Build and upload to PyPI

`pkg_resources` is deprecated #412

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Run time

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Job	Run time
Build source distribution	35s
Build wheels on ubuntu-20.04	9m 18s
Build wheels on macos-11	22m 12s
Build wheels on windows-2019	10m 14s
upload_testpypi	0s
upload_pypi	0s
	42m 19s