1- What's considered an "old" node or commit? Technically, anything other than the head revision is old but can we remove them right away or do we need to retain a number of revisions? If the latter, then how far back do we need to retain?
we discussed this a while back, no good solution back then[1] [1] http://markmail.org/thread/tkrmjdrykrdgzooa#query:+page:1+mid:52ybqr24evhhu6ob+state:results
