MonitorCtrl-L (form feed) can be used to clear the screen in the monitor.More commands support command-line completion. Block devices in system emulationFilenames can be JSON objects preceded by "json:", for example json:{'driver':'raw','file.filename':'test.img'}. This new syntax can be used in the file property for -drive, but also in qemu-io, qemu-img or backing file names.The new "change-bac..