Each pattern line now has its own color that repeats in a rainbow manner.
 * Use Instrument::get_midi_out_note for MIDI export
 * Assign sequential midi_out_notes to instruments instead of middle C
 * Modify MIDI note numbers in drumkits to match GM spec
 * Initialize p_midiDriverOut to CoreMidi
Document cross-compiling using MXE.
Complete cross-compiling guide. For now.
Midi Foot Pedal (Midi CC 04) basic management
Merge remote-tracking branch 'upstream/master'
Instrument Editor tab - makes space for hihat controls
GUI for hihat instrument management
Implement a press&hold for the button.
Handy for hihat range control instead of having to click 127 times!
Cymbal Choke
Alsa driver and Midi Aftertouch
Jack driver and Midi Aftertouch
Cymbal Choke
Alsa driver and Midi Aftertouch
Jack driver and Midi Aftertouch
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/core/src/IO/midi_input.cpp
Merge branch 'master' of https://github.com/hydrogen-music/hydrogen into cymbal_choke

Conflicts:
	src/core/src/IO/midi_input.cpp
added MIDI action "SELECT_PREV_PATTERN_RELATIVE"
Merge remote-tracking branch 'upstream/master'
git ignore for code::blocks