simplify Python 3 classifiers

[stonebig]

No description provided.

[takluyver]

I've said this so many times I feel like a broken record, but I don't think we should use the specific Python 3.x classifiers, because it's presumed to work with new Python 3.x releases, and we'll only forget to update them. I'd rather just use the general 'Python 3' classifier.

[stonebig]

recent packages have the full list of Python 3.x classifiers, so you may define the rule for the whole Jupyter thing. and some packages may request the asyncio thing, 3.4+ only

[stonebig]

you are right that everything that is Python 3.3.+ only can be marked "Python 3" only, as Python3.2 is out of maintenance since February 2016:
https://www.python.org/dev/peps/pep-0392/#lifespan

[minrk]

👍 to 2.7, 3

[takluyver]

Thanks @stonebig