[X] Get OSDs for the brightness and audio keys sort of working.
[bin] Go back to the package mmd2pdf.
[bin] OSD-capable volume/brightness button apps.
[bin] Bring dotfiles backup up-to-date with gitignore.
[X] Switch to Dunst for lighter notifications.
[WM] Add some more apps.
[Emacs/TeX] More steps to get things up and running.