Adding not implemented exception macro for faster not-implementing stuff

include/ITAException.h

@@ -61,6 +61,7 @@ public:
 #define ITA_EXCEPT0( TYPE ) throw ITAException( ITAException::TYPE, __FUNCTION__ );
 #define ITA_EXCEPT1( TYPE, REASON ) throw ITAException( ITAException::TYPE, __FUNCTION__, REASON );
 #define ITA_EXCEPT_INVALID_PARAMETER( REASON ) throw ITAException( ITAException::INVALID_PARAMETER, __FUNCTION__, REASON );
+#define ITA_EXCEPT_NOT_IMPLEMENTED  throw ITAException( ITAException::NOT_IMPLEMENTED, __FUNCTION__ );
 
 //! STL stream output operator
 ITA_BASE_API std::ostream& operator<<( std::ostream& os, const ITAException& ex );