JSON file changes

MString.h

@@ -165,6 +165,12 @@ namespace coreutils {
       
 //      MString &operator<<(std::ostream (*f)(std::ostream&) );
       MString &operator<<(std::basic_ostream<char> (*pf)(std::basic_ostream<char>&));
+
+      ///
+      /// 
+      ///
+
+      MString &operator<<(std::ostream &out);
       
       ///
       ///
@@ -302,6 +308,12 @@ namespace coreutils {
 
     protected:
       void setSize(int size);
+
+      ///
+      /// This method is called whenever a change is made to the MString storage.
+      ///
+
+      virtual void onChange();
       
     private:
       int bufferSize = 0;