Freeware SGF Editor: Real Soon Now™

It was non-trivial to prepare MoyoGo's sources for conditional compilation to a freeware SGF editor, but it will be worth it. People have started to create Audio Go lessons with Moyo Go Studio, and they have expressed the desire for a free SGF reader, so that anyone can play back those lessons.

I will announce the availability of the SGF Editor in re.games.go in less than 48 hours, heaven permitting.