Support for multiple connections in one input/output

[TheMonzel]

I tend to use sub-cores or cat cores running from a digital stage box to e.g. drums.

I might get the patch list wrong. I actually won't need this, if the idea is to create an independent patch list per console/stagebox/core - but this would feel a bit off.

[cj-vana]

I tend to do that as well, just not sure the best way to do this without creating a cluttered patch sheet.