Fixed dungeon rooms going off edge of map
Start player within a room
Dungeon walls block player movement, unless you hammer the movement keys
quickly.
Renamed 'cyberpunk' to 'neon'
Added preliminary entity system. Player is now handled by the Dungeon,
rather than PlayWorld.
Basic turn system implemented! You move, then everything else moves, one
at a time.
Will need to switch it so that only visible entities animate,
but that can wait until later.
Added animated sprites! :D
Entities now check if there is an entity in their target square before
moving