Almost a dual, no more crashes

Duals seem to be missing many faces. Otherwise, looks to be mostly
correctly done. Also wrote a function to check for nearby PVectors to
account for float inaccuracy
Merge branch 'master' of https://github.com/savirimon/CS3451-P5-TriangleMeshes

Conflicts:
	meshes.zip
	meshes/Polyhedron.pde
	meshes/meshes.pde