Spenc

This is the first implementation to include the original Shi and Malik recursive bipartitioning algorithm. This works hierarchically, repeatedly splitting the graph starting from the highest-level partition discovered in the first round. This lets us solve max-P style problems, allowing the maximum number of viable clusters (above a given floor) to be discovered.

This describes the release of spatially-encouraged spectral clustering prepared for the 2018 GISRUK Conference.

This algorithm is ready to use, troubleshot, and fully-documented.