Add standalone url field to fx2 setup.py
Huh. Why don't these links already show up in sidebar?

It could be some edge case with url metadata handling, twine also uses project_urls field and those show up fine. I will try to dig deeper to figure out whats going on.
So, I did some testing with testpypi and it looks like both, with and without the url field show all three project_urls links.
Also python3 setup.py check does complain about missing url meta-data
$ python3 setup.py check
running check
warning: Check: missing required meta-data: url
Package upload to testpypi was done with twine 2.0.0. I don't know it that has something to do with missing links.


Okay so the only thing I have to do here is to upload the package again with twine, right?
I think so yes.
I've uploaded with twine but there are still no project links anywhere.
The links are fixed now: https://pypi.org/project/fx2/