Changes: - Helvum has been ported to libadwaita, and now requires libadwaita >= 1.3 to build. - The graph UI has been redesigned to fit the libadwaita style and to improve usability and looks. Nodes now have a background, ports are split into a label and a round handle, and more minor changes. - Ports are now added and removed more reliably from nodes, and are sorted by name. - An "About" window has been added, and can be opened using the new primary menu, opened by a button in the headerbar. - The application no longer enters an unusable state if the app can't connect to the pipewire server, or loses connection. Instead, the app will attempt to reconnect on an interval, and display a banner in the UI to notify the user that the app is not connected.