gnu: r-mgcv: Update to 1.8-15. * gnu/packages/statistics.scm (r-mgcv): Update to 1.8-15.
gnu: r-plotly: Update to 4.5.2. * gnu/packages/statistics.scm (r-plotly): Update to 4.5.2. [propagated-inputs]: Remove r-plyr; remove r-viridis; add r-dplyr; add r-lazyeval; add r-purrr; add r-tibble; add r-viridislite.
gnu: Add r-purrr. * gnu/packages/statistics.scm (r-purrr): New variable.
gnu: Add r-viridislite. * gnu/packages/statistics.scm (r-viridislite): New variable.
gnu: Add r-batchjobs. * gnu/packages/statistics.scm (r-batchjobs): New variable.
gnu: Add r-fail. * gnu/packages/statistics.scm (r-fail): New variable.
gnu: Add r-bbmisc. * gnu/packages/statistics.scm (r-bbmisc): New variable.
gnu: Add r-checkmate. * gnu/packages/statistics.scm (r-checkmate): New variable.
gnu: Add r-backports. * gnu/packages/statistics.scm (r-backports): New variable.
gnu: Add r-sendmailr. * gnu/packages/statistics.scm (r-sendmailr): New variable.
gnu: Add r-pheatmap. * gnu/packages/statistics.scm (r-pheatmap): New variable.
gnu: Add r-matrix. * gnu/packages/statistics.scm (r-matrix): New variable.
gnu: Add r-hmisc. * gnu/packages/statistics.scm (r-hmisc): New variable.
gnu: Add r-rpart. * gnu/packages/statistics.scm (r-rpart): New variable.
gnu: r-rmarkdown: Ensure temporary files can be deleted. * gnu/packages/statistics.scm (r-rmarkdown)[arguments]: Add phase "copy-files-without-mode".
gnu: Add r-e1071. * gnu/packages/statistics.scm (r-e1071): New variable.
gnu: Add r-rtsne. * gnu/packages/statistics.scm (r-rtsne): New variable.
gnu: r-rmarkdown: Update to 1.0. * gnu/packages/statistics.scm (r-rmarkdown): Update to 1.0. [propagated-inputs]: Add "r-jsonlite" and "r-base64enc".
gnu: r-dplyr: Update to 0.5.0. * gnu/packages/statistics.scm (r-dplyr): Update to 0.5.0.
gnu: r-rcpparmadillo: Update to 0.7.400.2.0. * gnu/packages/maths.scm (armadillo-for-rcpparmadillo): Update to 7.400.2. * gnu/packages/statistics.scm (r-rcpparmadillo): Update to 0.7.400.2.0.