Added openGL extension header
Added const alternative to Volume::GetData()
Screenshots of heads...

currently my local repo is a bit ahead,
but it needs clearing up as it contains a lot of "hacks"
Normal mapping images
Added getter for Volume, clear memory when creating a volume
Use String for public interfaces
Added 3D texture object
Use String for public interfaces
Added getter for Volume, clear memory when creating a volume
GLEW as a sub-project for GL extensions glueing.
Some test data added
A lot of spike hacking
Misc discussion files