Map: unified floodfill algorithm.
Generic pathfinding algorithm.
Turned whole LeeAlgorithm class into one function.
Replaced pathfinding in Level with new generic one.
Refactored Lee pathfinder. Made members for path itself and for directions to follow.
Replaced find_at functions with std::find_if and lambdas. C++0x is neat!
Manual for Files. Fixed docs for utils.