see 0.8.3

Major changes

• New plot() method for simulated residuals (implemented in the performance
  package).

• plot() for check_model() was revised and now includes more accurate Q-Q
  plots for non-Gaussian models.

Minor Changes

• plot.check_model() now passes arguments size_point and size_line to the
  posterior predictive check plot.

• Minor changes regarding the latest update of ggplot2.