Some modern keyboards spread out patches over various banks,
and group them using explicit "PatchMIDICommands".
A given PatchBank does not have a common MIDI Bank.
Previously those PatchBanks were not listed in the MIDI Patch
Selector, which is based on MIDI Bank + Program grid.
The current view is some sort of compromise, retaining a
per MIDI-bank view, but allowing Monatages/performance mappings.
The Patch Change *dialog*, or dropdown is more useful for those
sparse modern mappings.
* allow gtk_pianokeyboard to respond to y-axis click position
and include MIDI velocity with note-on signal
* add configuration settings to virual-keyboard
min/max velocity, keyboard-layout
* add a CC7 controller knob
Copyright-holder and year information is extracted from git log.
git history begins in 2005. So (C) from 1998..2005 is lost. Also some
(C) assignment of commits where the committer didn't use --author.
