Gametools v0.11.0

Hi rust-lang -- I just published v0.11.0 of `gametools` (github) (crates), which is a library I've been gradually building to aggregate structures and algorithms I finding to be frequently useful in game and simulation programming. This release's high points: pathfinding module, implementing Dijkstra maps, standard A*, weighted A*, and dynamically weighted A* over a Grid<T> (see #3 below). The pathfinders accept arbitrary move sets, so you can calculate paths for things that move irregularl...