Multiple hitboxes and fixed knockdown
Merge remote-tracking branch 'origin/master'

Conflicts:
	UltraBrawl/UltraBrawl/Characters/Goku.cs
	UltraBrawl/UltraBrawl/Characters/Megaman.cs
	UltraBrawl/UltraBrawl/PlayerCharacter.cs
	UltraBrawl/UltraBrawl/SpriteManager.cs