Rewrite touch input handling. Movement is now relative instead of absolute. This makes the game more playable on non-mobile touch screens since the user won't have to obscure their view of the playfield.
Add support for landscape orientation on Android.
Fix issue with input system that could cause controller states to read incorrectly under certain circumstances.
Add loading screen.
Fix bug which would cause touch input to stop working on Windows after a short amount of time.
Don't show the leaderboard screen when quitting the game from the pause menu.
Always show 'Play Again?' menu after losing the game.