A More Modern Gtk3 Jalv Frontend

My simple single-plugin LV2 host, Jalv , isn't quite sure whether it's a developer utility or polished user program, but in any case, it had become stale in the past few years and needed an update. Most of those changes are internal and only interesting for those who use it as a basis for larger systems. The internals have been largely rewritten to support various things, but this post isn't about…