1 - test (now fixed) /dev/tape/ links
3 - /run/udev/control socket
4 (add ConditionVirtualization=!pidns)
6 - move udevd -> --libexecdir
8 - allow path_id, usb_id, usb_db, pci_db as built-in?
10 - kill rules_generator:
11 - no longer rename netifs in kernel namespace
12 - drop persistent optical names
13 - do not create rules on-the-fly, require explicit configuration
14 for netifs and optical drives
15 - properly document what system management needs to put
18 - move udevadm -> --bindir
20 - remove deprecated trigger --type=failed logic
22 - remove deprecated BUS=, SYSFS{}=, ID= keys
24 - remove RUN+="socket:"
28 - libudev: return proper errno or set errno