Requires python-sfml

Taxi-metric (aka, Manhattan) voronoi diagram geometry generator, with animated demo (run test.py)

keys: escape: exit space: pause tab: reverse up/down: speed

toggle drawing of:
c:       centroids
n:       centroids-centroid 'neighbor' linkage
p:       centroid polies

Working on another version - an optomization I tried on this isn't working.