Added Normalize function to GamePoint.
Added helper functions to GameRect to get corners.
Cleaning up screen / game point functions.
Added “Angle” function to GamePoint.
Added Aniamtion::Value()
Added CoordinateSystem::ScaleAroundPoint, and fixed up other code.
Fixed compile errors. Static casting enums to ints. Look into a better way.
More scalar operations, and conversion from GameSize <-> GamePoint.
Filtered textures.
Working on support for sound slider.
[iOS] Fixed iOS project (added coordinate_types.cc)
Merge branch 'master' of github.com:sharkable/gameengine