Add initial demo
Adjust demo
Add rotation and scale demo
Refactor scale to sprite property
Begin adding masked lights
Add LoadMaskedLight function
Progress on MaskedLight behavior
Add progress on masked lights
Add functional masked lights
Reorganize SpriteLight proj
Refactor NormalMapIntensity to property of light
Fix rotation around center
Add DemoGame.cs, abstract Game.cs
Merge branch 'dev' of https://github.com/conorpetersen/SpriteLight into dev
Merge commit '8fa519d' into working
Complete demo
Merge branch 'working' into dev