The volume calculations use a cross and a dot product instead of determinant.
Cleaned up the utility functions for calculating angles.
Cleaned up the utility functions for calculating barycenters and barycentric coords.
Updated the normal_direction and project utility functions.
Updated the quality utility function and deleted unused utility functions.
Updated utility intersection functions.
Deleted unused function. The util.h file is now cleaned.
Cleaned CGLA_API.h