Subversion conversion?

Quite sometime ago someone proposed a switch to Subversion.  I expressed
some concerns as the PSF was going through the switch at the time and the
verdict wasn't quite in as far as I was concerned.  I've since then gained
enough experience with Subversion to no longer be such a Luddite.  Should we
switch now?  After the next alpha release?  After the next beta release?
Never?

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