Announcing Tornado 6.4

[Ben Darnell]

I am pleased to announce the release of Tornado 6.4. This release brings improved compatibility with Python 3.12, a fix for the "Task was destroyed but it is pending" GC issue, and a bunch of smaller changes including some very old PRs and community issues in some modules that haven't gotten much attention recently.

Full release notes are at

  https://www.tornadoweb.org/en/stable/releases/v6.4.0.html

Install the new release with

  pip install tornado==6.4.0

-Ben