upgrade dependencies to speed up installation of small_rna_maps (#559)
upgrade dependencies to speed up installation of small_rna_maps (#559)

* upgrade dependencies to speed up installation
* do not use samtools dependency
* use only sambamba dependency to treat bam inputs
ARTbio/tools-artbio,ARTbio/tools-artbio,ARTbio/tools-artbio,ARTbio/tools-artbio