pypesto.ensemble.ensemble.EnsemblePrediction.compute_chi2 incorrectly assumes all edatas have equal number of timepoints

[dweindl]

pypesto.ensemble.ensemble.EnsemblePrediction.compute_chi2 incorrectly assumes all amici_objective.edatas have equal number of timepoints, here:

pyPESTO/pypesto/ensemble/ensemble.py

Lines 440 to 448 in e389257

	for i_cond in range(n_conditions):
	# get measurements and put into right form
	y_meas = amici_objective.edatas[i_cond].getObservedData()
	y_meas = np.array(y_meas)
	# bring into shape (n_t,n_y)
	y_meas = y_meas.reshape(
	amici_objective.edatas[0].nt(),
	amici_objective.edatas[0].nytrue(),
	)

This isn't necessarily correct.