I noticed while examining the class comment for ChangeSet that there are
some instance variables leftover which seem to be related to the deprecated
project isolation functionality. A bit more poking exposed some methods
which seem to be leftover as well.

I'm thinking about seeing if I can rip some of this stuff out without
breaking anything, unless there's a good reason why I shouldn't. Anyone
still using this stuff since 4.1?

-- 
Casey Ransberger
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