FIX: execute callback on files in exploreDirectory as well.
Update XDG searcher to work with the changes in the Database API.
FIX: do not filter by OnlyShowIn (GNOME Terminal uses it).
Add support for page up, page down and key repeat.
FIX: another minor fix for exploreDirectory.
Upgrade to atom-shell 0.16.0, add support for persistent NeDB database.