GUI updates for user score
Removed deprecated functionality from the ObjectTrack
Added relative positioning to the deck obstacle
Fixed projectile shadow animations for impact
Fixed a bug in the gameplay manager
Merge branch 'production' into development
Added Off-ScreenCollision

Created prefab + imported sound
Initial implementation of GUI (re-using touch handler/management code for projectiles)
Added ButtonSlick UI Sound

Created pre-fab + attached audio asset
Added MenuMusic

Created prefab + attached audio asset
Merge branch 'gui' into development
Merge branch 'art' into development

Conflicts:
	Assets/Prefabs/Entity Prefabs/AltAnimatingProjectile.prefab