Resolve "Time vectors are saved inconsistently"

Closes #73 (closed)

• Write measurement time vector t to HDF5 measurement file

lisainstrument/instrument.py

@@ -1550,6 +1550,7 @@ class Instrument:
             logger.debug("Writing metadata and physics time dataset to '%s'", output)
 
             self.write_metadata(hdf5)
+            hdf5['t'] = self.t
             hdf5['physics_t'] = self.physics_t
             hdf5['telemetry_t'] = self.telemetry_t