Added: Analysis panel which shows the calculated frequency response of the filters for the selected device and channel.

Improved: GUIs of GraphicEQ and Copy command can now be resized
Improved: GraphicEQ GUI can now be zoomed separately in X and Y direction using mouse wheel on rulers. Also now shows values at mouse position.
Fixed: Original APO was not released when E-APO was shutting down, leading to a memory leak.

Editor/widgets/FrequencyPlotVRuler.h

@@ -29,4 +29,6 @@ public:
 
 protected:
 	void paintEvent(QPaintEvent*) override;
+	void wheelEvent(QWheelEvent* event) override;
+	void mouseMoveEvent(QMouseEvent* event) override;
 };