I find this makes it easier to have the upper octave to play the octave note
over the root plus add a bit of range above that for soloing over a bassline
played on the bottom row.

Building with Qt 5.15 failed with the following error:

../widgets/pixmapdial.cpp:231:26: error: aggregate ‘QPainterPath ballPath’ has incomplete type and cannot be defined
  231 |             QPainterPath ballPath;
      |                          ^~~~~~~~
../widgets/pixmapdial.cpp:278:26: error: aggregate ‘QPainterPath ballPath’ has incomplete type and cannot be defined
  278 |             QPainterPath ballPath;
      |                          ^~~~~~~~

Signed-off-by: Alex Tsitsimpis <alex.tsitsimpis@gmail.com>