MIDI clock input?

[bptremblay]

This is a feature request. After trying this library I am very happy with this solid little sequencer. I am loading/saving patterns to JSON, even switching patterns on the fly while playing, and FifteenStep keeps time.
Are there any plans for external MIDI clock support?
If I can get it working, I may open a PR.
Thanks,
Ben

[bptremblay]

... ahh this would mean I need to sync the millis()-based shuffle to an external trigger...
tempting to quantize the shuffle to the MIDI clock pulse, but that would be obscene.