Phase I - Messaging System uses classes/events instead of a enum.
Remove this file, cause git does not like case sensitive
Rename Letters/ folder to Events/ since a Letter encapsulates an event
Merge remote-tracking branch 'origin/master' into backup

Conflicts:
	Classes/Communication/Dispatcher/LetterDispatcher.m
	Classes/Communication/Handlers/LogicLetterHandler.m
	Classes/Communication/Letter.m
	Classes/GameLogic/Battle/BattleCharacter.m
	Classes/GameLogic/Battle/EnemyBasicAttack.m
	Classes/GameLogic/Battle/Skills/CharacterSkill.m
	Classes/Layers/BattleLayer.m