* For #1063 - Adds feature flag and pref for new tab tray
* For #1063 - Swaps add tab to tab tray button when newTabTray is enabled
* For #1063 - Creates hidden preference to use new tab tray
* For #1063 - Hides tabs on home screen when setting is enabled
* For #1063 - Navigate to new tab tray from browser with setting enabled
* For #1063 - Fixes regression where we dont show the new tab message with no tabs and no collections
* For #1063 - Fixes crash when toggling to private mode on the home screen
* For #1063 - combines both settings. Cleans up lint errors
* For #5577 - Adds button to add a new search engine
* For #5577 - Adds custom engine store
* For #5577 - Creates a custom SearchEngineProvider
* For #5577 - Gives the ability to delete search engines
* For #5577 - Adds the UI to add a custom search engine
* For #5577 - Adds form to create a custom search engine
* For #5577 - Adds the ability to add a custom search engine
* For #5577 - Adds the ability to delete custom search engines
* For #5577 - Selects the first element on the add custom search engine screen
* For #5577 - Prevents adding a search engine that already exists
* For #5577 - Styles the add search engine preference
* For #5577 - Makes the name check case-insensitive
* For #5577 - Fix bug where home screen doesnt see new search engines
* For #5577 - Moves Search URL validation to its own type
* For #5577 - Fixes linting errors
* For #5577 - Adds the ability to edit a custom search engine
* For #5577 - Allows the user to edit a serach engine even when it is the last item in the list
* For #5577 - Adds an undo snackbar when deleting a search engine
* For #5577 - Moves all of the strings to be translated
* For #5577 - Fixes bug when deleting your default search engine
* For #5577 - Puts adding search engines behind a feature flag
* For #5577 - Navigate to custom search engine SUMO article when tapping learn more
* For #5577 - Fixes nits
* For #5577 - Uses concept-fetch to validate search string
* For #5577 - Adds string resources for the cannot reach error state
Adam Novak
ekager
Jeff Boek
Gabriel Luong
Jonathan Almeida
mcarare
Sören Hentzschel
David Walsh
Emily Kager
Josh Vocal
ValentinTimisica
Colin Lee
Yeon Taek Jeong
Tiger Oakes
mheubusch
Sawyer Blatz