Release 4.7.0 planning

[JelleZijlstra]

Since we have accumulated quite a few changes recently (https://github.com/python/typing_extensions/blob/bc9ce4f9a4e1f38f85fab58328e8dd86741dab45/CHANGELOG.md#unreleased), including a few regression fixes, I'd like to make a new feature release soon.

Notable features will include:

• typing_extensions now re-exports (nearly) all of typing
• get_protocol_members and is_protocol are added
• Lots of tweaks to Protocol, TypedDict, NamedTuple behavior

As discussed in #190, we'll start using a release candidate. Proposed timeline:

• Cut a release candidate this Monday (June 19)
• Assuming there are no issues, cut 4.7.0 final on June 26, one week later

[AlexWaygood]

I'd like to make sure a backport of python/cpython#105835 gets into the next release. Not all of the assertions in that PR pass on typing_extensions on Python 3.7. (I know why, there's an obvious bug in the typing_extensions version of Protocol.)

[AlexWaygood]

I'd like to make sure a backport of python/cpython#105835 gets into the next release. Not all of the assertions in that PR pass on typing_extensions on Python 3.7. (I know why, there's an obvious bug in the typing_extensions version of Protocol.)

Done in #242

[JelleZijlstra]

A bit delayed, but preparing the RC in #248 now.

[JelleZijlstra]

4.7.0rc1 is out now. I also posted to typing-sig and created a GitHub release for visibility.

[JelleZijlstra]

This should probably be the last feature release to support Python 3.7 (i.e., 4.8.0 won't support 3.7). I can call that out in the release notes for 4.7.0 final, unless people think we should wait longer.

[JelleZijlstra]

Now starting the release process for 4.7.0

[JelleZijlstra]

Done: https://github.com/python/typing_extensions/releases/tag/4.7.0, https://pypi.org/project/typing-extensions/