- Remove "_" prefix on members

- Remove aspect check getBlurredBackground as it is not needed

src/overlay.h

@@ -27,13 +27,13 @@ class Overlay
     int getMarginBottomRight();
     int getFontsizeBottomRight();
 
-    void setDebugMode(const bool debugMode) { _debugMode = debugMode; }
+    void setDebugMode(const bool debugModeIn) { debugMode = debugModeIn; }
 
   private:
     const std::string overlayInput;
     int margin;
     int fontsize;
-    bool _debugMode = false;
+    bool debugMode = false;
 
     QString topLeftTemplate;
     QString topRightTemplate;