Update to QUDT v2.1.4

[gnmerritt]

Hi - thanks for the great QUDT bindings!

We're using them with a newer version of the QUDT ontology, and so here's a PR with our changes. There are currently a number of disabled unit tests for units that are defined outside QUDT (micromolar, etc) that I unfortunately don't have the hours to put against fixing up. That said, I think this branch is a good starting point for the ontology version upgrade so I wanted to at least start a discussion about potentially merging it.

Note: this PR also updates frozendict to make it safe for Python 3.9+ -an old import pattern is deprecated and being discontinued so I believe the package as-is will be broken.

[eigendude]

@gnmerritt Sorry I missed this last year. I'm surprised someone found the library! If you built anything from it I'd love to see.

[eigendude]

@gnmerritt I added CI, which includes isort and black, so there will be some git conflicts. These can be dealt with by attempting a rebase, and when the conflict occurs, check out the original commit in this branch via git checkout <hash> -- quidt test, then run black and isort, then add, commit and continue the rebase. The effect is exactly this code here but applied on the stylized codebase.

[eigendude]

Small request, can you keep lists in alphabetical order?

[eigendude]

I noticed a list that could be alphabetized. But aside from that everything here looks good. @gnmerritt are you willing to rebase?

[gnmerritt]

Yeah I'll be able to get to it after the holidays

[eigendude]

@gnmerritt I fixed the rebase conflicts on my end so there's nothing blocking this PR. What's its current state?

[gnmerritt]

ahh sorry, didn't realize I had the PR up from my main branch. you're welcome to merge my changes if you want, but I don't have any work time in the near future to help with that effort unfortunately

[eigendude]

OK, no worries! Do you want to close this to avoid the noise here? Feel free to re-open if life brings you bountiful time.