gnu: r-wgcna: Update to 1.60.

* gnu/packages/bioinformatics.scm (r-wgcna): Update to 1.60.

gnu: r-qtl: Update to 1.41-6.

* gnu/packages/bioinformatics.scm (r-qtl): Update to 1.41-6.

gnu: r-seqinr: Update to 3.4-5.

* gnu/packages/bioinformatics.scm (r-seqinr): Update to 3.4-5.

gnu: r-optparse: Update to 1.4.4.

* gnu/packages/bioinformatics.scm (r-optparse): Update to 1.4.4.

gnu: r-bookdown: Update to 0.4.

* gnu/packages/bioinformatics.scm (r-bookdown): Update to 0.4.

gnu: r-tclust: Update to 1.2-7.

* gnu/packages/statistics.scm (r-tclust): Update to 1.2-7.

gnu: r-car: Update to 2.1-5.

* gnu/packages/statistics.scm (r-car): Update to 2.1-5.

gnu: r-rcppeigen: Update to 0.3.3.3.0.

* gnu/packages/statistics.scm (r-rcppeigen): Update to 0.3.3.3.0.

gnu: r-pbapply: Update to 1.3-3.

* gnu/packages/statistics.scm (r-pbapply): Update to 1.3-3.

gnu: r-vgam: Update to 1.0-4.

* gnu/packages/statistics.scm (r-vgam): Update to 1.0-4.

gnu: r-mclust: Update to 5.3.

* gnu/packages/statistics.scm (r-mclust): Update to 5.3.

gnu: r-flexmix: Update to 2.3-14.

* gnu/packages/statistics.scm (r-flexmix): Update to 2.3-14.

gnu: r-fastica: Update to 1.2-1.

* gnu/packages/statistics.scm (r-fastica): Update to 1.2-1.

gnu: r-cowplot: Update to 0.8.0.

* gnu/packages/statistics.scm (r-cowplot): Update to 0.8.0.

gnu: r-rann: Update to 2.5.1.

* gnu/packages/statistics.scm (r-rann): Update to 2.5.1.

gnu: r-statmod: Update to 1.4.30.

* gnu/packages/statistics.scm (r-statmod): Update to 1.4.30.

gnu: r-gdata: Update to 2.18.0.

* gnu/packages/statistics.scm (r-gdata): Update to 2.18.0.

gnu: r-sfsmisc: Update to 1.1-1.

* gnu/packages/statistics.scm (r-sfsmisc): Update to 1.1-1.

gnu: r-googlesheets: Update to 0.2.2.

* gnu/packages/statistics.scm (r-googlesheets): Update to 0.2.2.

gnu: r-tidyr: Update to 0.6.3.

* gnu/packages/statistics.scm (r-tidyr): Update to 0.6.3.