Hydrogen ( Advanced drum machine )

Hydrogen is an advanced drum machine for GNU/Linux.  It's main goal
is to bring professional yet simple and intuitive pattern-based drum
programming.

Optional dependencies:

* JACK
* JACKSESSION
* CoreAudio
* CoreMidi
* PortAudio
* PortMidi
* PulseAudio
* LASH
* LIBLRDF
* RUBBERBAND

These will be found automatically.