Add Thing class
Add skeleton to Actor class
Add update function (and skeletons of other functions) to Actor
Write Lorentz.transform, create relevant references
Merge branch 'develop' into feature-relativity
Fix add mistake; rename PertComponent to Main.
Merge branch 'develop' into feature-relativity
Implement Actor.updateVectors
Fix all the issues related to updating Actor and Thing
Clean up Actor.update().
Remove the shit file 'blah'
Add functionality to game.tick()
Change Actor() constructor coordinates to doubles.
Simplify graphics to rectangles to minimize required files
Added Weapon and Pickup, yo.
Fix formatting for Pickup and Weapon.
Add collide(Actor) to Thing
Remove Pickup; clearify confusion between Thing and Pickup.
Edited Thing.
Added constructor to Thing.