gnu: r-glmnet: Update to 2.0-12. * gnu/packages/statistics.scm (r-glmnet): Update to 2.0-12.
gnu: r-lambda-r: Update to 1.2. * gnu/packages/statistics.scm (r-lambda-r): Update to 1.2.
gnu: r-gridextra: Update to 2.3. * gnu/packages/statistics.scm (r-gridextra): Update to 2.3.
gnu: r-dplyr: Update to 0.7.3. * gnu/packages/statistics.scm (r-dplyr): Update to 0.7.3.
gnu: r-crayon: Update to 1.3.4. * gnu/packages/statistics.scm (r-crayon): Update to 1.3.4.
gnu: r-svglite: Update to 1.2.1. * gnu/packages/statistics.scm (r-svglite): Update to 1.2.1.
gnu: r-mgcv: Update to 1.8-21. * gnu/packages/statistics.scm (r-mgcv): Update to 1.8-21.
gnu: r-caret: Update to 6.0-77. * gnu/packages/statistics.scm (r-caret): Update to 6.0-77. [propagated-inputs]: Remove r-car; add r-recipes and r-withr.
gnu: r-rstudioapi: Update to 0.7. * gnu/packages/statistics.scm (r-rstudioapi): Update to 0.7.
gnu: r-openssl: Update to 0.9.7. * gnu/packages/statistics.scm (r-openssl): Update to 0.9.7. [inputs]: Replace openssl with libressl.
gnu: r-tidyr: Update to 0.7.1. * gnu/packages/statistics.scm (r-tidyr): Update to 0.7.1.
gnu: r-gdtools: Update to 0.1.6. * gnu/packages/statistics.scm (r-gdtools): Update to 0.1.6.
gnu: r-minimal: Update to 3.4.1. * gnu/packages/statistics.scm (r-minimal): Update to 3.4.1.
gnu: r-tidyr: Update to 0.7.0. * gnu/packages/statistics.scm (r-tidyr): Update to 0.7.0. [propagated-inputs]: Remove r-lazyeval; add r-glue, r-purrr, r-rlang, and r-tidyselect.
gnu: Add r-tidyselect. * gnu/packages/statistics.scm (r-tidyselect): New variable.
gnu: r-tclust: Update to 1.3-1. * gnu/packages/statistics.scm (r-tclust): Update to 1.3-1.
gnu: r-fastcluster: Update to 1.1.24. * gnu/packages/statistics.scm (r-fastcluster): Update to 1.1.24.
gnu: r-rcpparmadillo: Update to 0.7.960.1.2. * gnu/packages/statistics.scm (r-rcpparmadillo): Update to 0.7.960.1.2.
gnu: r-plotrix: Update to 3.6-6. * gnu/packages/statistics.scm (r-plotrix): Update to 3.6-6.
gnu: r-httr: Update to 1.3.1. * gnu/packages/statistics.scm (r-httr): Update to 1.3.1. [propagated-inputs]: Remove r-digest and r-stringr.