Changelog:
- Clock source and Self connect restriction options have been added to Setup / Settings / Advanced (only enabled when JACK D-BUS control interface is in effect).
- Added preliminary support for JACK CV signal-type ports and JACK OSC event-type ports (Graph only).
- Left-clicking on the system-tray icon now simply toggles the main widget visibility, disregarding if already hidden undercover to other windows.
- Graph nodes and ports are now presented with some gradient background.
- Fixed Setup dialog Cancel (or close) behavior when Settings > Parameters > Frames/Period (aka. buffer-size) it's the only setting that's changed.
- Early preparations for being able to build with QT 5.15 and later.