MATH: Changed math::matrix_set_identity to take pointer instead of reference, OGL: style fix
UMVE: Support for deleting vertex normals of meshes
MVE: PLY reader fix for models with polygonal faces with >4 vertices
Apps: Updated scene2pset to optionally output sample scale
MATH: Added math::matrix_rotation_from_axis_angle function
MVE: Updated volume to int dimensions, updated accessor to provide color info
MVE: Updated marching cubes documentation