For those of you who have been following the development of reposurgeon, a pre-announcement: the next version, probably to be numbered 2.0, will directly read Subversion dumpfiles and repositories.
I’ve got this feature working now – it’s why my blogging has been scant recently – but I intend to have a really good regression-test suite in place and at least one large repo conversion done before I ship it for general use.
Note an important limitation: it will not write Subversion repos. So it will be useful as a conversion tool but not directly as an editor.