Issues:
	Bug when adding cubes from a chunk to the border of another one.
	Chunks in diagonal will not be tested for cube selection.
	Grass on all dirt cubes

Cubes:
	0: Nothing
	1: Stone
	2: Dirt
	3: Dirt with grass
	4: Grass

Faces:
	0: FL
	1: FR
	2: BL
	3: BR
	4: Bottom
	5: Top