+++++++
Changes
--------
* Added ``alias`` optional parameter to ``SSHClient`` and ``HostConfig`` for passing through from parallel clients.
Used to set an SSH host name alias, for cases where the real host name is the same and there is a need to
differentiate output from otherwise identical host names - 355. Thank you simonfelding.
* Parallel clients now read a common private key only once, reusing it for all clients it applies to,
to improve performance.
* Performance improvements for all clients when reading output.
* Output reading for all clients has been changed to be less prone to race conditions.
Fixes
------
* Calling ``ParallelSSHClient.join`` without ever running ``run_command`` would raise exception. Is now a no-op.