This is a patch release to address a couple small bugs
Previously, when running calcPerformance(), if the
variance of the random interecepts were 0 this would throw an error when
trying to obtain bootstrap confidence intervals for the PE ratio. This
update adds error handling for this issue and skips the bootstrapping;
when the variance of random intercepts is 0, confidence intervals for
the PE ratio are not calculated.
This patch also makes an update to the color of gridlines in the
plots produced by plotN(), plotPerformance(),
plotReliability(), plotEstimates(), and
plotCalibration().