#include <string>
#include <vector>
+#include <sigc++/trackable.h>
#include <msp/datafile/objectloader.h>
#include <msp/time/timestamp.h>
class Block;
class Train;
-class Timetable
+class Timetable: public sigc::trackable
{
public:
class Loader: public Msp::DataFile::ObjectLoader<Timetable>