Issue 2327 - Warn of upcoming scale_factor changes

[IAlibay]

Towards #2327

Changes made in this Pull Request:

• Adds FutureWarning & docstring related to the upcoming changes to the way in which we write scale_factor entries with the NCDFWriter.

PR Checklist

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

[codecov]

Codecov Report

Merging #3185 (9151cd3) into master (9a03aec) will increase coverage by 0.84%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3185      +/-   ##
==========================================
+ Coverage   90.96%   91.81%   +0.84%     
==========================================
  Files         162      167       +5     
  Lines       22192    22699     +507     
  Branches     3201     3201              
==========================================
+ Hits        20187    20840     +653     
- Misses       1382     1775     +393     
+ Partials      623       84     -539     

Impacted Files	Coverage Δ
package/MDAnalysis/coordinates/TRJ.py	97.17% <100.00%> (+2.61%)	⬆️
package/MDAnalysis/topology/tpr/obj.py	96.82% <0.00%> (-3.18%)	⬇️
...onality_reduction/DimensionalityReductionMethod.py	97.14% <0.00%> (-2.86%)	⬇️
package/MDAnalysis/tests/datafiles.py	31.25% <0.00%> (ø)
package/MDAnalysis/due.py	56.09% <0.00%> (ø)
package/MDAnalysis/analysis/legacy/x3dna.py	0.00% <0.00%> (ø)
package/MDAnalysis/tests/__init__.py	100.00% <0.00%> (ø)
package/MDAnalysis/analysis/legacy/__init__.py	0.00% <0.00%> (ø)
package/MDAnalysis/core/selection.py	99.52% <0.00%> (+<0.01%)	⬆️
...sis/analysis/encore/clustering/ClusteringMethod.py	96.96% <0.00%> (+0.04%)	⬆️
... and 86 more

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[lilyminium]

Looks good, thanks @IAlibay. Is there currently a PR open implementing these changes in 2.0?

Also please can you resolve the CHANGELOG conflict :)

[IAlibay]

Looks good, thanks @IAlibay. Is there currently a PR open implementing these changes in 2.0?

Also please can you resolve the CHANGELOG conflict :)

Looks good, thanks @IAlibay. Is there currently a PR open implementing these changes in 2.0?

Also please can you resolve the CHANGELOG conflict :)

Not yet, I'll deal with it post-1.1.0 release / dealing with our March deadlines 😉

[lilyminium]

I can't seem to squash-merge this on the app (merge seems to be the only option). If anyone else feels like doing it, please feel free!