blacklist started
added additional check
Working skip of unavailable tile coordinates
override hash and isEqual to check if tile in blacklist
Major cleanup and refactoring
Merge branch 'blacklist' into refactor

Conflicts:
	MapTileAnimation/MapTileAnimation/MATAnimatedTileOverlay.m
	MapTileAnimation/MapTileAnimation/MATAnimationTile.h
	MapTileAnimation/MapTileAnimation/MATAnimationTile.m