- fix some typos (thanks torstehu, 197)
- change how device rules are evaluated: lookup undecided rules on parent
device (fixes issue with filters not applying to subdevices of a matched
device, see 198)
- change builtin rules to not show loop devices with ``HintIgnore``, see 181
- change how is_external attribute is compute: use the value from udisks
directly (fixes issue with is_external property not behaving as expected,
see 185)
- add 'skip' keyword for rules to skip evaluation of further rules on this
device, and continue directly on the parent