Core: purge py3.8 and py3.9

[Berserker66]

What is this fixing or adding?

Fixes py 3.8 and py 3.9 by yeeting them.
Fixes Windows 7 support, by no longer supporting it.

I touched HK because I wrote that code, I saw stardew has 3.8 stuff too, didn't touch that. There's a couple more 3.8 marked todos, I left some of them alone as they either go beyond deprecation (redesign/changes) or had a question mark. Once we know what to do with those, I suppose those changes could target this branch and we can accumulate it.

How was this tested?

A bit of generate and webhost, but it's probably too early to broadly test at this time.
I also don't currently know why this fails:

[silasary]

Exciting

[agilbert1412]

Could you elaborate on what Stardew does / needs to do?

[Exempt-Medic]

Could you elaborate on what Stardew does / needs to do?

There's at least

Archipelago/worlds/stardew_valley/requirements.txt

Line 1 in ba8f035

importlib_resources; python_version <= '3.8'

Archipelago/worlds/stardew_valley/requirements.txt

Line 2 in ba8f035

graphlib_backport; python_version <= '3.8'

Also maybe these:

Archipelago/worlds/stardew_valley/test/stability/TestStability.py

Line 15 in ba8f035

# Python 3.10.2\r\n

Archipelago/worlds/stardew_valley/data/game_item.py

Line 43 in ba8f035

# FIXME this should just be an optional field, but kw_only requires python 3.10...

[Berserker66]

I don't currently intend to do anything about this, if github is still using an old version by the time this is ready for merge, we can adjust it then.

[agilbert1412]

@Jouramie Just pinging you to keep you in the loop, you're generally much more aware than me of how these things work

[Jouramie]

Yeah there are a couple of things to clean up in stardew, nothing big.