Hello from PyCascades! Straight from the Pacific North-West, a new Twisted release candidate! In this release, there is: - twisted.web.client.HostnameCachingHTTPSPolicy was added as a new contextFactory option. This reduces the performance overhead for making many TLS connections to the same host. - twisted.conch.ssh.keys can now read private keys in the new "openssh-key-v1" format, introduced in OpenSSH 6.5 and made the default in OpenSSH 7.8. - The sample code in the "Twisted Web In 60 Seconds" tutorial runs on Python 3. - DeferredLock and DeferredSemaphore can be used as asynchronous context managers on Python 3.5+. - twisted.internet.ssl.CertificateOptions now uses 32 random bytes instead of an MD5 hash for the ssl session identifier context. - twisted.python.failure.Failure.getTracebackObject now returns traceback objects whose frames can be passed into traceback.print_stack for better debugging of where the exception came from. - Much more! 20+ tickets closed overall. You can get the tarball and the NEWS file at https://twistedmatrix.com/Releases/rc/19.2.0rc1/ , or you can try it out from PyPI: python -m pip install Twisted==19.2.0rc1 Please test it, and let me know how your applications fare, good or bad! If nothing comes up, 19.2 will release in a week. Twisted regards, Amber Brown (hawkowl)