newRPL - build 1255 released! [updated to 1299]

[The Shadow]

I like the idea of groups rather than levels, though some of the groups will doubtless be equivalent to levels. I'm thinking of the oldRPL 'Rigorous' flag, which gets extra persnickety about absolute values.

I also like the idea of user-defined rules, though I hope they search upward the directory tree like usual. That way if there's a rule I want to always use, I can just put it in HOME.