Initial commit.
Refined Nu design.
Added extensibility to the world.
Added missing files...
Removed incorrect OpenTK dependency.
Added SDL2# dependency.
Attempting to get SDL2 to work.
Trivial changes.
Got SDL2 working.
Handling Sdl events.
Integrated World and Sdl.
Some code reorganization.
Continued work on game structure.
Worked out programming model for game state synchronization.
Work on getting test game up.
Got gui button rendering (sort of).
Trivial changes.
Added app exit handling.
Started working on button click event.
Got gui button clicking!
Displaced world lens concept.