Add a Vec2::rotated_by method with tests
Implement some Vec2 methods with tests
Implement Frustum::contains_point
Add some pass throughs to the CameraProxy, and a new move_to overload on the Sprite class
Merge branch 'master' of github.com:Kazade/KGLT into sdl2
Drop sigc++ in favour of built in signals in kazbase
Tweaks to the signal handling and box drop sample. Update kazbase to gain signal fixes
Merge branch 'master' into sdl2
Tear apart the keyboard input and start rebuilding in SDL2 style