Update function signatures in core.Universe

[lilyminium]

Fixes #2921

Changes made in this Pull Request:

• update function arguments to named arguments instead of *args, **kwargs

PR Checklist

• Tests?
• Docs?
• CHANGELOG updated?
• Issue raised/referenced?

[pep8speaks]

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

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2020-08-27 17:29:46 UTC

[codecov]

Codecov Report

Merging #2923 into develop will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #2923      +/-   ##
===========================================
+ Coverage    92.96%   93.04%   +0.07%     
===========================================
  Files          187      187              
  Lines        24935    24995      +60     
  Branches      3258     3292      +34     
===========================================
+ Hits         23182    23256      +74     
+ Misses        1705     1691      -14     
  Partials        48       48              

Impacted Files	Coverage Δ
package/MDAnalysis/core/universe.py	97.79% <100.00%> (+0.34%)	⬆️
util.py	89.47% <0.00%> (+0.01%)	⬆️
package/MDAnalysis/coordinates/base.py	95.12% <0.00%> (+0.48%)	⬆️
coordinates/base.py	95.12% <0.00%> (+0.49%)	⬆️
package/MDAnalysis/analysis/leaflet.py	99.15% <0.00%> (+2.81%)	⬆️
package/MDAnalysis/due.py	75.00% <0.00%> (+8.33%)	⬆️

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[orbeckst]

So much cleaner! Thanks.