Require explicit version number for asciicast "version" column

db/migrate/20150228174314_remove_default_from_asciicasts_version.rb

@@ -0,0 +1,5 @@
+class RemoveDefaultFromAsciicastsVersion < ActiveRecord::Migration
+  def change
+    change_column_default :asciicasts, :version, nil
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150227112949) do
+ActiveRecord::Schema.define(version: 20150228174314) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -53,7 +53,7 @@ ActiveRecord::Schema.define(version: 20150227112949) do
     t.string   "user_agent"
     t.string   "theme_name"
     t.float    "snapshot_at"
-    t.integer  "version",          default: 0,     null: false
+    t.integer  "version",                          null: false
     t.string   "file"
   end