[issue26691] Update the typing module to match what's in github.com/python/typing

[Brett Cannon]

New submission from Brett Cannon:

The code in Lib/typing.py is outdated compared to what's at github.com/python/typing.

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assignee: gvanrossum
messages: 262879
nosy: brett.cannon, gvanrossum
priority: normal
severity: normal
status: open
title: Update the typing module to match what's in github.com/python/typing

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26691>
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