inconsistencies with jack1 meta-data

[falkTX]

I can confirm now two things, maybe you want to write them down yourself this time: Jack1 cleans metadata automatically when a client closes. jack2 does not. I think that is good behaviour and in fact jack1 came first so jack2 should behave the same
and second: QJackCtl graph view updates automatically if I change pretty names or track order in jack1 but not in jack2. That maybe qjackctl but more likely it is jack2

[falkTX]

First issue is solved, jack2 now cleans up client properties.
2nd issue likely just needs notification callback to be sent whenever properties change.

[falkTX]

First issue is solved, jack2 now cleans up client properties.

confirmed this is still an issue after all. I was testing with carla that cleans up the properties it registers.
but I have a simple way to reproduce the issue now, so this will be fixed soon