-make complete gui (expression pedal settings, usb settings, effect level, preset level)
-handling presets (saving, exporting to xml patches)
-buildsystem (install knob.png to share dir, don't use inline knob pixbuf)
-various fixes to MIDI IN messages handling
-guess device port when user doesn't explicitly provide it (don't use hardcoded "hw:1,0,0")
-optimizations