Significantly improved docking - subjugated plates now look behind as far as needed to find the nearest empty space on subjugating plate. Subjugated land now largely docks to the correct side of the subjugating plate without (largely) loosing land, and there is no longer need for getContinent or getNeighbors.
Merge branch 'master' into gh-pages

* master:
  Significantly improved docking - subjugated plates now look behind as far as needed to find the nearest empty space on subjugating plate. Subjugated land now largely docks to the correct side of the subjugating plate without (largely) loosing land, and there is no longer need for getContinent or getNeighbors.