This is not part of Zrythm but is used with Zrythm.

Originally under the GNU GPLv2 or later,
Copyright (C) 2015 Robin Gareus <robin@gareus.org>

Taken from https://github.com/x42/plumbing.lv2/
on 11 March 2022.

Changes applied:
* Meson build system
* Add MIDI output ports in .ttl
