adding uniqueEdgeID counter, adding getEdges(), adding subdivideFaceEdges(), removing removeUnusedVertices() by fixing bugs when removing faces/edges, fixed bug in removeFace() which would still use method in TriangleMesh parent class only
adding uniqueEdgeID counter, adding getEdges(), adding subdivideFaceEdges(), removing removeUnusedVertices() by fixing bugs when removing faces/edges, fixed bug in removeFace() which would still use method in TriangleMesh parent class only

--HG--
branch : wemesh

rekii/toxiclibs,postspectacular/toxiclibs,ruby-processing/toxiclibs,rekii/toxiclibs,postspectacular/toxiclibs