This library started life as a fork of Paramiko but has now been fully merged back upstream.
As such, 'ssh' is defunct and will receive no future releases or attention: please change your dependencies back to Paramiko, and file any feature requests or bugfixes over on Paramiko's tracker.
We apologize for the inconvenience of switching dependencies around; it was the least crummy option open to us. The announcement (including comments!) explains the history and decision making in greater detail.