Map plugin parameters through GUI

[daniel]

Be careful with AudioProcessorListener, it seems not to do what it suggests. I got bitten, see this thread:

AudioProcessorListener is not notified when host changes parameter

The AudioProcessorListener is only notified, when a parameter is changed via AudioProcessorParameter::setValueNotifyingHost(). But if the host performes the automatization it calls setValue rather than setValueNotifyingHost (which makes perfect sense). But the listener doesn't get this changes notified. Wouldn't it make sense to move the notification to setValue so that the listener gets every change?

On the other hand, the AudioProcessorValueTreeState::Listener unfortunately only sends valueChanged(), it would be great if they could send beginGestureChange() and endGestureChange() as well for exactly that purpose.