- Loading a QML file in place of src/gui/UI.qml is now possible via
-l / --load-qml instead of taking the first positional argument
- New option to start application in tray without showing a window
- --help and --version
Use native ListModel which require a lot of changes, but should be
much faster than the old way which exponentially slowed down to a crawl.
Also fix some popup bugs (leave/forget).
Not working yet: side pane keyboard controls, proper highlight,
room & member filtering, local echo replacement