Changelog:
Re-enable analog thruster control (default is left stick up)
Lots of UI juice work, though I then broke some of it while trying to generalize it
Main menu animates open and close
Game over screen animates, then opens the leaderboard window
Gamepad B button bound to ui_escape and now exits all menu options
Leaderboard UI is janky, but works and fixes will probably happen tomorrow. This is because I'm using the Leaderboard as a test for generalizing the open and close animations across UI elements
Game now records at which stage a high score was reached, but this isn't yet displayed
Pausing during the game brings up the menu
It's now possible to change settings mid-game. If you get sick of the music, you can now rejoice. Or try increasing your multiplier, the music gets better when you do this.
New Game while already in a game works properly
Pausing only pauses the game, not the entire UI
