- dropped Python 2 support, not supported by the package
- update to version 5.0.0:
* Fix for credentials exposure (https://github.com/jasonrbriggs/stomp.py/pull/244)
* Check for ``STOMP_SKIP_HOSTNAME_SCAN`` environment variable before extending ``LOCALHOST_NAMES``
* Remove python2 backwards compatibility
* Update dockerfile for better local testing
* Fix docker and travis setup, so there are consistent builds both locally and via CI
* Drop deprecated start/stop methods from connection (issue https://github.com/jasonrbriggs/stomp.py/issues/257)
* Fix for missing return in get_ssl (https://github.com/jasonrbriggs/stomp.py/pull/258)
* Clear heartbeat event after heartbeat loop ends (https://github.com/jasonrbriggs/stomp.py/pull/260)
* Update listener to move receive/message_received/heartbeat_received vars inside the 'with' blocks (https://github.com/jasonrbriggs/stomp.py/pull/252)
* Simplify logging calls
* Tidy up listeners (correct the behaviour of TestListener)
* Fix problem with double-disconnect notification (ihttps://github.com/jasonrbriggs/stomp.py/issues/245)
* Add facility for PrintingListener to write to log rather than print statements