Package changes:
+signal-desktop 1.30.0 amd64
application/x-remmina; /usr/bin/remmina --edit %s; test=test -n "$DISPLAY"
x-content/audio-player; rhythmbox-client --select-source %s; test=test -n "$DISPLAY"
x-content/audio-cdda; rhythmbox-client --select-source %s; test=test -n "$DISPLAY"
+x-scheme-handler/sgnl; /opt/Signal/signal-desktop --no-sandbox %s; test=test -n "$DISPLAY"
application/sla; slic3r --gui %s; test=test -n "$DISPLAY"
model/x-wavefront-obj; slic3r --gui %s; test=test -n "$DISPLAY"
model/x-geomview-off; slic3r --gui %s; test=test -n "$DISPLAY"