RprobitB 2.0.0

Replaced the former multi-step workflow with fit(), which accepts an empirical data frame or simulates data when data = NULL.
Added correlated and uncorrelated normal, positive log-normal, and negative log-normal random effects through named random_effects specifications.
Added latent_class_effects to fit(), which names the effects that differ between the latent classes.
Added interpret(), which reads the estimates as compensations between effects, such as the willingness to pay, and as average marginal effects or marginal effects at the average covariate values, each with posterior uncertainty.
Added the update() method for fitted models, which refits with a modified specification.
Added decider-level WAIC and PSIS-LOO and replaced the harmonic-mean marginal-likelihood estimator with bridge-sampling Bayes factors.
Reworked predict() and residuals() around posterior uncertainty.
Added posterior diagnostics and standard bayesplot displays through summary() and plot().
Improved numerical efficiency of the Gibbs sampler.
Rewrote the vignettes: getting started, model variants, preference heterogeneity, posterior prediction, and model evaluation.

RprobitB 1.2.0

Fix in npar.RprobitB_fit(). Parameters for the covariance matrices of the mixing distributions have been miscounted.
Fix in sufficient_statistics(). There was a bug in calculating sufficient statistics in the ordered case.
Added function mode_approx() to approximate conditional posterior modes.
Documentation improvements.

logLik() method now returns a logLik object that can be passed to AIC() and BIC() methods from {stats}.
Small bug fixes for the ordered probit model case.

Print method for RprobitB_parameter.
Splitting the data set into a train and test part can now be done by the function train_test(). Consequently, the argument test_prob was removed in prepare_data() and simulate_choices().
The function simulate_choices() does not have the argument distr anymore. Instead, covariates can be supplied via the covariates argument. Consequently, the argument standardize was removed as well.
Simplified specifying the utility scale, see the help page of RprobitB_normalization().

The function compare is now called model_selection().
The function prepare is now called prepare_data().
The function simulate is now called simulate_choices() to not mask stats::simulate().
The function mcmc is now called fit_model().
The function choice_probs is now called choice_probabilities().