Add accessors for drawable width/height and vertices
Switch to use of Vector objects for position/size etc
Add initial test shadow draw, given a list of vertices
Add Vector2 functionality to take on a given value immediately
Add a toString to Vector2 that automatically formats it as a coordinate
Add a utility overload of setPosition and correct getVertices order to be correctly counterclockwise
Add initial (bugged) test shadow geometry generation
Remove debugging messages now that it works (mostly)
Refactored and cleaned up code for working lights