Switch to setuptools_scm instead of versioneer

[omad]

Versioneer is old, unsupported, and produces bogus
version numbers which can lead to unstable versions
being accidentally installed.

Reason for this pull request

See #871

• Closes Incorrect versioning of development packages #871
• Fully documented, including docs/about/whats_new.rst for all changes

[codecov]

Codecov Report

Merging #877 into develop will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #877      +/-   ##
===========================================
- Coverage    89.93%   89.92%   -0.01%     
===========================================
  Files           95       94       -1     
  Lines         9386     9383       -3     
===========================================
- Hits          8441     8438       -3     
  Misses         945      945              

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[Kirill888]

🏆

[snowman2]

We ran into this issue today: pypa/pip#7778

I am wondering if it is possible to use a pyproject.toml instead of defining setup_requires for this?

[omad]

That should be possible @snowman2 , I'll open a new PR soon with the change.