Session info
## R version 3.5.1 (2018-07-02)
## Platform: x86_64-apple-darwin15.6.0 (64-bit)
## Running under: macOS High Sierra 10.13.4
##
## Matrix products: default
## BLAS: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRblas.0.dylib
## LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib
##
## locale:
## [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
##
## attached base packages:
## [1] stats graphics grDevices utils datasets methods base
##
## loaded via a namespace (and not attached):
## [1] compiler_3.5.1 backports_1.1.2 bookdown_0.7 magrittr_1.5
## [5] rprojroot_1.3-2 tools_3.5.1 htmltools_0.3.6 yaml_2.1.19
## [9] Rcpp_0.12.18 stringi_1.2.3 rmarkdown_1.10 knitr_1.20
## [13] xfun_0.3 stringr_1.3.1 digest_0.6.15 evaluate_0.10.1