File Camera.h: Implement transformations.
Class geo::Plane: Implement new ways to instanciate a plane, ie specifying three points, or one point and a normal.
Class geo::Sphere: Implement colour on the sphere.
Class Light: Implement Kd, Ka and Ks on the sphere
Class Parser: Try to move all this to a .cpp file which I cannot manage to do... it says "multiple definitions"...
File Parser.h: I cannot move the definitions to a source file! It complains about multiple declarations...
Member Renderer::raycast (ngl::Vec3 _from, int _avoid): Work harder on this, shadows should layer up, not just be absolute true or false.