create turtle limbs for better base defense
fix wandering factory
search through all possible turtles for a build spot
make turtlehandler MostTurtled and LeastTurtled output sorted position lists
modify turtlehandler to create outposts and bases with exterior 'limbs' where ground and submerged defense are placed
remove debug plotting
Merge pull request #36 from zoggop/master

BA: improve base defense tower placement