[eidorb]

Yibico's python-fido2 library (https://github.com/Yubico/python-fido2) contains (a minimal) CBOR implementation too: https://developers.yubico.com/python-fido2/API_Documentation...

I found it wouldn't encode `None`s, but didn't dig at all, just worked around it.

Star count would place it about midway in the list.