scipy.integrate.simps deprecation

[IAlibay]

Context

2023-11-03T03:16:21.1314426Z /home/runner/work/mdanalysis/mdanalysis/package/MDAnalysis/analysis/pca.py:750: DeprecationWarning: 'scipy.integrate.simps' is deprecated in favour of 'scipy.integrate.simpson' and will be removed in SciPy 1.14.0

In this PR

Switch to scipy.integrate.simpson - note that the even keyword now defaults to Simpson's rule compared to avg in scipy.integrate.simps.

As the even keyword is deprecated and soon to be removed, I think the aim would be to just use this new behaviour going forward.

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Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4b8b924) 93.37% compared to head (e1e10e7) 93.37%.

Additional details and impacted files

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  Coverage    93.37%   93.37%             
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Files	Coverage Δ
package/MDAnalysis/analysis/pca.py	99.49% <100.00%> (ø)

... and 14 files with indirect coverage changes

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[tylerjereddy]

LGTM

The deprecation happened because the original short name could be used/interpreted as a slur, and then we wanted to avoid maintaining two interfaces to the same thing. I agree with your interpretation, the even keyword is going away but the new default should almost always be better anyway.