- Major fix on spelling error on "polygon" which was "polygen". - Modify structure for files.
0.2.1
- Minor fix on Plane's normal vector, the normal vector is normalized at initialization.
0.2.0
- Add HalfLine geometry. - Modify `__repr__` for ConvexPolygon. - Add Sphere, Cylinder and Cone class method for ConvexPolyhedron. - Add Circle classmethod for Convexpolygon.