- sticky bit for 'dead' pre-created devnodes

- have a $attrs{} ?

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

- warn about fallback of IMPORT{program} for built-in commands

- /run/udev/control socket

(add ConditionVirtualization=!pidns)

- move udevd -> --libexecdir

- allow path_id, usb_id, usb_db, pci_db as built-in?

- 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

- move udevadm -> --bindir

- remove deprecated trigger --type=failed logic

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

- remove RUN+="socket:"

- kill tabs?

- libudev: return proper errno or set errno