Generate and publish API documentation

[hickford]

Great library! It was comprehensive docstrings, so it would be helpful to generate API documentation with Sphinx and publish on the Read the Docs. Published documentation is easier to browse, search and link.

https://www.sphinx-doc.org/en/master/
https://readthedocs.org/

Many many other Python projects use Sphinx and Read the Docs, eg. https://docs.python-requests.org/en/master/

[hickford]

The pull requests adds code to generate documentation. After merging, the next step is to make a free account at Read the Docs and point at the repo https://docs.readthedocs.io/en/stable/intro/import-guide.html

I see that https://github.com/LuminosoInsight/python-ftfy is already on Read the Docs https://ftfy.readthedocs.io/en/latest/

[hickford]

For temporary use: published docs from my personal fork https://langcodes-hickford.readthedocs.io/en/sphinx/source/langcodes.html