Added P-g caching and optimal path caching.
Added P-g caching and optimal path caching.

thaynewalker/hog2,Sprunth/hog2,thaynewalker/hog2,thaynewalker/hog2,Sprunth/hog2,thaynewalker/hog2,thaynewalker/hog2,nathansttt/hog2,nathansttt/hog2,nathansttt/hog2,Sprunth/hog2