GameState object class refactor

[vsrz]

Do you have any issues with refactoring game state into its own class? I'd like to track game milestones here; anything that calls gamestatusp or like functions in defs.h.

The idea for this came when trying to design the object classes. I'd like to use it to keep track of the creation of unique objects rather than inside the object struct which wouldn't work in the current design.

Finally I'd need to figure out how to save this object to the safe file.

[cwc]

:+1: sounds great. Feel free to add any data to the save logic that's necessary - definitely not worried about backward compatibility at this point.