MJA missing 'observation' row

The confusion matrix that is returned by BayesModelComparison.calc_justifiability_analysis contains a column for the BME of the models on the observation, but not the corresponding row of the observation on the model outputs. For comparison, see Fig.1 of 'Scheurer, Stefania, et al. "Surrogate-based Bayesian comparison of computationally expensive models: application to microbially induced calcite precipitation." Computational Geosciences 25.6 (2021): 1899-1917.'