gnu: Add plotly. * gnu/packages/statistics.scm (r-plotly): New variable.
gnu: Add viridis. * gnu/packages/statistics.scm (r-viridis): New variable.
gnu: Add topGO. * gnu/packages/bioinformatics.scm (r-topgo): New variable.
gnu: Add matrixStats. * gnu/packages/statistics.scm (r-matrixstats): New variable.
gnu: Add R.rsp. * gnu/packages/statistics.scm (r-r-rsp): New variable.
gnu: Add R.cache. * gnu/packages/statistics.scm (r-r-cache): New variable.
gnu: Add R.utils. * gnu/packages/statistics.scm (r-r-utils): New variable.
gnu: Add R.oo. * gnu/packages/statistics.scm (r-r-oo): New variable.
gnu: Add R.methodsS3. * gnu/packages/statistics.scm (r-r-methodss3): New variable.
gnu: Add base64enc. * gnu/packages/statistics.scm (r-base64enc): New variable.
gnu: Add DT. * gnu/packages/statistics.scm (r-dt): New variable.
gnu: Add SparseM. * gnu/packages/statistics.scm (r-sparsem): New variable.
gnu: Add GO.db. * gnu/packages/bioinformatics.scm (r-go-db): New variable.
gnu: Add GenomicFeatures. * gnu/packages/bioinformatics.scm (r-genomicfeatures): New variable.
gnu: Add rtracklayer. * gnu/packages/bioinformatics.scm (r-rtracklayer): New variable.
gnu: Add GenomicAlignments. * gnu/packages/bioinformatics.scm (r-genomicalignments): New variable.
gnu: Add SummarizedExperiment. * gnu/packages/bioinformatics.scm (r-summarizedexperiment): New variable.
gnu: Add Rsamtools. * gnu/packages/bioinformatics.scm (r-rsamtools): New variable.
gnu: Add Biostrings. * gnu/packages/bioinformatics.scm (r-biostrings): New variable.
gnu: Add BiocParallel. * gnu/packages/bioinformatics.scm (r-biocparallel): New variable.