Skeleton MessageRelay
Rectangle class.
WIP Frame
MessageRelay renamed to EventRelay
Working event system!
Started implementation of events for InputSystem and SoundSystem
Encapsulated Renderer WIDTH and HEIGHT variables.
WIP Frame
Rectangle comparison fixed
Input events moved from InputSystem to new InputManager
Basic input binding and command publishing system
WIP InputController for easier command handling in systems
FreeSteeringSystem converted to take input commands
Merge remote-tracking branch 'origin/master' into gui

Conflicts:
	src/GameWorld.cpp
	src/Systems/FreeSteeringSystem.cpp
	src/Systems/PhysicsSystem.cpp
	vs11/Returngeance/Returngeance.vcxproj.filters
Merge branch 'master' into gui
WIP Render Queue
Merge branch 'master' into gui