Setupmeta

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* Don't warn when bumping for the first time (with no git tags yet)

* Use the most common ``setuptools.find_packages()`` call (without arguments)

* Moved repo to https://github.com/codrsquad

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* Respect ``requirements.in`` when present

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* Explicitly state ``python_requires`` in ``setup.py`` to satisfy conda-forge linter

* Bundled tests in sdist, to allow for users wanting to rerun the tests to be able to do so from sdist

* Using https://pypi.org/project/check-manifest/

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* Removed commands ``twine`` and ``uber_egg``, turns out they're not useful

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* Corrected egg publication for python 2.7

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* Publish egg for python 3.9, not publishing for 3.5 any more

* Corrected support for inlined versions (``__version__ = "..."`` in user's code)

* Stop using deprecated ``imp`` module with python3

* Moved to github actions