Fix shader errors about casting.
Linux fixes:

Remove explicit wglew (glew) *should* be fine.

New GLM:
Add GLM_FORCE_RADIANS to main.
Change Image import so it works with PIL
Use python path joining so this works X platform.
Case change fix (Projectile -> projectile)
Remove wglew, since we have glew
Merge branch 'master' of https://github.com/pabennett/glblox
Merge branch 'stuaxo-master'