Python light pseudo-wrapper on Seurat.
It assumes that R version 3.4.1 (2017-06-30) -- "Single Candle" is running (this has been developed in the genepattern/gpnb:1.0 container which is downstream of genepattern/genepattern-notebook:latest as of 2018-10-30). It also assumes that Seurat 2.3.4 is running (conda install -y -c bioconda r-seurat==2.3.4).