SW-516: remove 'options' from messagebus classes, as these were qpid options, and we're using proton now. At this moment there is no need for such options. These can be added later when needed.

Task SW-516: Switch from qpid.messaging library to Apache Qpid Proton so we can use the message bus with Python 3

Task #9931 #10057: merged feature branch ^/branches/ltaingest-Task9931 into LOFAR-Release-2_19 branch

Task #8531: start and stop listening can now be used without -with- which defaults to start listening now. refactored some code and added support in RPC for multiple arguments.

Task #8531: Remove support for Binary message content and ensure Strings are always unicode when sent. Also make sure 'content' is first positional argument for EventMessage due to the way the message factory works. This breaks TreeStatusEvents.py which should use named arguments instead.

Task #8571: Replaced very modern python expression by more obsolete set expression so that primitive machines can handle this

Task #8571: Replaced very modern python expression by more obsolete set expression so that primitive machines can handle this

Task #8571: Initial import of messaging python libraries based on work from Marcel Loose for APERTIF.