tzwin module not building on readthedocs

[pganssle]

I believe the issue is that readthedocs is building the documentation on Linux or something like that.

I'm fairly certain I do not want all the docs built on Windows, but if all the other modules are the same I guess it's not a big deal.

[pganssle]

One option might be using sphinx-autoapi instead of sphinx-autodocs.

[pganssle]

Per @mariocj89's idea, another way to solve this might be to just mock out all the Windows-specific modules in conf.py.