Added glew.
Color now has alpha, this will be used in place of a _active flag for each voxel.
Added the concept of a chunk.
Rendering 100% density chunks without respecting the voxel colors. May not be respecting the upperLeftOffset either.
The rendering is done using immediate mode which will obviously need to change.
Merging from remote master.
Merge branch 'master' of https://github.com/codyjackson/voxel_engine

Conflicts:
	include/color.h
	include/window.h
	src/color.cpp
	src/main.cpp
	src/window.cpp
	voxel_engine.vcxproj
	voxel_engine.vcxproj.filters