support python package auto-publishing

[chfw]

https://github.com/moremoban/gitfs2/commit/a0dea03a079c7a4980dbfd952ff8d88ff1052611/checks?check_suite_id=353889237

First ever github action to publish succeeded. I have tried Azure and Travis-ci and failed. I am rolling this out to all my github repos and yours if you like and have them on github. :)

[chfw]

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remember to set up these two secrets:

PYPI_PASSWORD PYPI_USERNAME

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another success story:

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With custom git command, auto python saves another hassle.

      - uses: actions/checkout@v1
      - uses: srt32/git-actions@v0.0.3
        with:
          args: git submodule update --init --recursive
      - name: Set up Python

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next one joining the party:

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this will save me tons of seconds!! and produce cleanest build!!

[chfw]

httpfs