* 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.
