[issue28556] typing.py upgrades

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset 733193d050f317a7965faac6c3718e6e8316a8a0 by Miss Islington (bot) in branch '3.7':
bpo-28556: Update the opening note in typing docs (GH-16204)
https://github.com/python/cpython/commit/733193d050f317a7965faac6c3718e6e8316a8a0


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<https://bugs.python.org/issue28556>
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