Implement Minkowski Sums

[Shkyrockett]

Pathfinding and physics will need Minkowski sums, or some form of offsetting.

[Shkyrockett]

Potential resources:
https://www.gamedev.net/resources/_/technical/game-programming/swept-aabb-collision-detection-and-response-r3084
http://in2gpu.com/2014/05/12/gjk-algorithm-collision-detection-2d-in-c/
http://angusj.com/delphi/clipper.php