[Twisted-Python] [SECURITY] Twisted 19.2.1 Release Announcement

[Glyph]

> On Jun 6, 2019, at 7:46 AM, Amber Brown <hawkowl at atleastfornow.net> wrote:
> 
> On behalf of Twisted Matrix Laboratories, I am honoured to announce the release of Twisted 19.2.1!

Thank you very much to Mark and Amber for their rapid-response work in getting this fix deployed, to Alex Brasetvik for discovering and reporting the issue via security at twistedmatrix.com, and Alex Gaynor for serving as our security contact and coordinator.  Go Team!

A reminder to anyone who has security issues to report, or who may want to work on security issues for Twisted in the future: on the front page here <https://twistedmatrix.com/trac/#Reportasecurityissue> we have a link to our reporting and remediation processes: <https://twistedmatrix.com/trac/wiki/Security>.

Thanks again all!

-glyph