[fmt] Selections

[RMeli]

Easy one, already good to go.

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📚 Documentation preview 📚: https://mdanalysis--4861.org.readthedocs.build/en/4861/

[pep8speaks]

Hello @RMeli! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file package/MDAnalysis/selections/base.py:

Line 132:12: E713 test for membership should be 'not in'
Line 211:41: E203 whitespace before ':'

[codecov]

Codecov Report

Attention: Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 93.63%. Comparing base (9110a6e) to head (1ee857e).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
package/MDAnalysis/selections/base.py	85.71%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4861      +/-   ##
===========================================
- Coverage    93.65%   93.63%   -0.03%     
===========================================
  Files          177      189      +12     
  Lines        21779    22845    +1066     
  Branches      3064     3064              
===========================================
+ Hits         20398    21391     +993     
- Misses         929     1002      +73     
  Partials       452      452              

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[orbeckst]

blanket LGTM — please merge when you're happy with it @RMeli

🎄 🎁