Separate game logic from user-facing portion of the program

[rdanbrook]

The game engine should be completely separate from the user interface layer, and able to be compiled as a standalone module, accessible using a simple internal API. This will allow anyone to write a very simple interface for whatever platform they like, without having to depend on any external libraries like libxml2 or SDL. Those dependencies need to be eliminated from the internal game engine before this can be done.

[clort81]

Agree!