Slipgate Minute source now available

By request, the source of the mod is now up at https://github.com/strangebroadcasts/slipgate-minute.

It's based on QuakeC 1.06, which is unfortunately missing a GPL notice, so the licensing situation isn't 100% clear - please let me know if you spot any glaring omissions or GPL violations. (Rebuilding the mod on a proper GPL fork is on my ever-growing TODO list.)