I've added the design overview document for the next version of cyclone.

After a long time away from this project, I'm back at it, and have added some mailing lists for discussion.

Updated some of the graphics. Added alternate firing keys.

Ok, all the changes in the last version were not good. The radar mirror image is fixed now. Other changes too.

Vast speed improvement under linux. Added a key to take a screenshot (S). Fixed a few minor bugs. I'm still tuning the game difficulty.