set status to mature

[orbeckst]

Our classifiers should indicate that we're out of beta (after > 12 years?).

mdanalysis/package/setup.py

Line 534 in 788f294

'Development Status :: 4 - Beta',

Should be changed for

• 1.x
• 2.x

[IAlibay]

Somehow the autoclose keywords on the two PRs didn't work, closing now.

[orbeckst]

Apparently, it only works for merges into develop.