Log Message:
(math/R-DAAG) Updated 1.25.4 to 1.25.6

Changes in DAAG version 1.25.5
   o Add alc2018 dataset supplementing grog dataset with data for the
     years 2005 to 2018.
   o The qgam package, with functions qgam (single quantile) and mgam
     (multiple quantiles) that allow for automatic selection of
     smoothing parameters when fitting quantiles, replaces quantreg in
     vignette simulate-varselect and in function bsnVaryNvar().

Changes in DAAG version 1.25.4-2
   o Add repPsych dataset holding summary results from Reproducibility
     Study: Psychology
   o The function DAAGtheme() has been modified to left adjust
     main titles and to use font 1.
   o Correct stated number of rows in the frostedflakes dataset to 100.