* Fix VM Global Addressing
* Modify VM structures to simplify storage
* Add explicit GameWorld::createPlayer() method
* Move gameTime to GameState for storage
* Add SaveGame class for reading + writing
* New Dependancy: cereal
rwengine
+ Make renderWorld() take a ViewCamera parameter.
+ add rotation and getView to ViewCamera
+ correct directions for vehicle and character movement.
rwgame
+ Remove GenericState
+ Add State::getCamera() to control the ViewCamera used for rendering
+ Clean up state camera control
+ Remove now unused view parameters from main
+ Add CutsceneData structures to store the data required.
+ Implement screen fading in and out (todo: splash screen fading)
+ Add GameData::openFile2() returns a handle to open file memory + size
+ Fix fog implementation
+ Add screenspace rect to GameRenderer for fades and cinematics
+ Fix thread-relative jumps
+ GameObject::setHeading(degrees) sets object rotation from a heading.
+ Add More GameState from opcodes.
+ Decouple game hours from the engine clock
+ Add VehicleObject::setRotation()
+ Add GameWorld::getGroundAtPosition(pos) for OpCodes
+ Fix Handling of fixed-point SCM parameters
+ Update IngameState to use GameState::player if it exists
+ Add skip-time button to skip opening cutscene (F12)
