- udev_enumerate_remove_matches()

- test (now fixed) /dev/tape/ links

- libudev: return proper errno or set errno

- /run/udev/control socket

(add ConditionVirtualization=!pidns)

- move:

udevd -> --libexecdir

udevadm -> --bindir

- kill rules_generator:

- no longer rename netifs in kernel namespace

- drop persistent optical names

- do not create rules on-the-fly, require explicit configuration

for netifs and optical drives

- properly document what system management needs to put

into rules files

- remove RUN+="socket:"

- remove deprecated trigger --type=failed logic

- remove deprecated BUS=, SYSFS{}=, ID= keys

- kill tabs?