Support Python 3.10 type unions #75
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I thought these already worked, but they didn't. Type unions using the `int | None` syntax create a `types.UnionType` object, not a `typing.Union` object. Unfortunately `types.UnionType` doesn't define `__origin__` (like all other generic types do), so this wasn't being properly handled by the previous logic. This PR fixes this and adds a test for Python 3.10+.
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I thought these already worked, but they didn't. Type unions using the
int | Nonesyntax create atypes.UnionTypeobject, not atyping.Unionobject. Unfortunatelytypes.UnionTypedoesn't define__origin__(like all other generic types do), so this wasn't beingproperly handled by the previous logic. This PR fixes this and adds a
test for Python 3.10+.