* Core: fix settings API for removal of Python 3.8, 3.9 This is fixing 2 problems: - The `World` class has the annotation: `settings: ClassVar[Optional["Group"]]` so `MyWorld.settings` should not raise an exception like it does for some worlds. With the `Optional` there, it looks like it should return `None` for the worlds that don't use it. So that's what I changed it to. - `Group.update` had some code that required `typing.Union` instead of the Python 3.10 `|` for unions. added unit test for this fix added change in Zillion that I used to discover this problem and used it to test the test * fix copy-pasted stuff * tuple instead of set Co-authored-by: black-sliver <59490463+black-sliver@users.noreply.github.com> --------- Co-authored-by: black-sliver <59490463+black-sliver@users.noreply.github.com>  | 
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| .. | ||
| benchmark | ||
| cpp | ||
| general | ||
| hosting | ||
| multiworld | ||
| netutils | ||
| options | ||
| programs | ||
| utils | ||
| webhost | ||
| worlds | ||
| TestBase.py | ||
| __init__.py | ||
| bases.py | ||