2.12.0

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.