Today we decided to deactivate the transports for Telegram, Facebook and AIM. None of them saw any real world usage, so there is no use in keeping them up.
Update: Since the Debian now supplies packages via backports, we no longer update these packages.
In order to ease transition to Let's Encrypt, we have built up-to-date packages of their client and Apache authenticator for Debian 7.0 (Wheezy) and later as well as Ubuntu 14.04 and later. To install, simply do (replace "jessie" with your distribution codename):