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/Editor.qrc

@@ -12,7 +12,7 @@
         <file>icons/16x16/accessories-text-editor.png</file>
         <file>icons/16x16/list-add-green.png</file>
         <file>icons/16x16/list-remove-red.png</file>
-        <file>icons/mirror_response.png</file>
+        <file>icons/invert_response.png</file>
         <file>icons/normalize_response.png</file>
         <file>icons/power_off.png</file>
         <file>icons/power_on.png</file>
@@ -22,5 +22,6 @@
         <file>translations/qtbase_de.qm</file>
         <file>icons/16x16/go-up.png</file>
         <file>icons/reset_response.png</file>
+        <file>icons/resize_corner.png</file>
     </qresource>
 </RCC>