get_url_params_except() now returns arguments in sorted order, rather

than dictionary iteration order, helping to keep URLs consistent to

benefit the most from caching.
In the process, this has gained type hints. It also no longer manually

handles encoding of strings, since this was a holdover from Python 2.7

days and modern urlencode() smartly encodes as needed for us.

Unit tests passed.
Tested this as part of a change using this function and verified the

sorted output.