Replace setup.py by pyproject.toml

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (0e69cff) 90.14% compared to head (f976c12) 90.20%. Report is 2 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #450 +/- ## ========================================== + Coverage 90.14% 90.20% +0.06% ========================================== Files 6 6 Lines 284 286 +2 Branches 51 51 ========================================== + Hits 256 258 +2 Misses 12 12 Partials 16 16 ```

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[claudep]

Does anyone know how to not include __pycache__ directories when building with python -m build? It's a current blocker for this patch.

[merwok]

That’s probably up to the build backend

[claudep]

I checked other packages using the simple build backend, but their packages don't include __pycache__ dirs, so...

[merwok]

What is «the simple build backend»? You are using setuptools, which is popular but complicated. flit-core is a simple build backend, hatchling too I think. (pypa/build is a build frontend, it does not control the wheel build itself)

[claudep]

I think this is now ready. @Natim, is this OK for you?