- Add a new Log() function to replace ad-hoc std::cout calls wrapped in debugMode checks

- Remove debugMode from classes that don't need it (i.e all of them)

src/overlay.h

@@ -27,13 +27,10 @@ class Overlay
     int getMarginBottomRight();
     int getFontsizeBottomRight();
 
-    void setDebugMode(const bool debugModeIn);
-
   private:
     const std::string overlayInput;
     int margin;
     int fontsize;
-    bool debugMode = false;
 
     QString topLeftTemplate;
     QString topRightTemplate;