Add 'mHD' and 'HDLight' to other values and `~` as possible separator
Add 'kz' to list of common word and 'dvd-r' pattern
Avoid finding release group instead of title
Fix extension guess not attached to its node
Add --unidentified option to add unidentified leaves to results. Fix #152

option only affects command line tool. Using the API, it will always retrieve the 'unidentified' property.