MASS, zoo, lattice, Rcpp, stats, utils, grDevices, graphics
MASS, zoo, Rcpp, stats, utils, grDevices, graphics, abind
knitr, rmarkdown, gridExtra, expm, MCS, quantmod, codetools
knitr, rmarkdown, gridExtra, expm, MCS, quantmod (>= 0.4.28),
codetools, attempt