MIDI output on set and song change?

[mxmilkiib]

As per #58 (comment)

In summary; MIDI output of set changes can be utilised to control external automation. I'm envisioning using a Mididings script to respond to Set changes. This would require the Set number to be transmitted.

Now that there is a Playlist function to switch between songs, it would seem that transmitting the position of the song in the playlist would also be useful.

Possibly this could be done in some combined form such as a msb+lsb format on both set and song change?