Added deallocation of states in the environment base class
Added a (untested) 3D planner
Merged master
Added dijkstra 3D planner
path hacks
Mainly added an A* planner
such cleanup, many changes
Merge branch 'ER-GraphSearch' of https://github.com/eratner/compgeo into RV-App
minor scene adjustments
some collision fixes
minor fix
Merge pull request #1 from eratner/RV-App

Rv app
bit of cleanup and added A* 3D planner
Added table-size-doubling to the hash table implementation
Merge remote-tracking branch 'origin/ER-GraphSearch' into ER-GraphSearch
Small issue with 2D planner
Merge pull request #13 from eratner/ER-GraphSearch

Hash table doubling and other things