message: Decrease zoom speed in pipeline view
diff: @@ -73,7 +73,7 @@ PipelineWidget::PipelineWidget(QWidget* parent) : QGraphicsView(parent) {
  }
  void PipelineWidget::wheelEvent(QWheelEvent* event) {
  - scaleView(pow((double)2, -event->delta() / 240.0));
  + scaleView(pow((double)2, -event->delta() / 350.0));
  }
  void PipelineWidget::scaleView(qreal scaleFactor) {
  