prefer using over typedef

GUI/Models/Types/DoubleDescriptor.h

@@ -80,7 +80,7 @@ public:
     function<QString()> path = nullptr; //<! Path describing  this value. Used e.g. for undo/redo
 };
 
-typedef QList<DoubleDescriptor> DoubleDescriptors;
+using DoubleDescriptors = QList<DoubleDescriptor>;
 
 
 #endif // BORNAGAIN_GUI_MODELS_TYPES_DOUBLEDESCRIPTOR_H