1 - move /lib/udev/devices/ to tmpfiles
3 - trigger --subsystem-match=usb/usb_device
5 - test (now fixed) /dev/tape/ links
13 - deprecate and warn about RUN+="socket:"
17 - return object with *_unref()
18 - udev_monitor_from_socket()
19 - udev_queue_get_failed_list_entry()