[MRG] use pyproject.toml and setup.cfg instead of setup.py

[ctb]

Many minor changes and configuration updates to bring the project up to date.

• create a pyproject.toml
• switch away from setup.py to using setup.cfg

• Is it mergeable?
• make test Did it pass the tests?
• make clean diff-cover If it introduces new functionality, is it tested?
• make format diff_pylint_report doc Is it well formatted?
• For substantial changes or changes to the command-line interface, is it
  documented in CHANGELOG.md? See keepachangelog
  for more details.
• Was a spellchecker run on the source code and documentation after
  changes were made?

[ctb]

@luizirber if you have a chance to look at this, I'm curious as to why python setup.py dist doesn't recognize the version from setuptools_scm. python -m build seems to, though.

[ctb]

figured it out! I needed

[options]
setup_requires =
  setuptools_scm

added in f5f1a52

[ctb]

I think the only things left are -

• try out the pypi upload on the testing site
• check manifest/file inclusion, and/or examine old files to make sure I transferred info over correctly

[ctb]

I think this is ready for review @luizirber - I'm new to these files, so advice/suggestions requested!!

[ctb]

all fixed, all tests pass!

[luizirber]

The tests are indeed passing, but... CI is not testing anything 🤣

I think it was missing the tox-gh-actions configs in tox.ini, let's see

[codecov]

Codecov Report

Merging #83 (1e24347) into latest (2303f66) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           latest      #83   +/-   ##
=======================================
  Coverage   87.51%   87.51%           
=======================================
  Files          15       15           
  Lines         633      633           
=======================================
  Hits          554      554           
  Misses         79       79           

Impacted Files	Coverage Δ
screed/__init__.py	100.00% <ø> (ø)

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[luizirber]

Some tox fixes would be nice too, but now it's failing because of pep8 🙃

[ctb]

The tests are indeed passing, but... CI is not testing anything 🤣

oops :)

[ctb]

ok @luizirber how does this look?

[luizirber]

Looking good! There is a curious warning showing up, but not a merge blocker

[ctb]

is this the warning, @luizirber?

DeprecationWarning: Creating a LegacyVersion has been deprecated and will be removed in the next major release,

if so, see: pypa/pip#9250 and links therein. It's a pip thing.