1.3.3: * Now depends on glibmm 2.4. * Addef and used FieldAttributes. * Connection: - The destructor closes the connection. - Added get_last_insert_id(). * DataModel: get_value_at() memory management fixed. * Transaction: constructor fixed. * Value: - Implemented the constuctors. - Added type_to_string() and type_from_string(). (Murray Cumming)