Added lots of new options to RadialInitializer.
Added some experimental junk, hidden under the 'gear' icon: "Polygon value > Evaluate" and "Polygon value > Redistribute least valuable shapes". To estimate the "value", the divergence of the best-match is evaluated with polygons omitted. Polygon is considered "valuable" if omitting it worsens the match. "Redistributing" finds the lowest-value polygons, removes them, and uses the freed-up shapes to subdivide the most-valuable polygons. In practice this doesn't work that well.