new in 0.2
----------
 * physical and wien tuning now work properly.
 * support for natural tuning
new in 0.3
----------
 * "key" instead of "base" for key of natural tuning 
 * bugfix: A# instead of Bb for US-Alternate
 * bugfix: Note pointer removed after switching Tuning
 * Device adjustable in .kguitunerc by DSPDeviceName=/dev/...
   (/dev/stdin also possible)
 * bugfix: removed several compiler warnings (errors on some systems)
 * ".kdelnk"-file installs into "Multimedia" insteaed of "Applications"
new in 0.4
----------
 * trigger defaults to 0.6
 * pointer in logview better visible
 