adding repytah package

[kmkinnaird]

Checklist

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[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/repytah) and found it was in an excellent condition.

[kmkinnaird]

I am the listed GitHub user listed in the maintainer section and willing to be listed

[kmkinnaird]

Referred to this issue to decide to add yum_requirements.txt

[kmkinnaird]

@conda-forge/help-python, ready for review!