P2: Add multiplayer session
GameConfig: Fix css assets
add game config
Hide barlines when they should be hidden
SongSelect: Selectable text, assets cleanup, and bug fixes
View: Rewrite
Generate previews for songs
Add debugging user interface
SongSelect: Add About screen
SongSelect: Add ura difficulty
CanvasAsset: Change animation speed with bpm changes
ParseTja: Fix sub-measure bpm changes
Add .tja file support