removed :tweak-asgard-style
replaced mpg123/mplayer with mpv, renamed :playmp3 to :playmedia, :stopmp3 to :stopmedia
improved tilda color-scheme for pseudographic apps
updated readme about :playmedia and :stopmedia
attempt to fix gtk3 context menu
updated os-release
fixed :stopmedia notification
attempt to unify GTK2 and GTK3 look and save Droid Sans as the only main font