https://cerebrux.net/2018/05/14/ulauncher-%ce%bf-%ce%bc%cf%8c%ce%bd%ce%bf%cf%82-app-launcher-%cf%80%ce%bf%cf%85-%ce%b8%ce%b1-%cf%87%cf%81%ce%b5%ce%b9%ce%b1%cf%83%cf%84%ce%b5%ce%af%cf%84%ce%b5-%cf%80%ce%bf%cf%84%ce%ad/