Do `1.0a1.post2' instead of `1.0a1.2', to satisfy PEP 440.
Do `1.0a1.post2' instead of `1.0a1.2', to satisfy PEP 440.

PEP 440 rejects `1.0a1.2' -- specifically, the `.2' after `a1'.  But
it allows `.post2' after `a1', so we'll do that instead.

probcomp/bdbcontrib,probcomp/bdbcontrib