Polytope for computing polygon intersections

The main difference between this release and v0.1 is that the intersections of shapes beyond circles is calculated using the polytope library. This library was compared with other computational geometry libraries and was found to be faster because it uses linear systems of equations instead of symbolic computation.

Also, this version laid the groundwork for N-dimensional compatibility. Mainly, Points are specified with a list of coordinates instead of each coordinate as its own comma separated entry.