Bump typing_extensions version

[apadmarao]

I'm wondering if we can bump typing_extensions. I'm hoping to depend on the changes to TypedDict in #687 and #700

[ilevkivskyi]

Yeah, it has been a while since the last release. I am not sure when I will have time for this, maybe in April.

[apadmarao]

Thanks @ilevkivskyi ! I'd love to get this done quickly, and happy to contribute if it makes sense. Is this something that I could submit a PR for?

[ilevkivskyi]

Thanks, but unfortunately it is not something you can help with.

[gvanrossum]

could I help? I presumably have the pypi permissions.

[ilevkivskyi]

It would be great if you can release typing_extensions. The release process follows same steps as a typing release (don't forget to bump the version).

(I discovered that you weren't an owner of PyPI package so I just added you.)

[gvanrossum]

I've released typing 3.7.4.2 on PyPI: https://pypi.org/project/typing-extensions/#files

I'm going to assume everything's working. Nevertheless, whoever cares please test and report here!

I've also updated the supported versions to include Python 3.8 and 3.9.

[gvanrossum]

Note: I've not released a new typing package, only typing_extensions. AFAIK the two have unrelated release schedules. I've also not tagged this release. I presume the git tags refer to the typing package releases only.

[ilevkivskyi]

Thank you Guido! I checked that new release installs and the expected new feature (__required_keys__) works correctly.

[apadmarao]

Thank you Guido! Really appreciate it.