Include possibility for arbitrary summary data.

This adapts to the upstream API change in opm-data, and adds a
proof-of-concept dummy TCPU field.

opm/autodiff/SimulatorBase_impl.hpp

@@ -191,7 +191,7 @@ namespace Opm
 
                 // No per cell data is written for initial step, but will be
                 // for subsequent steps, when we have started simulating
-                output_writer_.writeTimeStepWithoutCellProperties( timer, state, well_state, {} );
+                output_writer_.writeTimeStepWithoutCellProperties( timer, state, well_state, {}, {} );
 
                 report.output_write_time += perfTimer.stop();
             }