Simplify diagram building by removing code for initial "not-colored" diagram. Now we color the diagram as we create it, using the non-Diagram position-to-color map
initial support to add binary search tree for hexagon positions. not used in program yet, and needs some refactoring (moving around). Also probably won't work.
implemented BinarySearch for hexagons
currently hangs :-(
so..implemented crude switching between BinarySearch and IntSet+ linear-search implementation
blend boundary color into fill color. remove opacity hack for fill color, set color sRGB values explicitly, tweak colors
Merge branch 'master' of github.com:misterbeebee/calisson-hs