* Avoid placing polygon labels in holes
* Traverse vertices in hilbert order to find potential label points
* Update test to reflect new label placements
* Sorting by Y coordinate is better and easier than Hilbert order
* Give a bonus for being near the center of mass
* Make label points a little more border-shy
* Tall places, not just wide places; border lines, not just border points
* Clean up
* Try diagonals through the features too
* Limit the search for label points to prevent slowing down too much
* At this point the center of mass bonus is doing more harm than good
* Forgot to update test