message: Use constructor init list for control text in DiggerDirection
diff: -DiggerDirection::DiggerDirection()
  +DiggerDirection::DiggerDirection() :
  + btnCancel{"Cancel"}
  {
  text("Direction");
  init();
  @@ -48,7 +49,6 @@ void DiggerDirection::init()
  btnEast.click().connect(this, &DiggerDirection::btnDiggerEastClicked);
  add(&btnCancel, 5, 140);
  - btnCancel.text("Cancel");
  btnCancel.size(64, 25);
  btnCancel.click().connect(this, &DiggerDirection::btnCancelClicked);
  }
  