setup.cfgにDescription-Content-Typeが指定できるようになった
PEP 566 -- Metadata for Python Software Packages 2.1
Dustinさん!が提案
対応
https://setuptools.pypa.io/en/latest/history.html#v36-4-0
Add new Description-Content-Type metadata field.
Spec:
https://packaging.python.org/en/latest/specifications/core-metadata/#description-content-type