This is great! You hit the need for configless docsites that many Pythonistas who are in data science and research have: we write a lot of experimental and prototype code. Docstring documentation in itself feels like a considerable investment in these contexts so anything that helps publication without any hassle is more than welcome.

Are you planning to support Restructured Text next to Markdown? I find ResT is used more often (in the machine learning ecosystem at least).