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/FrequencyPlotScene.h

@@ -37,8 +37,9 @@ public:
 	double yToDb(double y);
 	double dbToY(double db);
 
-	double getZoom() const;
-	void setZoom(double value);
+	double getZoomX() const;
+	double getZoomY() const;
+	void setZoom(double zoomX, double zoomY);
 
 	int getBandCount() const;
 	virtual void setBandCount(int value);
@@ -54,6 +55,7 @@ protected:
 private:
 	void updateSceneRect();
 
-	double zoom = 1.0;
+	double zoomX = 1.0;
+	double zoomY = 1.0;
 	int bandCount = -1;
 };