd64 syscall_plan9.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build plan9,amd64
+
+package plan9
+
+import "unsafe"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func fd2path(fd int, buf []byte) (err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FD2PATH, uintptr(fd), uintptr(_p0), uintptr(len(buf)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func pipe(p *[2]int32) (err error) {
+	r0, _, e1 := Syscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func await(s []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(s) > 0 {
+		_p0 = unsafe.Pointer(&s[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_AWAIT, uintptr(_p0), uintptr(len(s)), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func open(path string, mode int) (fd int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func create(path string, mode int, perm uint32) (fd int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_CREATE, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func remove(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_REMOVE, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func stat(path string, edir []byte) (n int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 unsafe.Pointer
+	if len(edir) > 0 {
+		_p1 = unsafe.Pointer(&edir[0])
+	} else {
+		_p1 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func bind(name string, old string, flag int) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(name)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(old)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func mount(fd int, afd int, old string, flag int, aname string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(old)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(aname)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func wstat(path string, edir []byte) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 unsafe.Pointer
+	if len(edir) > 0 {
+		_p1 = unsafe.Pointer(&edir[0])
+	} else {
+		_p1 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func chdir(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Dup(oldfd int, newfd int) (fd int, err error) {
+	r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Pread(fd int, p []byte, offset int64) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(p) > 0 {
+		_p0 = unsafe.Pointer(&p[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(p) > 0 {
+		_p0 = unsafe.Pointer(&p[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Close(fd int) (err error) {
+	r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Fstat(fd int, edir []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(edir) > 0 {
+		_p0 = unsafe.Pointer(&edir[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Fwstat(fd int, edir []byte) (err error) {
+	var _p0 unsafe.Pointer
+	if len(edir) > 0 {
+		_p0 = unsafe.Pointer(&edir[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FWSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
diff --git a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go
new file mode 100644
index 0000000..3e8a1a5
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go
@@ -0,0 +1,284 @@
+// go run mksyscall.go -l32 -plan9 -tags plan9,arm syscall_plan9.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build plan9,arm
+
+package plan9
+
+import "unsafe"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func fd2path(fd int, buf []byte) (err error) {
+	var _p0 unsafe.Pointer
+	if len(buf) > 0 {
+		_p0 = unsafe.Pointer(&buf[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FD2PATH, uintptr(fd), uintptr(_p0), uintptr(len(buf)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func pipe(p *[2]int32) (err error) {
+	r0, _, e1 := Syscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func await(s []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(s) > 0 {
+		_p0 = unsafe.Pointer(&s[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_AWAIT, uintptr(_p0), uintptr(len(s)), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func open(path string, mode int) (fd int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func create(path string, mode int, perm uint32) (fd int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_CREATE, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func remove(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_REMOVE, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func stat(path string, edir []byte) (n int, err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 unsafe.Pointer
+	if len(edir) > 0 {
+		_p1 = unsafe.Pointer(&edir[0])
+	} else {
+		_p1 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func bind(name string, old string, flag int) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(name)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(old)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func mount(fd int, afd int, old string, flag int, aname string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(old)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(aname)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func wstat(path string, edir []byte) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 unsafe.Pointer
+	if len(edir) > 0 {
+		_p1 = unsafe.Pointer(&edir[0])
+	} else {
+		_p1 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func chdir(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Dup(oldfd int, newfd int) (fd int, err error) {
+	r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
+	fd = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Pread(fd int, p []byte, offset int64) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(p) > 0 {
+		_p0 = unsafe.Pointer(&p[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(p) > 0 {
+		_p0 = unsafe.Pointer(&p[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Close(fd int) (err error) {
+	r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Fstat(fd int, edir []byte) (n int, err error) {
+	var _p0 unsafe.Pointer
+	if len(edir) > 0 {
+		_p0 = unsafe.Pointer(&edir[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
+	n = int(r0)
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Fwstat(fd int, edir []byte) (err error) {
+	var _p0 unsafe.Pointer
+	if len(edir) > 0 {
+		_p0 = unsafe.Pointer(&edir[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	r0, _, e1 := Syscall(SYS_FWSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
+	if int32(r0) == -1 {
+		err = e1
+	}
+	return
+}
diff --git a/vendor/golang.org/x/sys/plan9/zsysnum_plan9.go b/vendor/golang.org/x/sys/plan9/zsysnum_plan9.go
new file mode 100644
index 0000000..22e8abd
--- /dev/null
+++ b/vendor/golang.org/x/sys/plan9/zsysnum_plan9.go
@@ -0,0 +1,49 @@
+// mksysnum_plan9.sh /opt/plan9/sys/src/libc/9syscall/sys.h
+// MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
+
+package plan9
+
+const (
+	SYS_SYSR1       = 0
+	SYS_BIND        = 2
+	SYS_CHDIR       = 3
+	SYS_CLOSE       = 4
+	SYS_DUP         = 5
+	SYS_ALARM       = 6
+	SYS_EXEC        = 7
+	SYS_EXITS       = 8
+	SYS_FAUTH       = 10
+	SYS_SEGBRK      = 12
+	SYS_OPEN        = 14
+	SYS_OSEEK       = 16
+	SYS_SLEEP       = 17
+	SYS_RFORK       = 19
+	SYS_PIPE        = 21
+	SYS_CREATE      = 22
+	SYS_FD2PATH     = 23
+	SYS_BRK_        = 24
+	SYS_REMOVE      = 25
+	SYS_NOTIFY      = 28
+	SYS_NOTED       = 29
+	SYS_SEGATTACH   = 30
+	SYS_SEGDETACH   = 31
+	SYS_SEGFREE     = 32
+	SYS_SEGFLUSH    = 33
+	SYS_RENDEZVOUS  = 34
+	SYS_UNMOUNT     = 35
+	SYS_SEMACQUIRE  = 37
+	SYS_SEMRELEASE  = 38
+	SYS_SEEK        = 39
+	SYS_FVERSION    = 40
+	SYS_ERRSTR      = 41
+	SYS_STAT        = 42
+	SYS_FSTAT       = 43
+	SYS_WSTAT       = 44
+	SYS_FWSTAT      = 45
+	SYS_MOUNT       = 46
+	SYS_AWAIT       = 47
+	SYS_PREAD       = 50
+	SYS_PWRITE      = 51
+	SYS_TSEMACQUIRE = 52
+	SYS_NSEC        = 53
+)
diff --git a/vendor/golang.org/x/term/AUTHORS b/vendor/golang.org/x/term/AUTHORS
new file mode 100644
index 0000000..15167cd
--- /dev/null
+++ b/vendor/golang.org/x/term/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/term/CONTRIBUTING.md b/vendor/golang.org/x/term/CONTRIBUTING.md
new file mode 100644
index 0000000..d0485e8
--- /dev/null
+++ b/vendor/golang.org/x/term/CONTRIBUTING.md
@@ -0,0 +1,26 @@
+# Contributing to Go
+
+Go is an open source project.
+
+It is the work of hundreds of contributors. We appreciate your help!
+
+## Filing issues
+
+When [filing an issue](https://golang.org/issue/new), make sure to answer these five questions:
+
+1.  What version of Go are you using (`go version`)?
+2.  What operating system and processor architecture are you using?
+3.  What did you do?
+4.  What did you expect to see?
+5.  What did you see instead?
+
+General questions should go to the [golang-nuts mailing list](https://groups.google.com/group/golang-nuts) instead of the issue tracker.
+The gophers there will answer or ask you to file an issue if you've tripped over a bug.
+
+## Contributing code
+
+Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
+before sending patches.
+
+Unless otherwise noted, the Go source files are distributed under
+the BSD-style license found in the LICENSE file.
diff --git a/vendor/golang.org/x/term/CONTRIBUTORS b/vendor/golang.org/x/term/CONTRIBUTORS
new file mode 100644
index 0000000..1c4577e
--- /dev/null
+++ b/vendor/golang.org/x/term/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/term/LICENSE b/vendor/golang.org/x/term/LICENSE
new file mode 100644
index 0000000..6a66aea
--- /dev/null
+++ b/vendor/golang.org/x/term/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/term/PATENTS b/vendor/golang.org/x/term/PATENTS
new file mode 100644
index 0000000..7330990
--- /dev/null
+++ b/vendor/golang.org/x/term/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/term/README.md b/vendor/golang.org/x/term/README.md
new file mode 100644
index 0000000..d03d0ae
--- /dev/null
+++ b/vendor/golang.org/x/term/README.md
@@ -0,0 +1,19 @@
+# Go terminal/console support
+
+[![Go Reference](https://pkg.go.dev/badge/golang.org/x/term.svg)](https://pkg.go.dev/golang.org/x/term)
+
+This repository provides Go terminal and console support packages.
+
+## Download/Install
+
+The easiest way to install is to run `go get -u golang.org/x/term`. You can
+also manually git clone the repository to `$GOPATH/src/golang.org/x/term`.
+
+## Report Issues / Send Patches
+
+This repository uses Gerrit for code changes. To learn how to submit changes to
+this repository, see https://golang.org/doc/contribute.html.
+
+The main issue tracker for the term repository is located at
+https://github.com/golang/go/issues. Prefix your issue with "x/term:" in the
+subject line, so it is easy to find.
diff --git a/vendor/golang.org/x/term/term.go b/vendor/golang.org/x/term/term.go
new file mode 100644
index 0000000..2a4ccf8
--- /dev/null
+++ b/vendor/golang.org/x/term/term.go
@@ -0,0 +1,58 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package term provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := term.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer term.Restore(0, oldState)
+package term
+
+// State contains the state of a terminal.
+type State struct {
+	state
+}
+
+// IsTerminal returns whether the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	return isTerminal(fd)
+}
+
+// MakeRaw puts the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	return makeRaw(fd)
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	return getState(fd)
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, oldState *State) error {
+	return restore(fd, oldState)
+}
+
+// GetSize returns the visible dimensions of the given terminal.
+//
+// These dimensions don't include any scrollback buffer height.
+func GetSize(fd int) (width, height int, err error) {
+	return getSize(fd)
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	return readPassword(fd)
+}
diff --git a/vendor/golang.org/x/term/term_plan9.go b/vendor/golang.org/x/term/term_plan9.go
new file mode 100644
index 0000000..21afa55
--- /dev/null
+++ b/vendor/golang.org/x/term/term_plan9.go
@@ -0,0 +1,42 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import (
+	"fmt"
+	"runtime"
+
+	"golang.org/x/sys/plan9"
+)
+
+type state struct{}
+
+func isTerminal(fd int) bool {
+	path, err := plan9.Fd2path(fd)
+	if err != nil {
+		return false
+	}
+	return path == "/dev/cons" || path == "/mnt/term/dev/cons"
+}
+
+func makeRaw(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func getState(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: GetState not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func restore(fd int, state *State) error {
+	return fmt.Errorf("terminal: Restore not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func getSize(fd int) (width, height int, err error) {
+	return 0, 0, fmt.Errorf("terminal: GetSize not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func readPassword(fd int) ([]byte, error) {
+	return nil, fmt.Errorf("terminal: ReadPassword not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
diff --git a/vendor/golang.org/x/term/term_solaris.go b/vendor/golang.org/x/term/term_solaris.go
new file mode 100644
index 0000000..b9da297
--- /dev/null
+++ b/vendor/golang.org/x/term/term_solaris.go
@@ -0,0 +1,111 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import (
+	"io"
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+// State contains the state of a terminal.
+type state struct {
+	termios unix.Termios
+}
+
+func isTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
+	return err == nil
+}
+
+func readPassword(fd int) ([]byte, error) {
+	// see also: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
+	val, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+	oldState := *val
+
+	newState := oldState
+	newState.Lflag &^= syscall.ECHO
+	newState.Lflag |= syscall.ICANON | syscall.ISIG
+	newState.Iflag |= syscall.ICRNL
+	err = unix.IoctlSetTermios(fd, unix.TCSETS, &newState)
+	if err != nil {
+		return nil, err
+	}
+
+	defer unix.IoctlSetTermios(fd, unix.TCSETS, &oldState)
+
+	var buf [16]byte
+	var ret []byte
+	for {
+		n, err := syscall.Read(fd, buf[:])
+		if err != nil {
+			return nil, err
+		}
+		if n == 0 {
+			if len(ret) == 0 {
+				return nil, io.EOF
+			}
+			break
+		}
+		if buf[n-1] == '\n' {
+			n--
+		}
+		ret = append(ret, buf[:n]...)
+		if n < len(buf) {
+			break
+		}
+	}
+
+	return ret, nil
+}
+
+func makeRaw(fd int) (*State, error) {
+	// see http://cr.illumos.org/~webrev/andy_js/1060/
+	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+
+	oldState := State{state{termios: *termios}}
+
+	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
+	termios.Oflag &^= unix.OPOST
+	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
+	termios.Cflag &^= unix.CSIZE | unix.PARENB
+	termios.Cflag |= unix.CS8
+	termios.Cc[unix.VMIN] = 1
+	termios.Cc[unix.VTIME] = 0
+
+	if err := unix.IoctlSetTermios(fd, unix.TCSETS, termios); err != nil {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+func restore(fd int, oldState *State) error {
+	return unix.IoctlSetTermios(fd, unix.TCSETS, &oldState.termios)
+}
+
+func getState(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+
+	return &State{state{termios: *termios}}, nil
+}
+
+func getSize(fd int) (width, height int, err error) {
+	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
+	if err != nil {
+		return 0, 0, err
+	}
+	return int(ws.Col), int(ws.Row), nil
+}
diff --git a/vendor/golang.org/x/term/term_unix.go b/vendor/golang.org/x/term/term_unix.go
new file mode 100644
index 0000000..4c60e45
--- /dev/null
+++ b/vendor/golang.org/x/term/term_unix.go
@@ -0,0 +1,91 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd zos
+
+package term
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+type state struct {
+	termios unix.Termios
+}
+
+func isTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	return err == nil
+}
+
+func makeRaw(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
+		return nil, err
+	}
+
+	oldState := State{state{termios: *termios}}
+
+	// This attempts to replicate the behaviour documented for cfmakeraw in
+	// the termios(3) manpage.
+	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
+	termios.Oflag &^= unix.OPOST
+	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
+	termios.Cflag &^= unix.CSIZE | unix.PARENB
+	termios.Cflag |= unix.CS8
+	termios.Cc[unix.VMIN] = 1
+	termios.Cc[unix.VTIME] = 0
+	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, termios); err != nil {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+func getState(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
+		return nil, err
+	}
+
+	return &State{state{termios: *termios}}, nil
+}
+
+func restore(fd int, state *State) error {
+	return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios)
+}
+
+func getSize(fd int) (width, height int, err error) {
+	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
+	if err != nil {
+		return -1, -1, err
+	}
+	return int(ws.Col), int(ws.Row), nil
+}
+
+// passwordReader is an io.Reader that reads from a specific file descriptor.
+type passwordReader int
+
+func (r passwordReader) Read(buf []byte) (int, error) {
+	return unix.Read(int(r), buf)
+}
+
+func readPassword(fd int) ([]byte, error) {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
+		return nil, err
+	}
+
+	newState := *termios
+	newState.Lflag &^= unix.ECHO
+	newState.Lflag |= unix.ICANON | unix.ISIG
+	newState.Iflag |= unix.ICRNL
+	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newState); err != nil {
+		return nil, err
+	}
+
+	defer unix.IoctlSetTermios(fd, ioctlWriteTermios, termios)
+
+	return readPasswordLine(passwordReader(fd))
+}
diff --git a/vendor/golang.org/x/term/term_unix_aix.go b/vendor/golang.org/x/term/term_unix_aix.go
new file mode 100644
index 0000000..2d5efd2
--- /dev/null
+++ b/vendor/golang.org/x/term/term_unix_aix.go
@@ -0,0 +1,10 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS
diff --git a/vendor/golang.org/x/term/term_unix_bsd.go b/vendor/golang.org/x/term/term_unix_bsd.go
new file mode 100644
index 0000000..3342be0
--- /dev/null
+++ b/vendor/golang.org/x/term/term_unix_bsd.go
@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package term
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TIOCGETA
+const ioctlWriteTermios = unix.TIOCSETA
diff --git a/vendor/golang.org/x/term/term_unix_linux.go b/vendor/golang.org/x/term/term_unix_linux.go
new file mode 100644
index 0000000..2d5efd2
--- /dev/null
+++ b/vendor/golang.org/x/term/term_unix_linux.go
@@ -0,0 +1,10 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS
diff --git a/vendor/golang.org/x/term/term_unix_zos.go b/vendor/golang.org/x/term/term_unix_zos.go
new file mode 100644
index 0000000..b85ab89
--- /dev/null
+++ b/vendor/golang.org/x/term/term_unix_zos.go
@@ -0,0 +1,10 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS
diff --git a/vendor/golang.org/x/term/term_unsupported.go b/vendor/golang.org/x/term/term_unsupported.go
new file mode 100644
index 0000000..8b5d1ba
--- /dev/null
+++ b/vendor/golang.org/x/term/term_unsupported.go
@@ -0,0 +1,38 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!zos,!windows,!solaris,!plan9
+
+package term
+
+import (
+	"fmt"
+	"runtime"
+)
+
+type state struct{}
+
+func isTerminal(fd int) bool {
+	return false
+}
+
+func makeRaw(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func getState(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: GetState not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func restore(fd int, state *State) error {
+	return fmt.Errorf("terminal: Restore not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func getSize(fd int) (width, height int, err error) {
+	return 0, 0, fmt.Errorf("terminal: GetSize not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func readPassword(fd int) ([]byte, error) {
+	return nil, fmt.Errorf("terminal: ReadPassword not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
diff --git a/vendor/golang.org/x/term/term_windows.go b/vendor/golang.org/x/term/term_windows.go
new file mode 100644
index 0000000..465f560
--- /dev/null
+++ b/vendor/golang.org/x/term/term_windows.go
@@ -0,0 +1,79 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import (
+	"os"
+
+	"golang.org/x/sys/windows"
+)
+
+type state struct {
+	mode uint32
+}
+
+func isTerminal(fd int) bool {
+	var st uint32
+	err := windows.GetConsoleMode(windows.Handle(fd), &st)
+	return err == nil
+}
+
+func makeRaw(fd int) (*State, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil {
+		return nil, err
+	}
+	return &State{state{st}}, nil
+}
+
+func getState(fd int) (*State, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	return &State{state{st}}, nil
+}
+
+func restore(fd int, state *State) error {
+	return windows.SetConsoleMode(windows.Handle(fd), state.mode)
+}
+
+func getSize(fd int) (width, height int, err error) {
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
+		return 0, 0, err
+	}
+	return int(info.Window.Right - info.Window.Left + 1), int(info.Window.Bottom - info.Window.Top + 1), nil
+}
+
+func readPassword(fd int) ([]byte, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	old := st
+
+	st &^= (windows.ENABLE_ECHO_INPUT | windows.ENABLE_LINE_INPUT)
+	st |= (windows.ENABLE_PROCESSED_OUTPUT | windows.ENABLE_PROCESSED_INPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil {
+		return nil, err
+	}
+
+	defer windows.SetConsoleMode(windows.Handle(fd), old)
+
+	var h windows.Handle
+	p, _ := windows.GetCurrentProcess()
+	if err := windows.DuplicateHandle(p, windows.Handle(fd), p, &h, 0, false, windows.DUPLICATE_SAME_ACCESS); err != nil {
+		return nil, err
+	}
+
+	f := os.NewFile(uintptr(h), "stdin")
+	defer f.Close()
+	return readPasswordLine(f)
+}
diff --git a/vendor/golang.org/x/term/terminal.go b/vendor/golang.org/x/term/terminal.go
new file mode 100644
index 0000000..535ab82
--- /dev/null
+++ b/vendor/golang.org/x/term/terminal.go
@@ -0,0 +1,987 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package term
+
+import (
+	"bytes"
+	"io"
+	"runtime"
+	"strconv"
+	"sync"
+	"unicode/utf8"
+)
+
+// EscapeCodes contains escape sequences that can be written to the terminal in
+// order to achieve different styles of text.
+type EscapeCodes struct {
+	// Foreground colors
+	Black, Red, Green, Yellow, Blue, Magenta, Cyan, White []byte
+
+	// Reset all attributes
+	Reset []byte
+}
+
+var vt100EscapeCodes = EscapeCodes{
+	Black:   []byte{keyEscape, '[', '3', '0', 'm'},
+	Red:     []byte{keyEscape, '[', '3', '1', 'm'},
+	Green:   []byte{keyEscape, '[', '3', '2', 'm'},
+	Yellow:  []byte{keyEscape, '[', '3', '3', 'm'},
+	Blue:    []byte{keyEscape, '[', '3', '4', 'm'},
+	Magenta: []byte{keyEscape, '[', '3', '5', 'm'},
+	Cyan:    []byte{keyEscape, '[', '3', '6', 'm'},
+	White:   []byte{keyEscape, '[', '3', '7', 'm'},
+
+	Reset: []byte{keyEscape, '[', '0', 'm'},
+}
+
+// Terminal contains the state for running a VT100 terminal that is capable of
+// reading lines of input.
+type Terminal struct {
+	// AutoCompleteCallback, if non-null, is called for each keypress with
+	// the full input line and the current position of the cursor (in
+	// bytes, as an index into |line|). If it returns ok=false, the key
+	// press is processed normally. Otherwise it returns a replacement line
+	// and the new cursor position.
+	AutoCompleteCallback func(line string, pos int, key rune) (newLine string, newPos int, ok bool)
+
+	// Escape contains a pointer to the escape codes for this terminal.
+	// It's always a valid pointer, although the escape codes themselves
+	// may be empty if the terminal doesn't support them.
+	Escape *EscapeCodes
+
+	// lock protects the terminal and the state in this object from
+	// concurrent processing of a key press and a Write() call.
+	lock sync.Mutex
+
+	c      io.ReadWriter
+	prompt []rune
+
+	// line is the current line being entered.
+	line []rune
+	// pos is the logical position of the cursor in line
+	pos int
+	// echo is true if local echo is enabled
+	echo bool
+	// pasteActive is true iff there is a bracketed paste operation in
+	// progress.
+	pasteActive bool
+
+	// cursorX contains the current X value of the cursor where the left
+	// edge is 0. cursorY contains the row number where the first row of
+	// the current line is 0.
+	cursorX, cursorY int
+	// maxLine is the greatest value of cursorY so far.
+	maxLine int
+
+	termWidth, termHeight int
+
+	// outBuf contains the terminal data to be sent.
+	outBuf []byte
+	// remainder contains the remainder of any partial key sequences after
+	// a read. It aliases into inBuf.
+	remainder []byte
+	inBuf     [256]byte
+
+	// history contains previously entered commands so that they can be
+	// accessed with the up and down keys.
+	history stRingBuffer
+	// historyIndex stores the currently accessed history entry, where zero
+	// means the immediately previous entry.
+	historyIndex int
+	// When navigating up and down the history it's possible to return to
+	// the incomplete, initial line. That value is stored in
+	// historyPending.
+	historyPending string
+}
+
+// NewTerminal runs a VT100 terminal on the given ReadWriter. If the ReadWriter is
+// a local terminal, that terminal must first have been put into raw mode.
+// prompt is a string that is written at the start of each input line (i.e.
+// "> ").
+func NewTerminal(c io.ReadWriter, prompt string) *Terminal {
+	return &Terminal{
+		Escape:       &vt100EscapeCodes,
+		c:            c,
+		prompt:       []rune(prompt),
+		termWidth:    80,
+		termHeight:   24,
+		echo:         true,
+		historyIndex: -1,
+	}
+}
+
+const (
+	keyCtrlC     = 3
+	keyCtrlD     = 4
+	keyCtrlU     = 21
+	keyEnter     = '\r'
+	keyEscape    = 27
+	keyBackspace = 127
+	keyUnknown   = 0xd800 /* UTF-16 surrogate area */ + iota
+	keyUp
+	keyDown
+	keyLeft
+	keyRight
+	keyAltLeft
+	keyAltRight
+	keyHome
+	keyEnd
+	keyDeleteWord
+	keyDeleteLine
+	keyClearScreen
+	keyPasteStart
+	keyPasteEnd
+)
+
+var (
+	crlf       = []byte{'\r', '\n'}
+	pasteStart = []byte{keyEscape, '[', '2', '0', '0', '~'}
+	pasteEnd   = []byte{keyEscape, '[', '2', '0', '1', '~'}
+)
+
+// bytesToKey tries to parse a key sequence from b. If successful, it returns
+// the key and the remainder of the input. Otherwise it returns utf8.RuneError.
+func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
+	if len(b) == 0 {
+		return utf8.RuneError, nil
+	}
+
+	if !pasteActive {
+		switch b[0] {
+		case 1: // ^A
+			return keyHome, b[1:]
+		case 2: // ^B
+			return keyLeft, b[1:]
+		case 5: // ^E
+			return keyEnd, b[1:]
+		case 6: // ^F
+			return keyRight, b[1:]
+		case 8: // ^H
+			return keyBackspace, b[1:]
+		case 11: // ^K
+			return keyDeleteLine, b[1:]
+		case 12: // ^L
+			return keyClearScreen, b[1:]
+		case 23: // ^W
+			return keyDeleteWord, b[1:]
+		case 14: // ^N
+			return keyDown, b[1:]
+		case 16: // ^P
+			return keyUp, b[1:]
+		}
+	}
+
+	if b[0] != keyEscape {
+		if !utf8.FullRune(b) {
+			return utf8.RuneError, b
+		}
+		r, l := utf8.DecodeRune(b)
+		return r, b[l:]
+	}
+
+	if !pasteActive && len(b) >= 3 && b[0] == keyEscape && b[1] == '[' {
+		switch b[2] {
+		case 'A':
+			return keyUp, b[3:]
+		case 'B':
+			return keyDown, b[3:]
+		case 'C':
+			return keyRight, b[3:]
+		case 'D':
+			return keyLeft, b[3:]
+		case 'H':
+			return keyHome, b[3:]
+		case 'F':
+			return keyEnd, b[3:]
+		}
+	}
+
+	if !pasteActive && len(b) >= 6 && b[0] == keyEscape && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' {
+		switch b[5] {
+		case 'C':
+			return keyAltRight, b[6:]
+		case 'D':
+			return keyAltLeft, b[6:]
+		}
+	}
+
+	if !pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteStart) {
+		return keyPasteStart, b[6:]
+	}
+
+	if pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteEnd) {
+		return keyPasteEnd, b[6:]
+	}
+
+	// If we get here then we have a key that we don't recognise, or a
+	// partial sequence. It's not clear how one should find the end of a
+	// sequence without knowing them all, but it seems that [a-zA-Z~] only
+	// appears at the end of a sequence.
+	for i, c := range b[0:] {
+		if c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '~' {
+			return keyUnknown, b[i+1:]
+		}
+	}
+
+	return utf8.RuneError, b
+}
+
+// queue appends data to the end of t.outBuf
+func (t *Terminal) queue(data []rune) {
+	t.outBuf = append(t.outBuf, []byte(string(data))...)
+}
+
+var eraseUnderCursor = []rune{' ', keyEscape, '[', 'D'}
+var space = []rune{' '}
+
+func isPrintable(key rune) bool {
+	isInSurrogateArea := key >= 0xd800 && key <= 0xdbff
+	return key >= 32 && !isInSurrogateArea
+}
+
+// moveCursorToPos appends data to t.outBuf which will move the cursor to the
+// given, logical position in the text.
+func (t *Terminal) moveCursorToPos(pos int) {
+	if !t.echo {
+		return
+	}
+
+	x := visualLength(t.prompt) + pos
+	y := x / t.termWidth
+	x = x % t.termWidth
+
+	up := 0
+	if y < t.cursorY {
+		up = t.cursorY - y
+	}
+
+	down := 0
+	if y > t.cursorY {
+		down = y - t.cursorY
+	}
+
+	left := 0
+	if x < t.cursorX {
+		left = t.cursorX - x
+	}
+
+	right := 0
+	if x > t.cursorX {
+		right = x - t.cursorX
+	}
+
+	t.cursorX = x
+	t.cursorY = y
+	t.move(up, down, left, right)
+}
+
+func (t *Terminal) move(up, down, left, right int) {
+	m := []rune{}
+
+	// 1 unit up can be expressed as ^[[A or ^[A
+	// 5 units up can be expressed as ^[[5A
+
+	if up == 1 {
+		m = append(m, keyEscape, '[', 'A')
+	} else if up > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(up))...)
+		m = append(m, 'A')
+	}
+
+	if down == 1 {
+		m = append(m, keyEscape, '[', 'B')
+	} else if down > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(down))...)
+		m = append(m, 'B')
+	}
+
+	if right == 1 {
+		m = append(m, keyEscape, '[', 'C')
+	} else if right > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(right))...)
+		m = append(m, 'C')
+	}
+
+	if left == 1 {
+		m = append(m, keyEscape, '[', 'D')
+	} else if left > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(left))...)
+		m = append(m, 'D')
+	}
+
+	t.queue(m)
+}
+
+func (t *Terminal) clearLineToRight() {
+	op := []rune{keyEscape, '[', 'K'}
+	t.queue(op)
+}
+
+const maxLineLength = 4096
+
+func (t *Terminal) setLine(newLine []rune, newPos int) {
+	if t.echo {
+		t.moveCursorToPos(0)
+		t.writeLine(newLine)
+		for i := len(newLine); i < len(t.line); i++ {
+			t.writeLine(space)
+		}
+		t.moveCursorToPos(newPos)
+	}
+	t.line = newLine
+	t.pos = newPos
+}
+
+func (t *Terminal) advanceCursor(places int) {
+	t.cursorX += places
+	t.cursorY += t.cursorX / t.termWidth
+	if t.cursorY > t.maxLine {
+		t.maxLine = t.cursorY
+	}
+	t.cursorX = t.cursorX % t.termWidth
+
+	if places > 0 && t.cursorX == 0 {
+		// Normally terminals will advance the current position
+		// when writing a character. But that doesn't happen
+		// for the last character in a line. However, when
+		// writing a character (except a new line) that causes
+		// a line wrap, the position will be advanced two
+		// places.
+		//
+		// So, if we are stopping at the end of a line, we
+		// need to write a newline so that our cursor can be
+		// advanced to the next line.
+		t.outBuf = append(t.outBuf, '\r', '\n')
+	}
+}
+
+func (t *Terminal) eraseNPreviousChars(n int) {
+	if n == 0 {
+		return
+	}
+
+	if t.pos < n {
+		n = t.pos
+	}
+	t.pos -= n
+	t.moveCursorToPos(t.pos)
+
+	copy(t.line[t.pos:], t.line[n+t.pos:])
+	t.line = t.line[:len(t.line)-n]
+	if t.echo {
+		t.writeLine(t.line[t.pos:])
+		for i := 0; i < n; i++ {
+			t.queue(space)
+		}
+		t.advanceCursor(n)
+		t.moveCursorToPos(t.pos)
+	}
+}
+
+// countToLeftWord returns then number of characters from the cursor to the
+// start of the previous word.
+func (t *Terminal) countToLeftWord() int {
+	if t.pos == 0 {
+		return 0
+	}
+
+	pos := t.pos - 1
+	for pos > 0 {
+		if t.line[pos] != ' ' {
+			break
+		}
+		pos--
+	}
+	for pos > 0 {
+		if t.line[pos] == ' ' {
+			pos++
+			break
+		}
+		pos--
+	}
+
+	return t.pos - pos
+}
+
+// countToRightWord returns then number of characters from the cursor to the
+// start of the next word.
+func (t *Terminal) countToRightWord() int {
+	pos := t.pos
+	for pos < len(t.line) {
+		if t.line[pos] == ' ' {
+			break
+		}
+		pos++
+	}
+	for pos < len(t.line) {
+		if t.line[pos] != ' ' {
+			break
+		}
+		pos++
+	}
+	return pos - t.pos
+}
+
+// visualLength returns the number of visible glyphs in s.
+func visualLength(runes []rune) int {
+	inEscapeSeq := false
+	length := 0
+
+	for _, r := range runes {
+		switch {
+		case inEscapeSeq:
+			if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
+				inEscapeSeq = false
+			}
+		case r == '\x1b':
+			inEscapeSeq = true
+		default:
+			length++
+		}
+	}
+
+	return length
+}
+
+// handleKey processes the given key and, optionally, returns a line of text
+// that the user has entered.
+func (t *Terminal) handleKey(key rune) (line string, ok bool) {
+	if t.pasteActive && key != keyEnter {
+		t.addKeyToLine(key)
+		return
+	}
+
+	switch key {
+	case keyBackspace:
+		if t.pos == 0 {
+			return
+		}
+		t.eraseNPreviousChars(1)
+	case keyAltLeft:
+		// move left by a word.
+		t.pos -= t.countToLeftWord()
+		t.moveCursorToPos(t.pos)
+	case keyAltRight:
+		// move right by a word.
+		t.pos += t.countToRightWord()
+		t.moveCursorToPos(t.pos)
+	case keyLeft:
+		if t.pos == 0 {
+			return
+		}
+		t.pos--
+		t.moveCursorToPos(t.pos)
+	case keyRight:
+		if t.pos == len(t.line) {
+			return
+		}
+		t.pos++
+		t.moveCursorToPos(t.pos)
+	case keyHome:
+		if t.pos == 0 {
+			return
+		}
+		t.pos = 0
+		t.moveCursorToPos(t.pos)
+	case keyEnd:
+		if t.pos == len(t.line) {
+			return
+		}
+		t.pos = len(t.line)
+		t.moveCursorToPos(t.pos)
+	case keyUp:
+		entry, ok := t.history.NthPreviousEntry(t.historyIndex + 1)
+		if !ok {
+			return "", false
+		}
+		if t.historyIndex == -1 {
+			t.historyPending = string(t.line)
+		}
+		t.historyIndex++
+		runes := []rune(entry)
+		t.setLine(runes, len(runes))
+	case keyDown:
+		switch t.historyIndex {
+		case -1:
+			return
+		case 0:
+			runes := []rune(t.historyPending)
+			t.setLine(runes, len(runes))
+			t.historyIndex--
+		default:
+			entry, ok := t.history.NthPreviousEntry(t.historyIndex - 1)
+			if ok {
+				t.historyIndex--
+				runes := []rune(entry)
+				t.setLine(runes, len(runes))
+			}
+		}
+	case keyEnter:
+		t.moveCursorToPos(len(t.line))
+		t.queue([]rune("\r\n"))
+		line = string(t.line)
+		ok = true
+		t.line = t.line[:0]
+		t.pos = 0
+		t.cursorX = 0
+		t.cursorY = 0
+		t.maxLine = 0
+	case keyDeleteWord:
+		// Delete zero or more spaces and then one or more characters.
+		t.eraseNPreviousChars(t.countToLeftWord())
+	case keyDeleteLine:
+		// Delete everything from the current cursor position to the
+		// end of line.
+		for i := t.pos; i < len(t.line); i++ {
+			t.queue(space)
+			t.advanceCursor(1)
+		}
+		t.line = t.line[:t.pos]
+		t.moveCursorToPos(t.pos)
+	case keyCtrlD:
+		// Erase the character under the current position.
+		// The EOF case when the line is empty is handled in
+		// readLine().
+		if t.pos < len(t.line) {
+			t.pos++
+			t.eraseNPreviousChars(1)
+		}
+	case keyCtrlU:
+		t.eraseNPreviousChars(t.pos)
+	case keyClearScreen:
+		// Erases the screen and moves the cursor to the home position.
+		t.queue([]rune("\x1b[2J\x1b[H"))
+		t.queue(t.prompt)
+		t.cursorX, t.cursorY = 0, 0
+		t.advanceCursor(visualLength(t.prompt))
+		t.setLine(t.line, t.pos)
+	default:
+		if t.AutoCompleteCallback != nil {
+			prefix := string(t.line[:t.pos])
+			suffix := string(t.line[t.pos:])
+
+			t.lock.Unlock()
+			newLine, newPos, completeOk := t.AutoCompleteCallback(prefix+suffix, len(prefix), key)
+			t.lock.Lock()
+
+			if completeOk {
+				t.setLine([]rune(newLine), utf8.RuneCount([]byte(newLine)[:newPos]))
+				return
+			}
+		}
+		if !isPrintable(key) {
+			return
+		}
+		if len(t.line) == maxLineLength {
+			return
+		}
+		t.addKeyToLine(key)
+	}
+	return
+}
+
+// addKeyToLine inserts the given key at the current position in the current
+// line.
+func (t *Terminal) addKeyToLine(key rune) {
+	if len(t.line) == cap(t.line) {
+		newLine := make([]rune, len(t.line), 2*(1+len(t.line)))
+		copy(newLine, t.line)
+		t.line = newLine
+	}
+	t.line = t.line[:len(t.line)+1]
+	copy(t.line[t.pos+1:], t.line[t.pos:])
+	t.line[t.pos] = key
+	if t.echo {
+		t.writeLine(t.line[t.pos:])
+	}
+	t.pos++
+	t.moveCursorToPos(t.pos)
+}
+
+func (t *Terminal) writeLine(line []rune) {
+	for len(line) != 0 {
+		remainingOnLine := t.termWidth - t.cursorX
+		todo := len(line)
+		if todo > remainingOnLine {
+			todo = remainingOnLine
+		}
+		t.queue(line[:todo])
+		t.advanceCursor(visualLength(line[:todo]))
+		line = line[todo:]
+	}
+}
+
+// writeWithCRLF writes buf to w but replaces all occurrences of \n with \r\n.
+func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) {
+	for len(buf) > 0 {
+		i := bytes.IndexByte(buf, '\n')
+		todo := len(buf)
+		if i >= 0 {
+			todo = i
+		}
+
+		var nn int
+		nn, err = w.Write(buf[:todo])
+		n += nn
+		if err != nil {
+			return n, err
+		}
+		buf = buf[todo:]
+
+		if i >= 0 {
+			if _, err = w.Write(crlf); err != nil {
+				return n, err
+			}
+			n++
+			buf = buf[1:]
+		}
+	}
+
+	return n, nil
+}
+
+func (t *Terminal) Write(buf []byte) (n int, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	if t.cursorX == 0 && t.cursorY == 0 {
+		// This is the easy case: there's nothing on the screen that we
+		// have to move out of the way.
+		return writeWithCRLF(t.c, buf)
+	}
+
+	// We have a prompt and possibly user input on the screen. We
+	// have to clear it first.
+	t.move(0 /* up */, 0 /* down */, t.cursorX /* left */, 0 /* right */)
+	t.cursorX = 0
+	t.clearLineToRight()
+
+	for t.cursorY > 0 {
+		t.move(1 /* up */, 0, 0, 0)
+		t.cursorY--
+		t.clearLineToRight()
+	}
+
+	if _, err = t.c.Write(t.outBuf); err != nil {
+		return
+	}
+	t.outBuf = t.outBuf[:0]
+
+	if n, err = writeWithCRLF(t.c, buf); err != nil {
+		return
+	}
+
+	t.writeLine(t.prompt)
+	if t.echo {
+		t.writeLine(t.line)
+	}
+
+	t.moveCursorToPos(t.pos)
+
+	if _, err = t.c.Write(t.outBuf); err != nil {
+		return
+	}
+	t.outBuf = t.outBuf[:0]
+	return
+}
+
+// ReadPassword temporarily changes the prompt and reads a password, without
+// echo, from the terminal.
+func (t *Terminal) ReadPassword(prompt string) (line string, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	oldPrompt := t.prompt
+	t.prompt = []rune(prompt)
+	t.echo = false
+
+	line, err = t.readLine()
+
+	t.prompt = oldPrompt
+	t.echo = true
+
+	return
+}
+
+// ReadLine returns a line of input from the terminal.
+func (t *Terminal) ReadLine() (line string, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	return t.readLine()
+}
+
+func (t *Terminal) readLine() (line string, err error) {
+	// t.lock must be held at this point
+
+	if t.cursorX == 0 && t.cursorY == 0 {
+		t.writeLine(t.prompt)
+		t.c.Write(t.outBuf)
+		t.outBuf = t.outBuf[:0]
+	}
+
+	lineIsPasted := t.pasteActive
+
+	for {
+		rest := t.remainder
+		lineOk := false
+		for !lineOk {
+			var key rune
+			key, rest = bytesToKey(rest, t.pasteActive)
+			if key == utf8.RuneError {
+				break
+			}
+			if !t.pasteActive {
+				if key == keyCtrlD {
+					if len(t.line) == 0 {
+						return "", io.EOF
+					}
+				}
+				if key == keyCtrlC {
+					return "", io.EOF
+				}
+				if key == keyPasteStart {
+					t.pasteActive = true
+					if len(t.line) == 0 {
+						lineIsPasted = true
+					}
+					continue
+				}
+			} else if key == keyPasteEnd {
+				t.pasteActive = false
+				continue
+			}
+			if !t.pasteActive {
+				lineIsPasted = false
+			}
+			line, lineOk = t.handleKey(key)
+		}
+		if len(rest) > 0 {
+			n := copy(t.inBuf[:], rest)
+			t.remainder = t.inBuf[:n]
+		} else {
+			t.remainder = nil
+		}
+		t.c.Write(t.outBuf)
+		t.outBuf = t.outBuf[:0]
+		if lineOk {
+			if t.echo {
+				t.historyIndex = -1
+				t.history.Add(line)
+			}
+			if lineIsPasted {
+				err = ErrPasteIndicator
+			}
+			return
+		}
+
+		// t.remainder is a slice at the beginning of t.inBuf
+		// containing a partial key sequence
+		readBuf := t.inBuf[len(t.remainder):]
+		var n int
+
+		t.lock.Unlock()
+		n, err = t.c.Read(readBuf)
+		t.lock.Lock()
+
+		if err != nil {
+			return
+		}
+
+		t.remainder = t.inBuf[:n+len(t.remainder)]
+	}
+}
+
+// SetPrompt sets the prompt to be used when reading subsequent lines.
+func (t *Terminal) SetPrompt(prompt string) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	t.prompt = []rune(prompt)
+}
+
+func (t *Terminal) clearAndRepaintLinePlusNPrevious(numPrevLines int) {
+	// Move cursor to column zero at the start of the line.
+	t.move(t.cursorY, 0, t.cursorX, 0)
+	t.cursorX, t.cursorY = 0, 0
+	t.clearLineToRight()
+	for t.cursorY < numPrevLines {
+		// Move down a line
+		t.move(0, 1, 0, 0)
+		t.cursorY++
+		t.clearLineToRight()
+	}
+	// Move back to beginning.
+	t.move(t.cursorY, 0, 0, 0)
+	t.cursorX, t.cursorY = 0, 0
+
+	t.queue(t.prompt)
+	t.advanceCursor(visualLength(t.prompt))
+	t.writeLine(t.line)
+	t.moveCursorToPos(t.pos)
+}
+
+func (t *Terminal) SetSize(width, height int) error {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	if width == 0 {
+		width = 1
+	}
+
+	oldWidth := t.termWidth
+	t.termWidth, t.termHeight = width, height
+
+	switch {
+	case width == oldWidth:
+		// If the width didn't change then nothing else needs to be
+		// done.
+		return nil
+	case len(t.line) == 0 && t.cursorX == 0 && t.cursorY == 0:
+		// If there is nothing on current line and no prompt printed,
+		// just do nothing
+		return nil
+	case width < oldWidth:
+		// Some terminals (e.g. xterm) will truncate lines that were
+		// too long when shinking. Others, (e.g. gnome-terminal) will
+		// attempt to wrap them. For the former, repainting t.maxLine
+		// works great, but that behaviour goes badly wrong in the case
+		// of the latter because they have doubled every full line.
+
+		// We assume that we are working on a terminal that wraps lines
+		// and adjust the cursor position based on every previous line
+		// wrapping and turning into two. This causes the prompt on
+		// xterms to move upwards, which isn't great, but it avoids a
+		// huge mess with gnome-terminal.
+		if t.cursorX >= t.termWidth {
+			t.cursorX = t.termWidth - 1
+		}
+		t.cursorY *= 2
+		t.clearAndRepaintLinePlusNPrevious(t.maxLine * 2)
+	case width > oldWidth:
+		// If the terminal expands then our position calculations will
+		// be wrong in the future because we think the cursor is
+		// |t.pos| chars into the string, but there will be a gap at
+		// the end of any wrapped line.
+		//
+		// But the position will actually be correct until we move, so
+		// we can move back to the beginning and repaint everything.
+		t.clearAndRepaintLinePlusNPrevious(t.maxLine)
+	}
+
+	_, err := t.c.Write(t.outBuf)
+	t.outBuf = t.outBuf[:0]
+	return err
+}
+
+type pasteIndicatorError struct{}
+
+func (pasteIndicatorError) Error() string {
+	return "terminal: ErrPasteIndicator not correctly handled"
+}
+
+// ErrPasteIndicator may be returned from ReadLine as the error, in addition
+// to valid line data. It indicates that bracketed paste mode is enabled and
+// that the returned line consists only of pasted data. Programs may wish to
+// interpret pasted data more literally than typed data.
+var ErrPasteIndicator = pasteIndicatorError{}
+
+// SetBracketedPasteMode requests that the terminal bracket paste operations
+// with markers. Not all terminals support this but, if it is supported, then
+// enabling this mode will stop any autocomplete callback from running due to
+// pastes. Additionally, any lines that are completely pasted will be returned
+// from ReadLine with the error set to ErrPasteIndicator.
+func (t *Terminal) SetBracketedPasteMode(on bool) {
+	if on {
+		io.WriteString(t.c, "\x1b[?2004h")
+	} else {
+		io.WriteString(t.c, "\x1b[?2004l")
+	}
+}
+
+// stRingBuffer is a ring buffer of strings.
+type stRingBuffer struct {
+	// entries contains max elements.
+	entries []string
+	max     int
+	// head contains the index of the element most recently added to the ring.
+	head int
+	// size contains the number of elements in the ring.
+	size int
+}
+
+func (s *stRingBuffer) Add(a string) {
+	if s.entries == nil {
+		const defaultNumEntries = 100
+		s.entries = make([]string, defaultNumEntries)
+		s.max = defaultNumEntries
+	}
+
+	s.head = (s.head + 1) % s.max
+	s.entries[s.head] = a
+	if s.size < s.max {
+		s.size++
+	}
+}
+
+// NthPreviousEntry returns the value passed to the nth previous call to Add.
+// If n is zero then the immediately prior value is returned, if one, then the
+// next most recent, and so on. If such an element doesn't exist then ok is
+// false.
+func (s *stRingBuffer) NthPreviousEntry(n int) (value string, ok bool) {
+	if n >= s.size {
+		return "", false
+	}
+	index := s.head - n
+	if index < 0 {
+		index += s.max
+	}
+	return s.entries[index], true
+}
+
+// readPasswordLine reads from reader until it finds \n or io.EOF.
+// The slice returned does not include the \n.
+// readPasswordLine also ignores any \r it finds.
+// Windows uses \r as end of line. So, on Windows, readPasswordLine
+// reads until it finds \r and ignores any \n it finds during processing.
+func readPasswordLine(reader io.Reader) ([]byte, error) {
+	var buf [1]byte
+	var ret []byte
+
+	for {
+		n, err := reader.Read(buf[:])
+		if n > 0 {
+			switch buf[0] {
+			case '\b':
+				if len(ret) > 0 {
+					ret = ret[:len(ret)-1]
+				}
+			case '\n':
+				if runtime.GOOS != "windows" {
+					return ret, nil
+				}
+				// otherwise ignore \n
+			case '\r':
+				if runtime.GOOS == "windows" {
+					return ret, nil
+				}
+				// otherwise ignore \r
+			default:
+				ret = append(ret, buf[0])
+			}
+			continue
+		}
+		if err != nil {
+			if err == io.EOF && len(ret) > 0 {
+				return ret, nil
+			}
+			return ret, err
+		}
+	}
+}
diff --git a/vendor/golang.org/x/text/encoding/encoding.go b/vendor/golang.org/x/text/encoding/encoding.go
new file mode 100644
index 0000000..a0bd7cd
--- /dev/null
+++ b/vendor/golang.org/x/text/encoding/encoding.go
@@ -0,0 +1,335 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package encoding defines an interface for character encodings, such as Shift
+// JIS and Windows 1252, that can convert to and from UTF-8.
+//
+// Encoding implementations are provided in other packages, such as
+// golang.org/x/text/encoding/charmap and
+// golang.org/x/text/encoding/japanese.
+package encoding // import "golang.org/x/text/encoding"
+
+import (
+	"errors"
+	"io"
+	"strconv"
+	"unicode/utf8"
+
+	"golang.org/x/text/encoding/internal/identifier"
+	"golang.org/x/text/transform"
+)
+
+// TODO:
+// - There seems to be some inconsistency in when decoders return errors
+//   and when not. Also documentation seems to suggest they shouldn't return
+//   errors at all (except for UTF-16).
+// - Encoders seem to rely on or at least benefit from the input being in NFC
+//   normal form. Perhaps add an example how users could prepare their output.
+
+// Encoding is a character set encoding that can be transformed to and from
+// UTF-8.
+type Encoding interface {
+	// NewDecoder returns a Decoder.
+	NewDecoder() *Decoder
+
+	// NewEncoder returns an Encoder.
+	NewEncoder() *Encoder
+}
+
+// A Decoder converts bytes to UTF-8. It implements transform.Transformer.
+//
+// Transforming source bytes that are not of that encoding will not result in an
+// error per se. Each byte that cannot be transcoded will be represented in the
+// output by the UTF-8 encoding of '\uFFFD', the replacement rune.
+type Decoder struct {
+	transform.Transformer
+
+	// This forces external creators of Decoders to use names in struct
+	// initializers, allowing for future extendibility without having to break
+	// code.
+	_ struct{}
+}
+
+// Bytes converts the given encoded bytes to UTF-8. It returns the converted
+// bytes or nil, err if any error occurred.
+func (d *Decoder) Bytes(b []byte) ([]byte, error) {
+	b, _, err := transform.Bytes(d, b)
+	if err != nil {
+		return nil, err
+	}
+	return b, nil
+}
+
+// String converts the given encoded string to UTF-8. It returns the converted
+// string or "", err if any error occurred.
+func (d *Decoder) String(s string) (string, error) {
+	s, _, err := transform.String(d, s)
+	if err != nil {
+		return "", err
+	}
+	return s, nil
+}
+
+// Reader wraps another Reader to decode its bytes.
+//
+// The Decoder may not be used for any other operation as long as the returned
+// Reader is in use.
+func (d *Decoder) Reader(r io.Reader) io.Reader {
+	return transform.NewReader(r, d)
+}
+
+// An Encoder converts bytes from UTF-8. It implements transform.Transformer.
+//
+// Each rune that cannot be transcoded will result in an error. In this case,
+// the transform will consume all source byte up to, not including the offending
+// rune. Transforming source bytes that are not valid UTF-8 will be replaced by
+// `\uFFFD`. To return early with an error instead, use transform.Chain to
+// preprocess the data with a UTF8Validator.
+type Encoder struct {
+	transform.Transformer
+
+	// This forces external creators of Encoders to use names in struct
+	// initializers, allowing for future extendibility without having to break
+	// code.
+	_ struct{}
+}
+
+// Bytes converts bytes from UTF-8. It returns the converted bytes or nil, err if
+// any error occurred.
+func (e *Encoder) Bytes(b []byte) ([]byte, error) {
+	b, _, err := transform.Bytes(e, b)
+	if err != nil {
+		return nil, err
+	}
+	return b, nil
+}
+
+// String converts a string from UTF-8. It returns the converted string or
+// "", err if any error occurred.
+func (e *Encoder) String(s string) (string, error) {
+	s, _, err := transform.String(e, s)
+	if err != nil {
+		return "", err
+	}
+	return s, nil
+}
+
+// Writer wraps another Writer to encode its UTF-8 output.
+//
+// The Encoder may not be used for any other operation as long as the returned
+// Writer is in use.
+func (e *Encoder) Writer(w io.Writer) io.Writer {
+	return transform.NewWriter(w, e)
+}
+
+// ASCIISub is the ASCII substitute character, as recommended by
+// https://unicode.org/reports/tr36/#Text_Comparison
+const ASCIISub = '\x1a'
+
+// Nop is the nop encoding. Its transformed bytes are the same as the source
+// bytes; it does not replace invalid UTF-8 sequences.
+var Nop Encoding = nop{}
+
+type nop struct{}
+
+func (nop) NewDecoder() *Decoder {
+	return &Decoder{Transformer: transform.Nop}
+}
+func (nop) NewEncoder() *Encoder {
+	return &Encoder{Transformer: transform.Nop}
+}
+
+// Replacement is the replacement encoding. Decoding from the replacement
+// encoding yields a single '\uFFFD' replacement rune. Encoding from UTF-8 to
+// the replacement encoding yields the same as the source bytes except that
+// invalid UTF-8 is converted to '\uFFFD'.
+//
+// It is defined at http://encoding.spec.whatwg.org/#replacement
+var Replacement Encoding = replacement{}
+
+type replacement struct{}
+
+func (replacement) NewDecoder() *Decoder {
+	return &Decoder{Transformer: replacementDecoder{}}
+}
+
+func (replacement) NewEncoder() *Encoder {
+	return &Encoder{Transformer: replacementEncoder{}}
+}
+
+func (replacement) ID() (mib identifier.MIB, other string) {
+	return identifier.Replacement, ""
+}
+
+type replacementDecoder struct{ transform.NopResetter }
+
+func (replacementDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	if len(dst) < 3 {
+		return 0, 0, transform.ErrShortDst
+	}
+	if atEOF {
+		const fffd = "\ufffd"
+		dst[0] = fffd[0]
+		dst[1] = fffd[1]
+		dst[2] = fffd[2]
+		nDst = 3
+	}
+	return nDst, len(src), nil
+}
+
+type replacementEncoder struct{ transform.NopResetter }
+
+func (replacementEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	r, size := rune(0), 0
+
+	for ; nSrc < len(src); nSrc += size {
+		r = rune(src[nSrc])
+
+		// Decode a 1-byte rune.
+		if r < utf8.RuneSelf {
+			size = 1
+
+		} else {
+			// Decode a multi-byte rune.
+			r, size = utf8.DecodeRune(src[nSrc:])
+			if size == 1 {
+				// All valid runes of size 1 (those below utf8.RuneSelf) were
+				// handled above. We have invalid UTF-8 or we haven't seen the
+				// full character yet.
+				if !atEOF && !utf8.FullRune(src[nSrc:]) {
+					err = transform.ErrShortSrc
+					break
+				}
+				r = '\ufffd'
+			}
+		}
+
+		if nDst+utf8.RuneLen(r) > len(dst) {
+			err = transform.ErrShortDst
+			break
+		}
+		nDst += utf8.EncodeRune(dst[nDst:], r)
+	}
+	return nDst, nSrc, err
+}
+
+// HTMLEscapeUnsupported wraps encoders to replace source runes outside the
+// repertoire of the destination encoding with HTML escape sequences.
+//
+// This wrapper exists to comply to URL and HTML forms requiring a
+// non-terminating legacy encoder. The produced sequences may lead to data
+// loss as they are indistinguishable from legitimate input. To avoid this
+// issue, use UTF-8 encodings whenever possible.
+func HTMLEscapeUnsupported(e *Encoder) *Encoder {
+	return &Encoder{Transformer: &errorHandler{e, errorToHTML}}
+}
+
+// ReplaceUnsupported wraps encoders to replace source runes outside the
+// repertoire of the destination encoding with an encoding-specific
+// replacement.
+//
+// This wrapper is only provided for backwards compatibility and legacy
+// handling. Its use is strongly discouraged. Use UTF-8 whenever possible.
+func ReplaceUnsupported(e *Encoder) *Encoder {
+	return &Encoder{Transformer: &errorHandler{e, errorToReplacement}}
+}
+
+type errorHandler struct {
+	*Encoder
+	handler func(dst []byte, r rune, err repertoireError) (n int, ok bool)
+}
+
+// TODO: consider making this error public in some form.
+type repertoireError interface {
+	Replacement() byte
+}
+
+func (h errorHandler) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	nDst, nSrc, err = h.Transformer.Transform(dst, src, atEOF)
+	for err != nil {
+		rerr, ok := err.(repertoireError)
+		if !ok {
+			return nDst, nSrc, err
+		}
+		r, sz := utf8.DecodeRune(src[nSrc:])
+		n, ok := h.handler(dst[nDst:], r, rerr)
+		if !ok {
+			return nDst, nSrc, transform.ErrShortDst
+		}
+		err = nil
+		nDst += n
+		if nSrc += sz; nSrc < len(src) {
+			var dn, sn int
+			dn, sn, err = h.Transformer.Transform(dst[nDst:], src[nSrc:], atEOF)
+			nDst += dn
+			nSrc += sn
+		}
+	}
+	return nDst, nSrc, err
+}
+
+func errorToHTML(dst []byte, r rune, err repertoireError) (n int, ok bool) {
+	buf := [8]byte{}
+	b := strconv.AppendUint(buf[:0], uint64(r), 10)
+	if n = len(b) + len("&#;"); n >= len(dst) {
+		return 0, false
+	}
+	dst[0] = '&'
+	dst[1] = '#'
+	dst[copy(dst[2:], b)+2] = ';'
+	return n, true
+}
+
+func errorToReplacement(dst []byte, r rune, err repertoireError) (n int, ok bool) {
+	if len(dst) == 0 {
+		return 0, false
+	}
+	dst[0] = err.Replacement()
+	return 1, true
+}
+
+// ErrInvalidUTF8 means that a transformer encountered invalid UTF-8.
+var ErrInvalidUTF8 = errors.New("encoding: invalid UTF-8")
+
+// UTF8Validator is a transformer that returns ErrInvalidUTF8 on the first
+// input byte that is not valid UTF-8.
+var UTF8Validator transform.Transformer = utf8Validator{}
+
+type utf8Validator struct{ transform.NopResetter }
+
+func (utf8Validator) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	n := len(src)
+	if n > len(dst) {
+		n = len(dst)
+	}
+	for i := 0; i < n; {
+		if c := src[i]; c < utf8.RuneSelf {
+			dst[i] = c
+			i++
+			continue
+		}
+		_, size := utf8.DecodeRune(src[i:])
+		if size == 1 {
+			// All valid runes of size 1 (those below utf8.RuneSelf) were
+			// handled above. We have invalid UTF-8 or we haven't seen the
+			// full character yet.
+			err = ErrInvalidUTF8
+			if !atEOF && !utf8.FullRune(src[i:]) {
+				err = transform.ErrShortSrc
+			}
+			return i, i, err
+		}
+		if i+size > len(dst) {
+			return i, i, transform.ErrShortDst
+		}
+		for ; size > 0; size-- {
+			dst[i] = src[i]
+			i++
+		}
+	}
+	if len(src) > len(dst) {
+		err = transform.ErrShortDst
+	}
+	return n, n, err
+}
diff --git a/vendor/golang.org/x/text/encoding/internal/identifier/identifier.go b/vendor/golang.org/x/text/encoding/internal/identifier/identifier.go
new file mode 100644
index 0000000..5c9b85c
--- /dev/null
+++ b/vendor/golang.org/x/text/encoding/internal/identifier/identifier.go
@@ -0,0 +1,81 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:generate go run gen.go
+
+// Package identifier defines the contract between implementations of Encoding
+// and Index by defining identifiers that uniquely identify standardized coded
+// character sets (CCS) and character encoding schemes (CES), which we will
+// together refer to as encodings, for which Encoding implementations provide
+// converters to and from UTF-8. This package is typically only of concern to
+// implementers of Indexes and Encodings.
+//
+// One part of the identifier is the MIB code, which is defined by IANA and
+// uniquely identifies a CCS or CES. Each code is associated with data that
+// references authorities, official documentation as well as aliases and MIME
+// names.
+//
+// Not all CESs are covered by the IANA registry. The "other" string that is
+// returned by ID can be used to identify other character sets or versions of
+// existing ones.
+//
+// It is recommended that each package that provides a set of Encodings provide
+// the All and Common variables to reference all supported encodings and
+// commonly used subset. This allows Index implementations to include all
+// available encodings without explicitly referencing or knowing about them.
+package identifier
+
+// Note: this package is internal, but could be made public if there is a need
+// for writing third-party Indexes and Encodings.
+
+// References:
+// - http://source.icu-project.org/repos/icu/icu/trunk/source/data/mappings/convrtrs.txt
+// - http://www.iana.org/assignments/character-sets/character-sets.xhtml
+// - http://www.iana.org/assignments/ianacharset-mib/ianacharset-mib
+// - http://www.ietf.org/rfc/rfc2978.txt
+// - https://www.unicode.org/reports/tr22/
+// - http://www.w3.org/TR/encoding/
+// - https://encoding.spec.whatwg.org/
+// - https://encoding.spec.whatwg.org/encodings.json
+// - https://tools.ietf.org/html/rfc6657#section-5
+
+// Interface can be implemented by Encodings to define the CCS or CES for which
+// it implements conversions.
+type Interface interface {
+	// ID returns an encoding identifier. Exactly one of the mib and other
+	// values should be non-zero.
+	//
+	// In the usual case it is only necessary to indicate the MIB code. The
+	// other string can be used to specify encodings for which there is no MIB,
+	// such as "x-mac-dingbat".
+	//
+	// The other string may only contain the characters a-z, A-Z, 0-9, - and _.
+	ID() (mib MIB, other string)
+
+	// NOTE: the restrictions on the encoding are to allow extending the syntax
+	// with additional information such as versions, vendors and other variants.
+}
+
+// A MIB identifies an encoding. It is derived from the IANA MIB codes and adds
+// some identifiers for some encodings that are not covered by the IANA
+// standard.
+//
+// See http://www.iana.org/assignments/ianacharset-mib.
+type MIB uint16
+
+// These additional MIB types are not defined in IANA. They are added because
+// they are common and defined within the text repo.
+const (
+	// Unofficial marks the start of encodings not registered by IANA.
+	Unofficial MIB = 10000 + iota
+
+	// Replacement is the WhatWG replacement encoding.
+	Replacement
+
+	// XUserDefined is the code for x-user-defined.
+	XUserDefined
+
+	// MacintoshCyrillic is the code for x-mac-cyrillic.
+	MacintoshCyrillic
+)
diff --git a/vendor/golang.org/x/text/encoding/internal/identifier/mib.go b/vendor/golang.org/x/text/encoding/internal/identifier/mib.go
new file mode 100644
index 0000000..fc7df1b
--- /dev/null
+++ b/vendor/golang.org/x/text/encoding/internal/identifier/mib.go
@@ -0,0 +1,1619 @@
+// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
+
+package identifier
+
+const (
+	// ASCII is the MIB identifier with IANA name US-ASCII (MIME: US-ASCII).
+	//
+	// ANSI X3.4-1986
+	// Reference: RFC2046
+	ASCII MIB = 3
+
+	// ISOLatin1 is the MIB identifier with IANA name ISO_8859-1:1987 (MIME: ISO-8859-1).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatin1 MIB = 4
+
+	// ISOLatin2 is the MIB identifier with IANA name ISO_8859-2:1987 (MIME: ISO-8859-2).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatin2 MIB = 5
+
+	// ISOLatin3 is the MIB identifier with IANA name ISO_8859-3:1988 (MIME: ISO-8859-3).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatin3 MIB = 6
+
+	// ISOLatin4 is the MIB identifier with IANA name ISO_8859-4:1988 (MIME: ISO-8859-4).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatin4 MIB = 7
+
+	// ISOLatinCyrillic is the MIB identifier with IANA name ISO_8859-5:1988 (MIME: ISO-8859-5).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatinCyrillic MIB = 8
+
+	// ISOLatinArabic is the MIB identifier with IANA name ISO_8859-6:1987 (MIME: ISO-8859-6).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatinArabic MIB = 9
+
+	// ISOLatinGreek is the MIB identifier with IANA name ISO_8859-7:1987 (MIME: ISO-8859-7).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1947
+	// Reference: RFC1345
+	ISOLatinGreek MIB = 10
+
+	// ISOLatinHebrew is the MIB identifier with IANA name ISO_8859-8:1988 (MIME: ISO-8859-8).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatinHebrew MIB = 11
+
+	// ISOLatin5 is the MIB identifier with IANA name ISO_8859-9:1989 (MIME: ISO-8859-9).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatin5 MIB = 12
+
+	// ISOLatin6 is the MIB identifier with IANA name ISO-8859-10 (MIME: ISO-8859-10).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOLatin6 MIB = 13
+
+	// ISOTextComm is the MIB identifier with IANA name ISO_6937-2-add.
+	//
+	// ISO-IR: International Register of Escape Sequences and ISO 6937-2:1983
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISOTextComm MIB = 14
+
+	// HalfWidthKatakana is the MIB identifier with IANA name JIS_X0201.
+	//
+	// JIS X 0201-1976.   One byte only, this is equivalent to
+	// JIS/Roman (similar to ASCII) plus eight-bit half-width
+	// Katakana
+	// Reference: RFC1345
+	HalfWidthKatakana MIB = 15
+
+	// JISEncoding is the MIB identifier with IANA name JIS_Encoding.
+	//
+	// JIS X 0202-1991.  Uses ISO 2022 escape sequences to
+	// shift code sets as documented in JIS X 0202-1991.
+	JISEncoding MIB = 16
+
+	// ShiftJIS is the MIB identifier with IANA name Shift_JIS (MIME: Shift_JIS).
+	//
+	// This charset is an extension of csHalfWidthKatakana by
+	// adding graphic characters in JIS X 0208.  The CCS's are
+	// JIS X0201:1997 and JIS X0208:1997.  The
+	// complete definition is shown in Appendix 1 of JIS
+	// X0208:1997.
+	// This charset can be used for the top-level media type "text".
+	ShiftJIS MIB = 17
+
+	// EUCPkdFmtJapanese is the MIB identifier with IANA name Extended_UNIX_Code_Packed_Format_for_Japanese (MIME: EUC-JP).
+	//
+	// Standardized by OSF, UNIX International, and UNIX Systems
+	// Laboratories Pacific.  Uses ISO 2022 rules to select
+	// code set 0: US-ASCII (a single 7-bit byte set)
+	// code set 1: JIS X0208-1990 (a double 8-bit byte set)
+	// restricted to A0-FF in both bytes
+	// code set 2: Half Width Katakana (a single 7-bit byte set)
+	// requiring SS2 as the character prefix
+	// code set 3: JIS X0212-1990 (a double 7-bit byte set)
+	// restricted to A0-FF in both bytes
+	// requiring SS3 as the character prefix
+	EUCPkdFmtJapanese MIB = 18
+
+	// EUCFixWidJapanese is the MIB identifier with IANA name Extended_UNIX_Code_Fixed_Width_for_Japanese.
+	//
+	// Used in Japan.  Each character is 2 octets.
+	// code set 0: US-ASCII (a single 7-bit byte set)
+	// 1st byte = 00
+	// 2nd byte = 20-7E
+	// code set 1: JIS X0208-1990 (a double 7-bit byte set)
+	// restricted  to A0-FF in both bytes
+	// code set 2: Half Width Katakana (a single 7-bit byte set)
+	// 1st byte = 00
+	// 2nd byte = A0-FF
+	// code set 3: JIS X0212-1990 (a double 7-bit byte set)
+	// restricted to A0-FF in
+	// the first byte
+	// and 21-7E in the second byte
+	EUCFixWidJapanese MIB = 19
+
+	// ISO4UnitedKingdom is the MIB identifier with IANA name BS_4730.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO4UnitedKingdom MIB = 20
+
+	// ISO11SwedishForNames is the MIB identifier with IANA name SEN_850200_C.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO11SwedishForNames MIB = 21
+
+	// ISO15Italian is the MIB identifier with IANA name IT.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO15Italian MIB = 22
+
+	// ISO17Spanish is the MIB identifier with IANA name ES.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO17Spanish MIB = 23
+
+	// ISO21German is the MIB identifier with IANA name DIN_66003.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO21German MIB = 24
+
+	// ISO60Norwegian1 is the MIB identifier with IANA name NS_4551-1.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO60Norwegian1 MIB = 25
+
+	// ISO69French is the MIB identifier with IANA name NF_Z_62-010.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO69French MIB = 26
+
+	// ISO10646UTF1 is the MIB identifier with IANA name ISO-10646-UTF-1.
+	//
+	// Universal Transfer Format (1), this is the multibyte
+	// encoding, that subsets ASCII-7. It does not have byte
+	// ordering issues.
+	ISO10646UTF1 MIB = 27
+
+	// ISO646basic1983 is the MIB identifier with IANA name ISO_646.basic:1983.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO646basic1983 MIB = 28
+
+	// INVARIANT is the MIB identifier with IANA name INVARIANT.
+	//
+	// Reference: RFC1345
+	INVARIANT MIB = 29
+
+	// ISO2IntlRefVersion is the MIB identifier with IANA name ISO_646.irv:1983.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO2IntlRefVersion MIB = 30
+
+	// NATSSEFI is the MIB identifier with IANA name NATS-SEFI.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	NATSSEFI MIB = 31
+
+	// NATSSEFIADD is the MIB identifier with IANA name NATS-SEFI-ADD.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	NATSSEFIADD MIB = 32
+
+	// NATSDANO is the MIB identifier with IANA name NATS-DANO.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	NATSDANO MIB = 33
+
+	// NATSDANOADD is the MIB identifier with IANA name NATS-DANO-ADD.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	NATSDANOADD MIB = 34
+
+	// ISO10Swedish is the MIB identifier with IANA name SEN_850200_B.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO10Swedish MIB = 35
+
+	// KSC56011987 is the MIB identifier with IANA name KS_C_5601-1987.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	KSC56011987 MIB = 36
+
+	// ISO2022KR is the MIB identifier with IANA name ISO-2022-KR (MIME: ISO-2022-KR).
+	//
+	// rfc1557 (see also KS_C_5601-1987)
+	// Reference: RFC1557
+	ISO2022KR MIB = 37
+
+	// EUCKR is the MIB identifier with IANA name EUC-KR (MIME: EUC-KR).
+	//
+	// rfc1557 (see also KS_C_5861-1992)
+	// Reference: RFC1557
+	EUCKR MIB = 38
+
+	// ISO2022JP is the MIB identifier with IANA name ISO-2022-JP (MIME: ISO-2022-JP).
+	//
+	// rfc1468 (see also rfc2237 )
+	// Reference: RFC1468
+	ISO2022JP MIB = 39
+
+	// ISO2022JP2 is the MIB identifier with IANA name ISO-2022-JP-2 (MIME: ISO-2022-JP-2).
+	//
+	// rfc1554
+	// Reference: RFC1554
+	ISO2022JP2 MIB = 40
+
+	// ISO13JISC6220jp is the MIB identifier with IANA name JIS_C6220-1969-jp.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO13JISC6220jp MIB = 41
+
+	// ISO14JISC6220ro is the MIB identifier with IANA name JIS_C6220-1969-ro.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO14JISC6220ro MIB = 42
+
+	// ISO16Portuguese is the MIB identifier with IANA name PT.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO16Portuguese MIB = 43
+
+	// ISO18Greek7Old is the MIB identifier with IANA name greek7-old.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO18Greek7Old MIB = 44
+
+	// ISO19LatinGreek is the MIB identifier with IANA name latin-greek.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO19LatinGreek MIB = 45
+
+	// ISO25French is the MIB identifier with IANA name NF_Z_62-010_(1973).
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO25French MIB = 46
+
+	// ISO27LatinGreek1 is the MIB identifier with IANA name Latin-greek-1.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO27LatinGreek1 MIB = 47
+
+	// ISO5427Cyrillic is the MIB identifier with IANA name ISO_5427.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO5427Cyrillic MIB = 48
+
+	// ISO42JISC62261978 is the MIB identifier with IANA name JIS_C6226-1978.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO42JISC62261978 MIB = 49
+
+	// ISO47BSViewdata is the MIB identifier with IANA name BS_viewdata.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO47BSViewdata MIB = 50
+
+	// ISO49INIS is the MIB identifier with IANA name INIS.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO49INIS MIB = 51
+
+	// ISO50INIS8 is the MIB identifier with IANA name INIS-8.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO50INIS8 MIB = 52
+
+	// ISO51INISCyrillic is the MIB identifier with IANA name INIS-cyrillic.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO51INISCyrillic MIB = 53
+
+	// ISO54271981 is the MIB identifier with IANA name ISO_5427:1981.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO54271981 MIB = 54
+
+	// ISO5428Greek is the MIB identifier with IANA name ISO_5428:1980.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO5428Greek MIB = 55
+
+	// ISO57GB1988 is the MIB identifier with IANA name GB_1988-80.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO57GB1988 MIB = 56
+
+	// ISO58GB231280 is the MIB identifier with IANA name GB_2312-80.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO58GB231280 MIB = 57
+
+	// ISO61Norwegian2 is the MIB identifier with IANA name NS_4551-2.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO61Norwegian2 MIB = 58
+
+	// ISO70VideotexSupp1 is the MIB identifier with IANA name videotex-suppl.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO70VideotexSupp1 MIB = 59
+
+	// ISO84Portuguese2 is the MIB identifier with IANA name PT2.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO84Portuguese2 MIB = 60
+
+	// ISO85Spanish2 is the MIB identifier with IANA name ES2.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO85Spanish2 MIB = 61
+
+	// ISO86Hungarian is the MIB identifier with IANA name MSZ_7795.3.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO86Hungarian MIB = 62
+
+	// ISO87JISX0208 is the MIB identifier with IANA name JIS_C6226-1983.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO87JISX0208 MIB = 63
+
+	// ISO88Greek7 is the MIB identifier with IANA name greek7.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO88Greek7 MIB = 64
+
+	// ISO89ASMO449 is the MIB identifier with IANA name ASMO_449.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO89ASMO449 MIB = 65
+
+	// ISO90 is the MIB identifier with IANA name iso-ir-90.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO90 MIB = 66
+
+	// ISO91JISC62291984a is the MIB identifier with IANA name JIS_C6229-1984-a.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO91JISC62291984a MIB = 67
+
+	// ISO92JISC62991984b is the MIB identifier with IANA name JIS_C6229-1984-b.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO92JISC62991984b MIB = 68
+
+	// ISO93JIS62291984badd is the MIB identifier with IANA name JIS_C6229-1984-b-add.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO93JIS62291984badd MIB = 69
+
+	// ISO94JIS62291984hand is the MIB identifier with IANA name JIS_C6229-1984-hand.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO94JIS62291984hand MIB = 70
+
+	// ISO95JIS62291984handadd is the MIB identifier with IANA name JIS_C6229-1984-hand-add.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO95JIS62291984handadd MIB = 71
+
+	// ISO96JISC62291984kana is the MIB identifier with IANA name JIS_C6229-1984-kana.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO96JISC62291984kana MIB = 72
+
+	// ISO2033 is the MIB identifier with IANA name ISO_2033-1983.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO2033 MIB = 73
+
+	// ISO99NAPLPS is the MIB identifier with IANA name ANSI_X3.110-1983.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO99NAPLPS MIB = 74
+
+	// ISO102T617bit is the MIB identifier with IANA name T.61-7bit.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO102T617bit MIB = 75
+
+	// ISO103T618bit is the MIB identifier with IANA name T.61-8bit.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO103T618bit MIB = 76
+
+	// ISO111ECMACyrillic is the MIB identifier with IANA name ECMA-cyrillic.
+	//
+	// ISO registry
+	ISO111ECMACyrillic MIB = 77
+
+	// ISO121Canadian1 is the MIB identifier with IANA name CSA_Z243.4-1985-1.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO121Canadian1 MIB = 78
+
+	// ISO122Canadian2 is the MIB identifier with IANA name CSA_Z243.4-1985-2.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO122Canadian2 MIB = 79
+
+	// ISO123CSAZ24341985gr is the MIB identifier with IANA name CSA_Z243.4-1985-gr.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO123CSAZ24341985gr MIB = 80
+
+	// ISO88596E is the MIB identifier with IANA name ISO_8859-6-E (MIME: ISO-8859-6-E).
+	//
+	// rfc1556
+	// Reference: RFC1556
+	ISO88596E MIB = 81
+
+	// ISO88596I is the MIB identifier with IANA name ISO_8859-6-I (MIME: ISO-8859-6-I).
+	//
+	// rfc1556
+	// Reference: RFC1556
+	ISO88596I MIB = 82
+
+	// ISO128T101G2 is the MIB identifier with IANA name T.101-G2.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO128T101G2 MIB = 83
+
+	// ISO88598E is the MIB identifier with IANA name ISO_8859-8-E (MIME: ISO-8859-8-E).
+	//
+	// rfc1556
+	// Reference: RFC1556
+	ISO88598E MIB = 84
+
+	// ISO88598I is the MIB identifier with IANA name ISO_8859-8-I (MIME: ISO-8859-8-I).
+	//
+	// rfc1556
+	// Reference: RFC1556
+	ISO88598I MIB = 85
+
+	// ISO139CSN369103 is the MIB identifier with IANA name CSN_369103.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO139CSN369103 MIB = 86
+
+	// ISO141JUSIB1002 is the MIB identifier with IANA name JUS_I.B1.002.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO141JUSIB1002 MIB = 87
+
+	// ISO143IECP271 is the MIB identifier with IANA name IEC_P27-1.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO143IECP271 MIB = 88
+
+	// ISO146Serbian is the MIB identifier with IANA name JUS_I.B1.003-serb.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO146Serbian MIB = 89
+
+	// ISO147Macedonian is the MIB identifier with IANA name JUS_I.B1.003-mac.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO147Macedonian MIB = 90
+
+	// ISO150GreekCCITT is the MIB identifier with IANA name greek-ccitt.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO150GreekCCITT MIB = 91
+
+	// ISO151Cuba is the MIB identifier with IANA name NC_NC00-10:81.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO151Cuba MIB = 92
+
+	// ISO6937Add is the MIB identifier with IANA name ISO_6937-2-25.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO6937Add MIB = 93
+
+	// ISO153GOST1976874 is the MIB identifier with IANA name GOST_19768-74.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO153GOST1976874 MIB = 94
+
+	// ISO8859Supp is the MIB identifier with IANA name ISO_8859-supp.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO8859Supp MIB = 95
+
+	// ISO10367Box is the MIB identifier with IANA name ISO_10367-box.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO10367Box MIB = 96
+
+	// ISO158Lap is the MIB identifier with IANA name latin-lap.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO158Lap MIB = 97
+
+	// ISO159JISX02121990 is the MIB identifier with IANA name JIS_X0212-1990.
+	//
+	// ISO-IR: International Register of Escape Sequences
+	// Note: The current registration authority is IPSJ/ITSCJ, Japan.
+	// Reference: RFC1345
+	ISO159JISX02121990 MIB = 98
+
+	// ISO646Danish is the MIB identifier with IANA name DS_2089.
+	//
+	// Danish Standard, DS 2089, February 1974
+	// Reference: RFC1345
+	ISO646Danish MIB = 99
+
+	// USDK is the MIB identifier with IANA name us-dk.
+	//
+	// Reference: RFC1345
+	USDK MIB = 100
+
+	// DKUS is the MIB identifier with IANA name dk-us.
+	//
+	// Reference: RFC1345
+	DKUS MIB = 101
+
+	// KSC5636 is the MIB identifier with IANA name KSC5636.
+	//
+	// Reference: RFC1345
+	KSC5636 MIB = 102
+
+	// Unicode11UTF7 is the MIB identifier with IANA name UNICODE-1-1-UTF-7.
+	//
+	// rfc1642
+	// Reference: RFC1642
+	Unicode11UTF7 MIB = 103
+
+	// ISO2022CN is the MIB identifier with IANA name ISO-2022-CN.
+	//
+	// rfc1922
+	// Reference: RFC1922
+	ISO2022CN MIB = 104
+
+	// ISO2022CNEXT is the MIB identifier with IANA name ISO-2022-CN-EXT.
+	//
+	// rfc1922
+	// Reference: RFC1922
+	ISO2022CNEXT MIB = 105
+
+	// UTF8 is the MIB identifier with IANA name UTF-8.
+	//
+	// rfc3629
+	// Reference: RFC3629
+	UTF8 MIB = 106
+
+	// ISO885913 is the MIB identifier with IANA name ISO-8859-13.
+	//
+	// ISO See https://www.iana.org/assignments/charset-reg/ISO-8859-13 https://www.iana.org/assignments/charset-reg/ISO-8859-13
+	ISO885913 MIB = 109
+
+	// ISO885914 is the MIB identifier with IANA name ISO-8859-14.
+	//
+	// ISO See https://www.iana.org/assignments/charset-reg/ISO-8859-14
+	ISO885914 MIB = 110
+
+	// ISO885915 is the MIB identifier with IANA name ISO-8859-15.
+	//
+	// ISO
+	// Please see: https://www.iana.org/assignments/charset-reg/ISO-8859-15
+	ISO885915 MIB = 111
+
+	// ISO885916 is the MIB identifier with IANA name ISO-8859-16.
+	//
+	// ISO
+	ISO885916 MIB = 112
+
+	// GBK is the MIB identifier with IANA name GBK.
+	//
+	// Chinese IT Standardization Technical Committee
+	// Please see: https://www.iana.org/assignments/charset-reg/GBK
+	GBK MIB = 113
+
+	// GB18030 is the MIB identifier with IANA name GB18030.
+	//
+	// Chinese IT Standardization Technical Committee
+	// Please see: https://www.iana.org/assignments/charset-reg/GB18030
+	GB18030 MIB = 114
+
+	// OSDEBCDICDF0415 is the MIB identifier with IANA name OSD_EBCDIC_DF04_15.
+	//
+	// Fujitsu-Siemens standard mainframe EBCDIC encoding
+	// Please see: https://www.iana.org/assignments/charset-reg/OSD-EBCDIC-DF04-15
+	OSDEBCDICDF0415 MIB = 115
+
+	// OSDEBCDICDF03IRV is the MIB identifier with IANA name OSD_EBCDIC_DF03_IRV.
+	//
+	// Fujitsu-Siemens standard mainframe EBCDIC encoding
+	// Please see: https://www.iana.org/assignments/charset-reg/OSD-EBCDIC-DF03-IRV
+	OSDEBCDICDF03IRV MIB = 116
+
+	// OSDEBCDICDF041 is the MIB identifier with IANA name OSD_EBCDIC_DF04_1.
+	//
+	// Fujitsu-Siemens standard mainframe EBCDIC encoding
+	// Please see: https://www.iana.org/assignments/charset-reg/OSD-EBCDIC-DF04-1
+	OSDEBCDICDF041 MIB = 117
+
+	// ISO115481 is the MIB identifier with IANA name ISO-11548-1.
+	//
+	// See https://www.iana.org/assignments/charset-reg/ISO-11548-1
+	ISO115481 MIB = 118
+
+	// KZ1048 is the MIB identifier with IANA name KZ-1048.
+	//
+	// See https://www.iana.org/assignments/charset-reg/KZ-1048
+	KZ1048 MIB = 119
+
+	// Unicode is the MIB identifier with IANA name ISO-10646-UCS-2.
+	//
+	// the 2-octet Basic Multilingual Plane, aka Unicode
+	// this needs to specify network byte order: the standard
+	// does not specify (it is a 16-bit integer space)
+	Unicode MIB = 1000
+
+	// UCS4 is the MIB identifier with IANA name ISO-10646-UCS-4.
+	//
+	// the full code space. (same comment about byte order,
+	// these are 31-bit numbers.
+	UCS4 MIB = 1001
+
+	// UnicodeASCII is the MIB identifier with IANA name ISO-10646-UCS-Basic.
+	//
+	// ASCII subset of Unicode.  Basic Latin = collection 1
+	// See ISO 10646, Appendix A
+	UnicodeASCII MIB = 1002
+
+	// UnicodeLatin1 is the MIB identifier with IANA name ISO-10646-Unicode-Latin1.
+	//
+	// ISO Latin-1 subset of Unicode. Basic Latin and Latin-1
+	// Supplement  = collections 1 and 2.  See ISO 10646,
+	// Appendix A.  See rfc1815 .
+	UnicodeLatin1 MIB = 1003
+
+	// UnicodeJapanese is the MIB identifier with IANA name ISO-10646-J-1.
+	//
+	// ISO 10646 Japanese, see rfc1815 .
+	UnicodeJapanese MIB = 1004
+
+	// UnicodeIBM1261 is the MIB identifier with IANA name ISO-Unicode-IBM-1261.
+	//
+	// IBM Latin-2, -3, -5, Extended Presentation Set, GCSGID: 1261
+	UnicodeIBM1261 MIB = 1005
+
+	// UnicodeIBM1268 is the MIB identifier with IANA name ISO-Unicode-IBM-1268.
+	//
+	// IBM Latin-4 Extended Presentation Set, GCSGID: 1268
+	UnicodeIBM1268 MIB = 1006
+
+	// UnicodeIBM1276 is the MIB identifier with IANA name ISO-Unicode-IBM-1276.
+	//
+	// IBM Cyrillic Greek Extended Presentation Set, GCSGID: 1276
+	UnicodeIBM1276 MIB = 1007
+
+	// UnicodeIBM1264 is the MIB identifier with IANA name ISO-Unicode-IBM-1264.
+	//
+	// IBM Arabic Presentation Set, GCSGID: 1264
+	UnicodeIBM1264 MIB = 1008
+
+	// UnicodeIBM1265 is the MIB identifier with IANA name ISO-Unicode-IBM-1265.
+	//
+	// IBM Hebrew Presentation Set, GCSGID: 1265
+	UnicodeIBM1265 MIB = 1009
+
+	// Unicode11 is the MIB identifier with IANA name UNICODE-1-1.
+	//
+	// rfc1641
+	// Reference: RFC1641
+	Unicode11 MIB = 1010
+
+	// SCSU is the MIB identifier with IANA name SCSU.
+	//
+	// SCSU See https://www.iana.org/assignments/charset-reg/SCSU
+	SCSU MIB = 1011
+
+	// UTF7 is the MIB identifier with IANA name UTF-7.
+	//
+	// rfc2152
+	// Reference: RFC2152
+	UTF7 MIB = 1012
+
+	// UTF16BE is the MIB identifier with IANA name UTF-16BE.
+	//
+	// rfc2781
+	// Reference: RFC2781
+	UTF16BE MIB = 1013
+
+	// UTF16LE is the MIB identifier with IANA name UTF-16LE.
+	//
+	// rfc2781
+	// Reference: RFC2781
+	UTF16LE MIB = 1014
+
+	// UTF16 is the MIB identifier with IANA name UTF-16.
+	//
+	// rfc2781
+	// Reference: RFC2781
+	UTF16 MIB = 1015
+
+	// CESU8 is the MIB identifier with IANA name CESU-8.
+	//
+	// https://www.unicode.org/reports/tr26
+	CESU8 MIB = 1016
+
+	// UTF32 is the MIB identifier with IANA name UTF-32.
+	//
+	// https://www.unicode.org/reports/tr19/
+	UTF32 MIB = 1017
+
+	// UTF32BE is the MIB identifier with IANA name UTF-32BE.
+	//
+	// https://www.unicode.org/reports/tr19/
+	UTF32BE MIB = 1018
+
+	// UTF32LE is the MIB identifier with IANA name UTF-32LE.
+	//
+	// https://www.unicode.org/reports/tr19/
+	UTF32LE MIB = 1019
+
+	// BOCU1 is the MIB identifier with IANA name BOCU-1.
+	//
+	// https://www.unicode.org/notes/tn6/
+	BOCU1 MIB = 1020
+
+	// Windows30Latin1 is the MIB identifier with IANA name ISO-8859-1-Windows-3.0-Latin-1.
+	//
+	// Extended ISO 8859-1 Latin-1 for Windows 3.0.
+	// PCL Symbol Set id: 9U
+	Windows30Latin1 MIB = 2000
+
+	// Windows31Latin1 is the MIB identifier with IANA name ISO-8859-1-Windows-3.1-Latin-1.
+	//
+	// Extended ISO 8859-1 Latin-1 for Windows 3.1.
+	// PCL Symbol Set id: 19U
+	Windows31Latin1 MIB = 2001
+
+	// Windows31Latin2 is the MIB identifier with IANA name ISO-8859-2-Windows-Latin-2.
+	//
+	// Extended ISO 8859-2.  Latin-2 for Windows 3.1.
+	// PCL Symbol Set id: 9E
+	Windows31Latin2 MIB = 2002
+
+	// Windows31Latin5 is the MIB identifier with IANA name ISO-8859-9-Windows-Latin-5.
+	//
+	// Extended ISO 8859-9.  Latin-5 for Windows 3.1
+	// PCL Symbol Set id: 5T
+	Windows31Latin5 MIB = 2003
+
+	// HPRoman8 is the MIB identifier with IANA name hp-roman8.
+	//
+	// LaserJet IIP Printer User's Manual,
+	// HP part no 33471-90901, Hewlet-Packard, June 1989.
+	// Reference: RFC1345
+	HPRoman8 MIB = 2004
+
+	// AdobeStandardEncoding is the MIB identifier with IANA name Adobe-Standard-Encoding.
+	//
+	// PostScript Language Reference Manual
+	// PCL Symbol Set id: 10J
+	AdobeStandardEncoding MIB = 2005
+
+	// VenturaUS is the MIB identifier with IANA name Ventura-US.
+	//
+	// Ventura US.  ASCII plus characters typically used in
+	// publishing, like pilcrow, copyright, registered, trade mark,
+	// section, dagger, and double dagger in the range A0 (hex)
+	// to FF (hex).
+	// PCL Symbol Set id: 14J
+	VenturaUS MIB = 2006
+
+	// VenturaInternational is the MIB identifier with IANA name Ventura-International.
+	//
+	// Ventura International.  ASCII plus coded characters similar
+	// to Roman8.
+	// PCL Symbol Set id: 13J
+	VenturaInternational MIB = 2007
+
+	// DECMCS is the MIB identifier with IANA name DEC-MCS.
+	//
+	// VAX/VMS User's Manual,
+	// Order Number: AI-Y517A-TE, April 1986.
+	// Reference: RFC1345
+	DECMCS MIB = 2008
+
+	// PC850Multilingual is the MIB identifier with IANA name IBM850.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	PC850Multilingual MIB = 2009
+
+	// PC8DanishNorwegian is the MIB identifier with IANA name PC8-Danish-Norwegian.
+	//
+	// PC Danish Norwegian
+	// 8-bit PC set for Danish Norwegian
+	// PCL Symbol Set id: 11U
+	PC8DanishNorwegian MIB = 2012
+
+	// PC862LatinHebrew is the MIB identifier with IANA name IBM862.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	PC862LatinHebrew MIB = 2013
+
+	// PC8Turkish is the MIB identifier with IANA name PC8-Turkish.
+	//
+	// PC Latin Turkish.  PCL Symbol Set id: 9T
+	PC8Turkish MIB = 2014
+
+	// IBMSymbols is the MIB identifier with IANA name IBM-Symbols.
+	//
+	// Presentation Set, CPGID: 259
+	IBMSymbols MIB = 2015
+
+	// IBMThai is the MIB identifier with IANA name IBM-Thai.
+	//
+	// Presentation Set, CPGID: 838
+	IBMThai MIB = 2016
+
+	// HPLegal is the MIB identifier with IANA name HP-Legal.
+	//
+	// PCL 5 Comparison Guide, Hewlett-Packard,
+	// HP part number 5961-0510, October 1992
+	// PCL Symbol Set id: 1U
+	HPLegal MIB = 2017
+
+	// HPPiFont is the MIB identifier with IANA name HP-Pi-font.
+	//
+	// PCL 5 Comparison Guide, Hewlett-Packard,
+	// HP part number 5961-0510, October 1992
+	// PCL Symbol Set id: 15U
+	HPPiFont MIB = 2018
+
+	// HPMath8 is the MIB identifier with IANA name HP-Math8.
+	//
+	// PCL 5 Comparison Guide, Hewlett-Packard,
+	// HP part number 5961-0510, October 1992
+	// PCL Symbol Set id: 8M
+	HPMath8 MIB = 2019
+
+	// HPPSMath is the MIB identifier with IANA name Adobe-Symbol-Encoding.
+	//
+	// PostScript Language Reference Manual
+	// PCL Symbol Set id: 5M
+	HPPSMath MIB = 2020
+
+	// HPDesktop is the MIB identifier with IANA name HP-DeskTop.
+	//
+	// PCL 5 Comparison Guide, Hewlett-Packard,
+	// HP part number 5961-0510, October 1992
+	// PCL Symbol Set id: 7J
+	HPDesktop MIB = 2021
+
+	// VenturaMath is the MIB identifier with IANA name Ventura-Math.
+	//
+	// PCL 5 Comparison Guide, Hewlett-Packard,
+	// HP part number 5961-0510, October 1992
+	// PCL Symbol Set id: 6M
+	VenturaMath MIB = 2022
+
+	// MicrosoftPublishing is the MIB identifier with IANA name Microsoft-Publishing.
+	//
+	// PCL 5 Comparison Guide, Hewlett-Packard,
+	// HP part number 5961-0510, October 1992
+	// PCL Symbol Set id: 6J
+	MicrosoftPublishing MIB = 2023
+
+	// Windows31J is the MIB identifier with IANA name Windows-31J.
+	//
+	// Windows Japanese.  A further extension of Shift_JIS
+	// to include NEC special characters (Row 13), NEC
+	// selection of IBM extensions (Rows 89 to 92), and IBM
+	// extensions (Rows 115 to 119).  The CCS's are
+	// JIS X0201:1997, JIS X0208:1997, and these extensions.
+	// This charset can be used for the top-level media type "text",
+	// but it is of limited or specialized use (see rfc2278 ).
+	// PCL Symbol Set id: 19K
+	Windows31J MIB = 2024
+
+	// GB2312 is the MIB identifier with IANA name GB2312 (MIME: GB2312).
+	//
+	// Chinese for People's Republic of China (PRC) mixed one byte,
+	// two byte set:
+	// 20-7E = one byte ASCII
+	// A1-FE = two byte PRC Kanji
+	// See GB 2312-80
+	// PCL Symbol Set Id: 18C
+	GB2312 MIB = 2025
+
+	// Big5 is the MIB identifier with IANA name Big5 (MIME: Big5).
+	//
+	// Chinese for Taiwan Multi-byte set.
+	// PCL Symbol Set Id: 18T
+	Big5 MIB = 2026
+
+	// Macintosh is the MIB identifier with IANA name macintosh.
+	//
+	// The Unicode Standard ver1.0, ISBN 0-201-56788-1, Oct 1991
+	// Reference: RFC1345
+	Macintosh MIB = 2027
+
+	// IBM037 is the MIB identifier with IANA name IBM037.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM037 MIB = 2028
+
+	// IBM038 is the MIB identifier with IANA name IBM038.
+	//
+	// IBM 3174 Character Set Ref, GA27-3831-02, March 1990
+	// Reference: RFC1345
+	IBM038 MIB = 2029
+
+	// IBM273 is the MIB identifier with IANA name IBM273.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM273 MIB = 2030
+
+	// IBM274 is the MIB identifier with IANA name IBM274.
+	//
+	// IBM 3174 Character Set Ref, GA27-3831-02, March 1990
+	// Reference: RFC1345
+	IBM274 MIB = 2031
+
+	// IBM275 is the MIB identifier with IANA name IBM275.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM275 MIB = 2032
+
+	// IBM277 is the MIB identifier with IANA name IBM277.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM277 MIB = 2033
+
+	// IBM278 is the MIB identifier with IANA name IBM278.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM278 MIB = 2034
+
+	// IBM280 is the MIB identifier with IANA name IBM280.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM280 MIB = 2035
+
+	// IBM281 is the MIB identifier with IANA name IBM281.
+	//
+	// IBM 3174 Character Set Ref, GA27-3831-02, March 1990
+	// Reference: RFC1345
+	IBM281 MIB = 2036
+
+	// IBM284 is the MIB identifier with IANA name IBM284.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM284 MIB = 2037
+
+	// IBM285 is the MIB identifier with IANA name IBM285.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM285 MIB = 2038
+
+	// IBM290 is the MIB identifier with IANA name IBM290.
+	//
+	// IBM 3174 Character Set Ref, GA27-3831-02, March 1990
+	// Reference: RFC1345
+	IBM290 MIB = 2039
+
+	// IBM297 is the MIB identifier with IANA name IBM297.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM297 MIB = 2040
+
+	// IBM420 is the MIB identifier with IANA name IBM420.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990,
+	// IBM NLS RM p 11-11
+	// Reference: RFC1345
+	IBM420 MIB = 2041
+
+	// IBM423 is the MIB identifier with IANA name IBM423.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM423 MIB = 2042
+
+	// IBM424 is the MIB identifier with IANA name IBM424.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM424 MIB = 2043
+
+	// PC8CodePage437 is the MIB identifier with IANA name IBM437.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	PC8CodePage437 MIB = 2011
+
+	// IBM500 is the MIB identifier with IANA name IBM500.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM500 MIB = 2044
+
+	// IBM851 is the MIB identifier with IANA name IBM851.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM851 MIB = 2045
+
+	// PCp852 is the MIB identifier with IANA name IBM852.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	PCp852 MIB = 2010
+
+	// IBM855 is the MIB identifier with IANA name IBM855.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM855 MIB = 2046
+
+	// IBM857 is the MIB identifier with IANA name IBM857.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM857 MIB = 2047
+
+	// IBM860 is the MIB identifier with IANA name IBM860.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM860 MIB = 2048
+
+	// IBM861 is the MIB identifier with IANA name IBM861.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM861 MIB = 2049
+
+	// IBM863 is the MIB identifier with IANA name IBM863.
+	//
+	// IBM Keyboard layouts and code pages, PN 07G4586 June 1991
+	// Reference: RFC1345
+	IBM863 MIB = 2050
+
+	// IBM864 is the MIB identifier with IANA name IBM864.
+	//
+	// IBM Keyboard layouts and code pages, PN 07G4586 June 1991
+	// Reference: RFC1345
+	IBM864 MIB = 2051
+
+	// IBM865 is the MIB identifier with IANA name IBM865.
+	//
+	// IBM DOS 3.3 Ref (Abridged), 94X9575 (Feb 1987)
+	// Reference: RFC1345
+	IBM865 MIB = 2052
+
+	// IBM868 is the MIB identifier with IANA name IBM868.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM868 MIB = 2053
+
+	// IBM869 is the MIB identifier with IANA name IBM869.
+	//
+	// IBM Keyboard layouts and code pages, PN 07G4586 June 1991
+	// Reference: RFC1345
+	IBM869 MIB = 2054
+
+	// IBM870 is the MIB identifier with IANA name IBM870.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM870 MIB = 2055
+
+	// IBM871 is the MIB identifier with IANA name IBM871.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM871 MIB = 2056
+
+	// IBM880 is the MIB identifier with IANA name IBM880.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM880 MIB = 2057
+
+	// IBM891 is the MIB identifier with IANA name IBM891.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM891 MIB = 2058
+
+	// IBM903 is the MIB identifier with IANA name IBM903.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM903 MIB = 2059
+
+	// IBBM904 is the MIB identifier with IANA name IBM904.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBBM904 MIB = 2060
+
+	// IBM905 is the MIB identifier with IANA name IBM905.
+	//
+	// IBM 3174 Character Set Ref, GA27-3831-02, March 1990
+	// Reference: RFC1345
+	IBM905 MIB = 2061
+
+	// IBM918 is the MIB identifier with IANA name IBM918.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM918 MIB = 2062
+
+	// IBM1026 is the MIB identifier with IANA name IBM1026.
+	//
+	// IBM NLS RM Vol2 SE09-8002-01, March 1990
+	// Reference: RFC1345
+	IBM1026 MIB = 2063
+
+	// IBMEBCDICATDE is the MIB identifier with IANA name EBCDIC-AT-DE.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	IBMEBCDICATDE MIB = 2064
+
+	// EBCDICATDEA is the MIB identifier with IANA name EBCDIC-AT-DE-A.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICATDEA MIB = 2065
+
+	// EBCDICCAFR is the MIB identifier with IANA name EBCDIC-CA-FR.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICCAFR MIB = 2066
+
+	// EBCDICDKNO is the MIB identifier with IANA name EBCDIC-DK-NO.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICDKNO MIB = 2067
+
+	// EBCDICDKNOA is the MIB identifier with IANA name EBCDIC-DK-NO-A.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICDKNOA MIB = 2068
+
+	// EBCDICFISE is the MIB identifier with IANA name EBCDIC-FI-SE.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICFISE MIB = 2069
+
+	// EBCDICFISEA is the MIB identifier with IANA name EBCDIC-FI-SE-A.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICFISEA MIB = 2070
+
+	// EBCDICFR is the MIB identifier with IANA name EBCDIC-FR.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICFR MIB = 2071
+
+	// EBCDICIT is the MIB identifier with IANA name EBCDIC-IT.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICIT MIB = 2072
+
+	// EBCDICPT is the MIB identifier with IANA name EBCDIC-PT.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICPT MIB = 2073
+
+	// EBCDICES is the MIB identifier with IANA name EBCDIC-ES.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICES MIB = 2074
+
+	// EBCDICESA is the MIB identifier with IANA name EBCDIC-ES-A.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICESA MIB = 2075
+
+	// EBCDICESS is the MIB identifier with IANA name EBCDIC-ES-S.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICESS MIB = 2076
+
+	// EBCDICUK is the MIB identifier with IANA name EBCDIC-UK.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICUK MIB = 2077
+
+	// EBCDICUS is the MIB identifier with IANA name EBCDIC-US.
+	//
+	// IBM 3270 Char Set Ref Ch 10, GA27-2837-9, April 1987
+	// Reference: RFC1345
+	EBCDICUS MIB = 2078
+
+	// Unknown8BiT is the MIB identifier with IANA name UNKNOWN-8BIT.
+	//
+	// Reference: RFC1428
+	Unknown8BiT MIB = 2079
+
+	// Mnemonic is the MIB identifier with IANA name MNEMONIC.
+	//
+	// rfc1345 , also known as "mnemonic+ascii+38"
+	// Reference: RFC1345
+	Mnemonic MIB = 2080
+
+	// Mnem is the MIB identifier with IANA name MNEM.
+	//
+	// rfc1345 , also known as "mnemonic+ascii+8200"
+	// Reference: RFC1345
+	Mnem MIB = 2081
+
+	// VISCII is the MIB identifier with IANA name VISCII.
+	//
+	// rfc1456
+	// Reference: RFC1456
+	VISCII MIB = 2082
+
+	// VIQR is the MIB identifier with IANA name VIQR.
+	//
+	// rfc1456
+	// Reference: RFC1456
+	VIQR MIB = 2083
+
+	// KOI8R is the MIB identifier with IANA name KOI8-R (MIME: KOI8-R).
+	//
+	// rfc1489 , based on GOST-19768-74, ISO-6937/8,
+	// INIS-Cyrillic, ISO-5427.
+	// Reference: RFC1489
+	KOI8R MIB = 2084
+
+	// HZGB2312 is the MIB identifier with IANA name HZ-GB-2312.
+	//
+	// rfc1842 , rfc1843 rfc1843 rfc1842
+	HZGB2312 MIB = 2085
+
+	// IBM866 is the MIB identifier with IANA name IBM866.
+	//
+	// IBM NLDG Volume 2 (SE09-8002-03) August 1994
+	IBM866 MIB = 2086
+
+	// PC775Baltic is the MIB identifier with IANA name IBM775.
+	//
+	// HP PCL 5 Comparison Guide (P/N 5021-0329) pp B-13, 1996
+	PC775Baltic MIB = 2087
+
+	// KOI8U is the MIB identifier with IANA name KOI8-U.
+	//
+	// rfc2319
+	// Reference: RFC2319
+	KOI8U MIB = 2088
+
+	// IBM00858 is the MIB identifier with IANA name IBM00858.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM00858
+	IBM00858 MIB = 2089
+
+	// IBM00924 is the MIB identifier with IANA name IBM00924.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM00924
+	IBM00924 MIB = 2090
+
+	// IBM01140 is the MIB identifier with IANA name IBM01140.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01140
+	IBM01140 MIB = 2091
+
+	// IBM01141 is the MIB identifier with IANA name IBM01141.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01141
+	IBM01141 MIB = 2092
+
+	// IBM01142 is the MIB identifier with IANA name IBM01142.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01142
+	IBM01142 MIB = 2093
+
+	// IBM01143 is the MIB identifier with IANA name IBM01143.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01143
+	IBM01143 MIB = 2094
+
+	// IBM01144 is the MIB identifier with IANA name IBM01144.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01144
+	IBM01144 MIB = 2095
+
+	// IBM01145 is the MIB identifier with IANA name IBM01145.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01145
+	IBM01145 MIB = 2096
+
+	// IBM01146 is the MIB identifier with IANA name IBM01146.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01146
+	IBM01146 MIB = 2097
+
+	// IBM01147 is the MIB identifier with IANA name IBM01147.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01147
+	IBM01147 MIB = 2098
+
+	// IBM01148 is the MIB identifier with IANA name IBM01148.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01148
+	IBM01148 MIB = 2099
+
+	// IBM01149 is the MIB identifier with IANA name IBM01149.
+	//
+	// IBM See https://www.iana.org/assignments/charset-reg/IBM01149
+	IBM01149 MIB = 2100
+
+	// Big5HKSCS is the MIB identifier with IANA name Big5-HKSCS.
+	//
+	// See https://www.iana.org/assignments/charset-reg/Big5-HKSCS
+	Big5HKSCS MIB = 2101
+
+	// IBM1047 is the MIB identifier with IANA name IBM1047.
+	//
+	// IBM1047 (EBCDIC Latin 1/Open Systems) https://www-1.ibm.com/servers/eserver/iseries/software/globalization/pdf/cp01047z.pdf
+	IBM1047 MIB = 2102
+
+	// PTCP154 is the MIB identifier with IANA name PTCP154.
+	//
+	// See https://www.iana.org/assignments/charset-reg/PTCP154
+	PTCP154 MIB = 2103
+
+	// Amiga1251 is the MIB identifier with IANA name Amiga-1251.
+	//
+	// See https://www.amiga.ultranet.ru/Amiga-1251.html
+	Amiga1251 MIB = 2104
+
+	// KOI7switched is the MIB identifier with IANA name KOI7-switched.
+	//
+	// See https://www.iana.org/assignments/charset-reg/KOI7-switched
+	KOI7switched MIB = 2105
+
+	// BRF is the MIB identifier with IANA name BRF.
+	//
+	// See https://www.iana.org/assignments/charset-reg/BRF
+	BRF MIB = 2106
+
+	// TSCII is the MIB identifier with IANA name TSCII.
+	//
+	// See https://www.iana.org/assignments/charset-reg/TSCII
+	TSCII MIB = 2107
+
+	// CP51932 is the MIB identifier with IANA name CP51932.
+	//
+	// See https://www.iana.org/assignments/charset-reg/CP51932
+	CP51932 MIB = 2108
+
+	// Windows874 is the MIB identifier with IANA name windows-874.
+	//
+	// See https://www.iana.org/assignments/charset-reg/windows-874
+	Windows874 MIB = 2109
+
+	// Windows1250 is the MIB identifier with IANA name windows-1250.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1250
+	Windows1250 MIB = 2250
+
+	// Windows1251 is the MIB identifier with IANA name windows-1251.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1251
+	Windows1251 MIB = 2251
+
+	// Windows1252 is the MIB identifier with IANA name windows-1252.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1252
+	Windows1252 MIB = 2252
+
+	// Windows1253 is the MIB identifier with IANA name windows-1253.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1253
+	Windows1253 MIB = 2253
+
+	// Windows1254 is the MIB identifier with IANA name windows-1254.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1254
+	Windows1254 MIB = 2254
+
+	// Windows1255 is the MIB identifier with IANA name windows-1255.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1255
+	Windows1255 MIB = 2255
+
+	// Windows1256 is the MIB identifier with IANA name windows-1256.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1256
+	Windows1256 MIB = 2256
+
+	// Windows1257 is the MIB identifier with IANA name windows-1257.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1257
+	Windows1257 MIB = 2257
+
+	// Windows1258 is the MIB identifier with IANA name windows-1258.
+	//
+	// Microsoft https://www.iana.org/assignments/charset-reg/windows-1258
+	Windows1258 MIB = 2258
+
+	// TIS620 is the MIB identifier with IANA name TIS-620.
+	//
+	// Thai Industrial Standards Institute (TISI)
+	TIS620 MIB = 2259
+
+	// CP50220 is the MIB identifier with IANA name CP50220.
+	//
+	// See https://www.iana.org/assignments/charset-reg/CP50220
+	CP50220 MIB = 2260
+)
diff --git a/vendor/golang.org/x/text/transform/transform.go b/vendor/golang.org/x/text/transform/transform.go
new file mode 100644
index 0000000..48ec64b
--- /dev/null
+++ b/vendor/golang.org/x/text/transform/transform.go
@@ -0,0 +1,709 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package transform provides reader and writer wrappers that transform the
+// bytes passing through as well as various transformations. Example
+// transformations provided by other packages include normalization and
+// conversion between character sets.
+package transform // import "golang.org/x/text/transform"
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"unicode/utf8"
+)
+
+var (
+	// ErrShortDst means that the destination buffer was too short to
+	// receive all of the transformed bytes.
+	ErrShortDst = errors.New("transform: short destination buffer")
+
+	// ErrShortSrc means that the source buffer has insufficient data to
+	// complete the transformation.
+	ErrShortSrc = errors.New("transform: short source buffer")
+
+	// ErrEndOfSpan means that the input and output (the transformed input)
+	// are not identical.
+	ErrEndOfSpan = errors.New("transform: input and output are not identical")
+
+	// errInconsistentByteCount means that Transform returned success (nil
+	// error) but also returned nSrc inconsistent with the src argument.
+	errInconsistentByteCount = errors.New("transform: inconsistent byte count returned")
+
+	// errShortInternal means that an internal buffer is not large enough
+	// to make progress and the Transform operation must be aborted.
+	errShortInternal = errors.New("transform: short internal buffer")
+)
+
+// Transformer transforms bytes.
+type Transformer interface {
+	// Transform writes to dst the transformed bytes read from src, and
+	// returns the number of dst bytes written and src bytes read. The
+	// atEOF argument tells whether src represents the last bytes of the
+	// input.
+	//
+	// Callers should always process the nDst bytes produced and account
+	// for the nSrc bytes consumed before considering the error err.
+	//
+	// A nil error means that all of the transformed bytes (whether freshly
+	// transformed from src or left over from previous Transform calls)
+	// were written to dst. A nil error can be returned regardless of
+	// whether atEOF is true. If err is nil then nSrc must equal len(src);
+	// the converse is not necessarily true.
+	//
+	// ErrShortDst means that dst was too short to receive all of the
+	// transformed bytes. ErrShortSrc means that src had insufficient data
+	// to complete the transformation. If both conditions apply, then
+	// either error may be returned. Other than the error conditions listed
+	// here, implementations are free to report other errors that arise.
+	Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error)
+
+	// Reset resets the state and allows a Transformer to be reused.
+	Reset()
+}
+
+// SpanningTransformer extends the Transformer interface with a Span method
+// that determines how much of the input already conforms to the Transformer.
+type SpanningTransformer interface {
+	Transformer
+
+	// Span returns a position in src such that transforming src[:n] results in
+	// identical output src[:n] for these bytes. It does not necessarily return
+	// the largest such n. The atEOF argument tells whether src represents the
+	// last bytes of the input.
+	//
+	// Callers should always account for the n bytes consumed before
+	// considering the error err.
+	//
+	// A nil error means that all input bytes are known to be identical to the
+	// output produced by the Transformer. A nil error can be returned
+	// regardless of whether atEOF is true. If err is nil, then n must
+	// equal len(src); the converse is not necessarily true.
+	//
+	// ErrEndOfSpan means that the Transformer output may differ from the
+	// input after n bytes. Note that n may be len(src), meaning that the output
+	// would contain additional bytes after otherwise identical output.
+	// ErrShortSrc means that src had insufficient data to determine whether the
+	// remaining bytes would change. Other than the error conditions listed
+	// here, implementations are free to report other errors that arise.
+	//
+	// Calling Span can modify the Transformer state as a side effect. In
+	// effect, it does the transformation just as calling Transform would, only
+	// without copying to a destination buffer and only up to a point it can
+	// determine the input and output bytes are the same. This is obviously more
+	// limited than calling Transform, but can be more efficient in terms of
+	// copying and allocating buffers. Calls to Span and Transform may be
+	// interleaved.
+	Span(src []byte, atEOF bool) (n int, err error)
+}
+
+// NopResetter can be embedded by implementations of Transformer to add a nop
+// Reset method.
+type NopResetter struct{}
+
+// Reset implements the Reset method of the Transformer interface.
+func (NopResetter) Reset() {}
+
+// Reader wraps another io.Reader by transforming the bytes read.
+type Reader struct {
+	r   io.Reader
+	t   Transformer
+	err error
+
+	// dst[dst0:dst1] contains bytes that have been transformed by t but
+	// not yet copied out via Read.
+	dst        []byte
+	dst0, dst1 int
+
+	// src[src0:src1] contains bytes that have been read from r but not
+	// yet transformed through t.
+	src        []byte
+	src0, src1 int
+
+	// transformComplete is whether the transformation is complete,
+	// regardless of whether or not it was successful.
+	transformComplete bool
+}
+
+const defaultBufSize = 4096
+
+// NewReader returns a new Reader that wraps r by transforming the bytes read
+// via t. It calls Reset on t.
+func NewReader(r io.Reader, t Transformer) *Reader {
+	t.Reset()
+	return &Reader{
+		r:   r,
+		t:   t,
+		dst: make([]byte, defaultBufSize),
+		src: make([]byte, defaultBufSize),
+	}
+}
+
+// Read implements the io.Reader interface.
+func (r *Reader) Read(p []byte) (int, error) {
+	n, err := 0, error(nil)
+	for {
+		// Copy out any transformed bytes and return the final error if we are done.
+		if r.dst0 != r.dst1 {
+			n = copy(p, r.dst[r.dst0:r.dst1])
+			r.dst0 += n
+			if r.dst0 == r.dst1 && r.transformComplete {
+				return n, r.err
+			}
+			return n, nil
+		} else if r.transformComplete {
+			return 0, r.err
+		}
+
+		// Try to transform some source bytes, or to flush the transformer if we
+		// are out of source bytes. We do this even if r.r.Read returned an error.
+		// As the io.Reader documentation says, "process the n > 0 bytes returned
+		// before considering the error".
+		if r.src0 != r.src1 || r.err != nil {
+			r.dst0 = 0
+			r.dst1, n, err = r.t.Transform(r.dst, r.src[r.src0:r.src1], r.err == io.EOF)
+			r.src0 += n
+
+			switch {
+			case err == nil:
+				if r.src0 != r.src1 {
+					r.err = errInconsistentByteCount
+				}
+				// The Transform call was successful; we are complete if we
+				// cannot read more bytes into src.
+				r.transformComplete = r.err != nil
+				continue
+			case err == ErrShortDst && (r.dst1 != 0 || n != 0):
+				// Make room in dst by copying out, and try again.
+				continue
+			case err == ErrShortSrc && r.src1-r.src0 != len(r.src) && r.err == nil:
+				// Read more bytes into src via the code below, and try again.
+			default:
+				r.transformComplete = true
+				// The reader error (r.err) takes precedence over the
+				// transformer error (err) unless r.err is nil or io.EOF.
+				if r.err == nil || r.err == io.EOF {
+					r.err = err
+				}
+				continue
+			}
+		}
+
+		// Move any untransformed source bytes to the start of the buffer
+		// and read more bytes.
+		if r.src0 != 0 {
+			r.src0, r.src1 = 0, copy(r.src, r.src[r.src0:r.src1])
+		}
+		n, r.err = r.r.Read(r.src[r.src1:])
+		r.src1 += n
+	}
+}
+
+// TODO: implement ReadByte (and ReadRune??).
+
+// Writer wraps another io.Writer by transforming the bytes read.
+// The user needs to call Close to flush unwritten bytes that may
+// be buffered.
+type Writer struct {
+	w   io.Writer
+	t   Transformer
+	dst []byte
+
+	// src[:n] contains bytes that have not yet passed through t.
+	src []byte
+	n   int
+}
+
+// NewWriter returns a new Writer that wraps w by transforming the bytes written
+// via t. It calls Reset on t.
+func NewWriter(w io.Writer, t Transformer) *Writer {
+	t.Reset()
+	return &Writer{
+		w:   w,
+		t:   t,
+		dst: make([]byte, defaultBufSize),
+		src: make([]byte, defaultBufSize),
+	}
+}
+
+// Write implements the io.Writer interface. If there are not enough
+// bytes available to complete a Transform, the bytes will be buffered
+// for the next write. Call Close to convert the remaining bytes.
+func (w *Writer) Write(data []byte) (n int, err error) {
+	src := data
+	if w.n > 0 {
+		// Append bytes from data to the last remainder.
+		// TODO: limit the amount copied on first try.
+		n = copy(w.src[w.n:], data)
+		w.n += n
+		src = w.src[:w.n]
+	}
+	for {
+		nDst, nSrc, err := w.t.Transform(w.dst, src, false)
+		if _, werr := w.w.Write(w.dst[:nDst]); werr != nil {
+			return n, werr
+		}
+		src = src[nSrc:]
+		if w.n == 0 {
+			n += nSrc
+		} else if len(src) <= n {
+			// Enough bytes from w.src have been consumed. We make src point
+			// to data instead to reduce the copying.
+			w.n = 0
+			n -= len(src)
+			src = data[n:]
+			if n < len(data) && (err == nil || err == ErrShortSrc) {
+				continue
+			}
+		}
+		switch err {
+		case ErrShortDst:
+			// This error is okay as long as we are making progress.
+			if nDst > 0 || nSrc > 0 {
+				continue
+			}
+		case ErrShortSrc:
+			if len(src) < len(w.src) {
+				m := copy(w.src, src)
+				// If w.n > 0, bytes from data were already copied to w.src and n
+				// was already set to the number of bytes consumed.
+				if w.n == 0 {
+					n += m
+				}
+				w.n = m
+				err = nil
+			} else if nDst > 0 || nSrc > 0 {
+				// Not enough buffer to store the remainder. Keep processing as
+				// long as there is progress. Without this case, transforms that
+				// require a lookahead larger than the buffer may result in an
+				// error. This is not something one may expect to be common in
+				// practice, but it may occur when buffers are set to small
+				// sizes during testing.
+				continue
+			}
+		case nil:
+			if w.n > 0 {
+				err = errInconsistentByteCount
+			}
+		}
+		return n, err
+	}
+}
+
+// Close implements the io.Closer interface.
+func (w *Writer) Close() error {
+	src := w.src[:w.n]
+	for {
+		nDst, nSrc, err := w.t.Transform(w.dst, src, true)
+		if _, werr := w.w.Write(w.dst[:nDst]); werr != nil {
+			return werr
+		}
+		if err != ErrShortDst {
+			return err
+		}
+		src = src[nSrc:]
+	}
+}
+
+type nop struct{ NopResetter }
+
+func (nop) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	n := copy(dst, src)
+	if n < len(src) {
+		err = ErrShortDst
+	}
+	return n, n, err
+}
+
+func (nop) Span(src []byte, atEOF bool) (n int, err error) {
+	return len(src), nil
+}
+
+type discard struct{ NopResetter }
+
+func (discard) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	return 0, len(src), nil
+}
+
+var (
+	// Discard is a Transformer for which all Transform calls succeed
+	// by consuming all bytes and writing nothing.
+	Discard Transformer = discard{}
+
+	// Nop is a SpanningTransformer that copies src to dst.
+	Nop SpanningTransformer = nop{}
+)
+
+// chain is a sequence of links. A chain with N Transformers has N+1 links and
+// N+1 buffers. Of those N+1 buffers, the first and last are the src and dst
+// buffers given to chain.Transform and the middle N-1 buffers are intermediate
+// buffers owned by the chain. The i'th link transforms bytes from the i'th
+// buffer chain.link[i].b at read offset chain.link[i].p to the i+1'th buffer
+// chain.link[i+1].b at write offset chain.link[i+1].n, for i in [0, N).
+type chain struct {
+	link []link
+	err  error
+	// errStart is the index at which the error occurred plus 1. Processing
+	// errStart at this level at the next call to Transform. As long as
+	// errStart > 0, chain will not consume any more source bytes.
+	errStart int
+}
+
+func (c *chain) fatalError(errIndex int, err error) {
+	if i := errIndex + 1; i > c.errStart {
+		c.errStart = i
+		c.err = err
+	}
+}
+
+type link struct {
+	t Transformer
+	// b[p:n] holds the bytes to be transformed by t.
+	b []byte
+	p int
+	n int
+}
+
+func (l *link) src() []byte {
+	return l.b[l.p:l.n]
+}
+
+func (l *link) dst() []byte {
+	return l.b[l.n:]
+}
+
+// Chain returns a Transformer that applies t in sequence.
+func Chain(t ...Transformer) Transformer {
+	if len(t) == 0 {
+		return nop{}
+	}
+	c := &chain{link: make([]link, len(t)+1)}
+	for i, tt := range t {
+		c.link[i].t = tt
+	}
+	// Allocate intermediate buffers.
+	b := make([][defaultBufSize]byte, len(t)-1)
+	for i := range b {
+		c.link[i+1].b = b[i][:]
+	}
+	return c
+}
+
+// Reset resets the state of Chain. It calls Reset on all the Transformers.
+func (c *chain) Reset() {
+	for i, l := range c.link {
+		if l.t != nil {
+			l.t.Reset()
+		}
+		c.link[i].p, c.link[i].n = 0, 0
+	}
+}
+
+// TODO: make chain use Span (is going to be fun to implement!)
+
+// Transform applies the transformers of c in sequence.
+func (c *chain) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	// Set up src and dst in the chain.
+	srcL := &c.link[0]
+	dstL := &c.link[len(c.link)-1]
+	srcL.b, srcL.p, srcL.n = src, 0, len(src)
+	dstL.b, dstL.n = dst, 0
+	var lastFull, needProgress bool // for detecting progress
+
+	// i is the index of the next Transformer to apply, for i in [low, high].
+	// low is the lowest index for which c.link[low] may still produce bytes.
+	// high is the highest index for which c.link[high] has a Transformer.
+	// The error returned by Transform determines whether to increase or
+	// decrease i. We try to completely fill a buffer before converting it.
+	for low, i, high := c.errStart, c.errStart, len(c.link)-2; low <= i && i <= high; {
+		in, out := &c.link[i], &c.link[i+1]
+		nDst, nSrc, err0 := in.t.Transform(out.dst(), in.src(), atEOF && low == i)
+		out.n += nDst
+		in.p += nSrc
+		if i > 0 && in.p == in.n {
+			in.p, in.n = 0, 0
+		}
+		needProgress, lastFull = lastFull, false
+		switch err0 {
+		case ErrShortDst:
+			// Process the destination buffer next. Return if we are already
+			// at the high index.
+			if i == high {
+				return dstL.n, srcL.p, ErrShortDst
+			}
+			if out.n != 0 {
+				i++
+				// If the Transformer at the next index is not able to process any
+				// source bytes there is nothing that can be done to make progress
+				// and the bytes will remain unprocessed. lastFull is used to
+				// detect this and break out of the loop with a fatal error.
+				lastFull = true
+				continue
+			}
+			// The destination buffer was too small, but is completely empty.
+			// Return a fatal error as this transformation can never complete.
+			c.fatalError(i, errShortInternal)
+		case ErrShortSrc:
+			if i == 0 {
+				// Save ErrShortSrc in err. All other errors take precedence.
+				err = ErrShortSrc
+				break
+			}
+			// Source bytes were depleted before filling up the destination buffer.
+			// Verify we made some progress, move the remaining bytes to the errStart
+			// and try to get more source bytes.
+			if needProgress && nSrc == 0 || in.n-in.p == len(in.b) {
+				// There were not enough source bytes to proceed while the source
+				// buffer cannot hold any more bytes. Return a fatal error as this
+				// transformation can never complete.
+				c.fatalError(i, errShortInternal)
+				break
+			}
+			// in.b is an internal buffer and we can make progress.
+			in.p, in.n = 0, copy(in.b, in.src())
+			fallthrough
+		case nil:
+			// if i == low, we have depleted the bytes at index i or any lower levels.
+			// In that case we increase low and i. In all other cases we decrease i to
+			// fetch more bytes before proceeding to the next index.
+			if i > low {
+				i--
+				continue
+			}
+		default:
+			c.fatalError(i, err0)
+		}
+		// Exhausted level low or fatal error: increase low and continue
+		// to process the bytes accepted so far.
+		i++
+		low = i
+	}
+
+	// If c.errStart > 0, this means we found a fatal error.  We will clear
+	// all upstream buffers. At this point, no more progress can be made
+	// downstream, as Transform would have bailed while handling ErrShortDst.
+	if c.errStart > 0 {
+		for i := 1; i < c.errStart; i++ {
+			c.link[i].p, c.link[i].n = 0, 0
+		}
+		err, c.errStart, c.err = c.err, 0, nil
+	}
+	return dstL.n, srcL.p, err
+}
+
+// Deprecated: Use runes.Remove instead.
+func RemoveFunc(f func(r rune) bool) Transformer {
+	return removeF(f)
+}
+
+type removeF func(r rune) bool
+
+func (removeF) Reset() {}
+
+// Transform implements the Transformer interface.
+func (t removeF) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) {
+	for r, sz := rune(0), 0; len(src) > 0; src = src[sz:] {
+
+		if r = rune(src[0]); r < utf8.RuneSelf {
+			sz = 1
+		} else {
+			r, sz = utf8.DecodeRune(src)
+
+			if sz == 1 {
+				// Invalid rune.
+				if !atEOF && !utf8.FullRune(src) {
+					err = ErrShortSrc
+					break
+				}
+				// We replace illegal bytes with RuneError. Not doing so might
+				// otherwise turn a sequence of invalid UTF-8 into valid UTF-8.
+				// The resulting byte sequence may subsequently contain runes
+				// for which t(r) is true that were passed unnoticed.
+				if !t(r) {
+					if nDst+3 > len(dst) {
+						err = ErrShortDst
+						break
+					}
+					nDst += copy(dst[nDst:], "\uFFFD")
+				}
+				nSrc++
+				continue
+			}
+		}
+
+		if !t(r) {
+			if nDst+sz > len(dst) {
+				err = ErrShortDst
+				break
+			}
+			nDst += copy(dst[nDst:], src[:sz])
+		}
+		nSrc += sz
+	}
+	return
+}
+
+// grow returns a new []byte that is longer than b, and copies the first n bytes
+// of b to the start of the new slice.
+func grow(b []byte, n int) []byte {
+	m := len(b)
+	if m <= 32 {
+		m = 64
+	} else if m <= 256 {
+		m *= 2
+	} else {
+		m += m >> 1
+	}
+	buf := make([]byte, m)
+	copy(buf, b[:n])
+	return buf
+}
+
+const initialBufSize = 128
+
+// String returns a string with the result of converting s[:n] using t, where
+// n <= len(s). If err == nil, n will be len(s). It calls Reset on t.
+func String(t Transformer, s string) (result string, n int, err error) {
+	t.Reset()
+	if s == "" {
+		// Fast path for the common case for empty input. Results in about a
+		// 86% reduction of running time for BenchmarkStringLowerEmpty.
+		if _, _, err := t.Transform(nil, nil, true); err == nil {
+			return "", 0, nil
+		}
+	}
+
+	// Allocate only once. Note that both dst and src escape when passed to
+	// Transform.
+	buf := [2 * initialBufSize]byte{}
+	dst := buf[:initialBufSize:initialBufSize]
+	src := buf[initialBufSize : 2*initialBufSize]
+
+	// The input string s is transformed in multiple chunks (starting with a
+	// chunk size of initialBufSize). nDst and nSrc are per-chunk (or
+	// per-Transform-call) indexes, pDst and pSrc are overall indexes.
+	nDst, nSrc := 0, 0
+	pDst, pSrc := 0, 0
+
+	// pPrefix is the length of a common prefix: the first pPrefix bytes of the
+	// result will equal the first pPrefix bytes of s. It is not guaranteed to
+	// be the largest such value, but if pPrefix, len(result) and len(s) are
+	// all equal after the final transform (i.e. calling Transform with atEOF
+	// being true returned nil error) then we don't need to allocate a new
+	// result string.
+	pPrefix := 0
+	for {
+		// Invariant: pDst == pPrefix && pSrc == pPrefix.
+
+		n := copy(src, s[pSrc:])
+		nDst, nSrc, err = t.Transform(dst, src[:n], pSrc+n == len(s))
+		pDst += nDst
+		pSrc += nSrc
+
+		// TODO:  let transformers implement an optional Spanner interface, akin
+		// to norm's QuickSpan. This would even allow us to avoid any allocation.
+		if !bytes.Equal(dst[:nDst], src[:nSrc]) {
+			break
+		}
+		pPrefix = pSrc
+		if err == ErrShortDst {
+			// A buffer can only be short if a transformer modifies its input.
+			break
+		} else if err == ErrShortSrc {
+			if nSrc == 0 {
+				// No progress was made.
+				break
+			}
+			// Equal so far and !atEOF, so continue checking.
+		} else if err != nil || pPrefix == len(s) {
+			return string(s[:pPrefix]), pPrefix, err
+		}
+	}
+	// Post-condition: pDst == pPrefix + nDst && pSrc == pPrefix + nSrc.
+
+	// We have transformed the first pSrc bytes of the input s to become pDst
+	// transformed bytes. Those transformed bytes are discontiguous: the first
+	// pPrefix of them equal s[:pPrefix] and the last nDst of them equal
+	// dst[:nDst]. We copy them around, into a new dst buffer if necessary, so
+	// that they become one contiguous slice: dst[:pDst].
+	if pPrefix != 0 {
+		newDst := dst
+		if pDst > len(newDst) {
+			newDst = make([]byte, len(s)+nDst-nSrc)
+		}
+		copy(newDst[pPrefix:pDst], dst[:nDst])
+		copy(newDst[:pPrefix], s[:pPrefix])
+		dst = newDst
+	}
+
+	// Prevent duplicate Transform calls with atEOF being true at the end of
+	// the input. Also return if we have an unrecoverable error.
+	if (err == nil && pSrc == len(s)) ||
+		(err != nil && err != ErrShortDst && err != ErrShortSrc) {
+		return string(dst[:pDst]), pSrc, err
+	}
+
+	// Transform the remaining input, growing dst and src buffers as necessary.
+	for {
+		n := copy(src, s[pSrc:])
+		atEOF := pSrc+n == len(s)
+		nDst, nSrc, err := t.Transform(dst[pDst:], src[:n], atEOF)
+		pDst += nDst
+		pSrc += nSrc
+
+		// If we got ErrShortDst or ErrShortSrc, do not grow as long as we can
+		// make progress. This may avoid excessive allocations.
+		if err == ErrShortDst {
+			if nDst == 0 {
+				dst = grow(dst, pDst)
+			}
+		} else if err == ErrShortSrc {
+			if atEOF {
+				return string(dst[:pDst]), pSrc, err
+			}
+			if nSrc == 0 {
+				src = grow(src, 0)
+			}
+		} else if err != nil || pSrc == len(s) {
+			return string(dst[:pDst]), pSrc, err
+		}
+	}
+}
+
+// Bytes returns a new byte slice with the result of converting b[:n] using t,
+// where n <= len(b). If err == nil, n will be len(b). It calls Reset on t.
+func Bytes(t Transformer, b []byte) (result []byte, n int, err error) {
+	return doAppend(t, 0, make([]byte, len(b)), b)
+}
+
+// Append appends the result of converting src[:n] using t to dst, where
+// n <= len(src), If err == nil, n will be len(src). It calls Reset on t.
+func Append(t Transformer, dst, src []byte) (result []byte, n int, err error) {
+	if len(dst) == cap(dst) {
+		n := len(src) + len(dst) // It is okay for this to be 0.
+		b := make([]byte, n)
+		dst = b[:copy(b, dst)]
+	}
+	return doAppend(t, len(dst), dst[:cap(dst)], src)
+}
+
+func doAppend(t Transformer, pDst int, dst, src []byte) (result []byte, n int, err error) {
+	t.Reset()
+	pSrc := 0
+	for {
+		nDst, nSrc, err := t.Transform(dst[pDst:], src[pSrc:], true)
+		pDst += nDst
+		pSrc += nSrc
+		if err != ErrShortDst {
+			return dst[:pDst], pSrc, err
+		}
+
+		// Grow the destination buffer, but do not grow as long as we can make
+		// progress. This may avoid excessive allocations.
+		if nDst == 0 {
+			dst = grow(dst, pDst)
+		}
+	}
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index cbc9c0d..7fdf871 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -29,6 +29,50 @@ github.com/creack/pty
 # github.com/fatih/color v1.13.0
 ## explicit; go 1.13
 github.com/fatih/color
+# github.com/gdamore/encoding v1.0.0
+## explicit; go 1.9
+github.com/gdamore/encoding
+# github.com/gdamore/tcell/v2 v2.4.0
+## explicit; go 1.12
+github.com/gdamore/tcell/v2
+github.com/gdamore/tcell/v2/terminfo
+github.com/gdamore/tcell/v2/terminfo/a/aixterm
+github.com/gdamore/tcell/v2/terminfo/a/alacritty
+github.com/gdamore/tcell/v2/terminfo/a/ansi
+github.com/gdamore/tcell/v2/terminfo/b/beterm
+github.com/gdamore/tcell/v2/terminfo/base
+github.com/gdamore/tcell/v2/terminfo/c/cygwin
+github.com/gdamore/tcell/v2/terminfo/d/dtterm
+github.com/gdamore/tcell/v2/terminfo/dynamic
+github.com/gdamore/tcell/v2/terminfo/e/emacs
+github.com/gdamore/tcell/v2/terminfo/extended
+github.com/gdamore/tcell/v2/terminfo/f/foot
+github.com/gdamore/tcell/v2/terminfo/g/gnome
+github.com/gdamore/tcell/v2/terminfo/h/hpterm
+github.com/gdamore/tcell/v2/terminfo/k/konsole
+github.com/gdamore/tcell/v2/terminfo/k/kterm
+github.com/gdamore/tcell/v2/terminfo/l/linux
+github.com/gdamore/tcell/v2/terminfo/p/pcansi
+github.com/gdamore/tcell/v2/terminfo/r/rxvt
+github.com/gdamore/tcell/v2/terminfo/s/screen
+github.com/gdamore/tcell/v2/terminfo/s/simpleterm
+github.com/gdamore/tcell/v2/terminfo/s/sun
+github.com/gdamore/tcell/v2/terminfo/t/termite
+github.com/gdamore/tcell/v2/terminfo/t/tmux
+github.com/gdamore/tcell/v2/terminfo/v/vt100
+github.com/gdamore/tcell/v2/terminfo/v/vt102
+github.com/gdamore/tcell/v2/terminfo/v/vt220
+github.com/gdamore/tcell/v2/terminfo/v/vt320
+github.com/gdamore/tcell/v2/terminfo/v/vt400
+github.com/gdamore/tcell/v2/terminfo/v/vt420
+github.com/gdamore/tcell/v2/terminfo/v/vt52
+github.com/gdamore/tcell/v2/terminfo/w/wy50
+github.com/gdamore/tcell/v2/terminfo/w/wy60
+github.com/gdamore/tcell/v2/terminfo/w/wy99_ansi
+github.com/gdamore/tcell/v2/terminfo/x/xfce
+github.com/gdamore/tcell/v2/terminfo/x/xterm
+github.com/gdamore/tcell/v2/terminfo/x/xterm_kitty
+github.com/gdamore/tcell/v2/terminfo/x/xterm_termite
 # github.com/gen2brain/beeep v0.0.0-20210529141713-5586760f0cc1
 ## explicit; go 1.14
 github.com/gen2brain/beeep
@@ -56,6 +100,9 @@ github.com/inconshreveable/mousetrap
 # github.com/jeandeaual/go-locale v0.0.0-20210323163322-5cf4ff553a8d
 ## explicit; go 1.12
 github.com/jeandeaual/go-locale
+# github.com/lucasb-eyer/go-colorful v1.0.3
+## explicit; go 1.12
+github.com/lucasb-eyer/go-colorful
 # github.com/maruel/panicparse v1.6.1
 ## explicit; go 1.11
 github.com/maruel/panicparse/stack
@@ -73,12 +120,6 @@ github.com/mattn/go-runewidth
 github.com/miguelmota/go-coinmarketcap/pro/v1
 github.com/miguelmota/go-coinmarketcap/v2
 github.com/miguelmota/go-coinmarketcap/v2/types
-# github.com/miguelmota/gocui v0.4.2
-## explicit; go 1.13
-github.com/miguelmota/gocui
-# github.com/miguelmota/termbox-go v0.0.0-20191229070316-58d4fcbce2a7
-## explicit
-github.com/miguelmota/termbox-go
 # github.com/mitchellh/go-wordwrap v1.0.1
 ## explicit; go 1.14
 github.com/mitchellh/go-wordwrap
@@ -129,11 +170,17 @@ golang.org/x/net/html/atom
 ## explicit; go 1.17
 golang.org/x/sys/cpu
 golang.org/x/sys/internal/unsafeheader
+golang.org/x/sys/plan9
 golang.org/x/sys/unix
 golang.org/x/sys/windows
 golang.org/x/sys/windows/registry
+# golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf
+## explicit; go 1.11
+golang.org/x/term
 # golang.org/x/text v0.3.7
 ## explicit; go 1.17
+golang.org/x/text/encoding
+golang.org/x/text/encoding/internal/identifier
 golang.org/x/text/feature/plural
 golang.org/x/text/internal
 golang.org/x/text/internal/catmsg
@@ -146,3 +193,4 @@ golang.org/x/text/internal/tag
 golang.org/x/text/language
 golang.org/x/text/message
 golang.org/x/text/message/catalog
+golang.org/x/text/transform