Release regex

[flying-sheep]

@ilan-gold

we should probably relax this more to accept all of PEP 440:

anndata/docs/extensions/release_notes.py

Line 20 in d7643e9

FULL_VERSION_RE = re.compile(r"^(\d+)\.(\d+)\.(\d+)(?:(\.dev.*)|(rc.*))?$")

Maybe we can just use packaging.version.parse instead of a custom regex?

The reson this check is there is so the directive doesn’t try to include the fragment files. The fragment files are probably not legal PEP 440 versions, but we need to check