[Distutils] Requesting PyPI classifiers for Sphinx

[Donaldo Fastoso]

Somewhat OT,

but i was wondering if there is documentation helping to choose
the right classifiers if the choice is not obvious.

For example i find the "Development Status" classifiers somewhat
"quirky": 3 classifiers for alpha-releases:

	Development Status :: 1 - Planning
	Development Status :: 2 - Pre-Alpha
	Development Status :: 3 - Alpha

but no "release candidate"

	Development Status :: 4 - Beta
	Development Status :: 5 - Production/Stable

and similar to the alphas a somewhat murky distinction between the
stables:

	Development Status :: 5 - Production/Stable
	Development Status :: 6 - Mature

What is the rationale behind this and where can i inform myself about
it?

And on a second thought: is there a way to deprecate classifiers if
they get obsolete?