Version 2.5.0

• Upgraded pamqp to v2.0.0.
  • Python 3 keys will now always be of type str.
  • For more information see https://pamqp.readthedocs.io/en/latest/history.html
• Properly wait until the inbound queue is empty when break_on_empty is set [#63] - Thanks TomGudman.
• Fixed issue with Management queue/exchange declare when the passive flag was set to True.