Added to chicago validation implementation code - now has nice plotting script to demonstrate the issues underlying the choice of centroids/cample points.
Refactors involving renaming the Roc class... how exciting.  All auto-renamed by PyCharm.
Added support for passing an array of polygons into the Roc class rather than a single side_length parameter - this is in prep for running Monsuru's validation work.  TODO: test this feature.
Added implementation script that runs SEPP on CAD and validates for Monsuru's paper