Cmusic

* new `queue` command, add songs to be played after you have already started playing them.
* changed `q` keybind to `s` for skip.
* improved the README

**Full Changelog**: https://github.com/Kokonico/cMusic/compare/1.1.0...1.2.0

* added `del` command to delete songs
* fixed `--shuffle`
* fixed rare error in indexing caused by not generated a "safe" filename
* fixed `flush` command

improved edit GUI to be on par with index GUI and updated `objlog` dependency.

* improved crash alert by making it not instantly disappear if within tmux.

* updated `version` command

* fixed database leak and bug relating to it