[Catalog-sig] Stable-releases-only PyPi

["Martin v. Löwis"]

> Or add a new stable index on PyPI (ex: http://python.org/pypi/stable).
> Easy to create, easy to maintain, easy to use and don't break
> anything.

If people can agree on a specification as to what packages this should
include exactly, I can happily provide it. I won't lead a project to
get people agree, though.

If you go by trove classifiers, my proposal would be to include all
releases with a classifier "Development Status :: 5 - Production/Stable"
or "Development Status :: 6 - Mature".

Regards,
Martin