Add 'WorldState', 'CTile' and 'SimpleBiomeMap' concepts, completing 'loadChunk' function.
Final newline.
changing the I.Wood ID and the Air symbol.
Adding MobData and tweaking some comments.
Creating Effect.hs with the Effect concept and pre-formatting 'onAction' function.
Revert "Adding MobData and tweaking some comments."

This reverts commit 53995b98c0556e2f7a78621902fca6679c40dbc9.
Making everything compile (Ops).