use opacity to indicate thawing. not totally happy w/ effect, but argument was made to indicate some progress towards thaw. drop "exit" since it really wasn't helpful, and not rendering tags, was more annoying than fun.

At multiple requests, change ice to be turn based. This is a more modest adjustment of existing code, that can be fairly easily flagged or reverted if desired. It also allows scripts to extend freezing, and preserves fire melting.

escape return and be more friendly with translations

add link to GPLv2 notice in about page

uniform revision info in about page

add version info to frontend output too

version variables confom to naming convention