Announcing Tornado 6.5b1

[Ben Darnell]

The first beta release of the next version of Tornado is now available on pypi and can be installed with `pip install tornado==6.5b1`.

This release includes a number of changes to harden the HTTP implementation and more closely conform to the RFCs. This improves compatibility with certain proxies but has some potential to cause problems so additional testing is appreciated.

Note that this is not a release candidate; I intend to make a few additional changes after Python 3.14b1 is released next week; I anticipate releasing Tornado 6.5 in mid-May.

Release notes are available at https://www.tornadoweb.org/en/latest/releases/v6.5.0.html

-Ben