Removed TODO, fixed Vertex#selfPoints() stack overflow bug, better #toString()
Removed TODO, fixed Vertex#selfPoints() stack overflow bug, better #toString()

#toString() now uses StringBuilder and simply adds each vertex
onto its own line in the string
Vertex#selfPoints() produced a stack overflow bug when looking for itself, so instead I made a for-each loop searching for the exact instance of the current vertex

fishnal/pv-library-java