Some refactoring and bug fixing (introduced debugging print function).

Added single-player mode, enabled saving/loading of a game. ...

Also related code cleanup.

First commit on the single-player branch. ...

Networking is proving to be a major challenge, so I'm bypassing it for now...
Refactored the start menu.

Continued working on networking capabilities. ...

Currently at an impasse, though...

A lot of refactoring and code cleanup... ...

Still to be done: remove all those (eval) expressions.

Some refactoring in world/game-object, expanded commandline parameter parsing.

Finished the 'goto', 'place' and 'help' commands. ...

I noticed that the code is starting to look quite crufty - time
for a clean up, I think...

Finally got create-player working.

Wrote create-player (though still buggy)

Saved a lot of code by writing build-symbol, started on client module.

Enabled recursive loading of ATL files, implemented option command behaviour. ...

The latter caused many headaches, and great joy in its completion :D

Integrated interpreter.lisp with atlantis.lisp, various bug fixes.

Started work on the interpreter. ...

More code added to util.lisp, changed ATL syntax to suit Lisp better.

More work on util.lisp, changed license to MIT.