Request: Accept cram input to toil-exome

[Jeltje]

cram is increasingly popular and is easily convertible to bam (and vice versa).

The 1000 Genomes Project has lots of exome data, accessible through ftp, but in cram format.
For example:
ftp://ftp.1000genomes.ebi.ac.uk/vol1/ftp/data_collections/1000_genomes_project/data/CHS/HG00472/exome_alignment

Since the toil workflows already accept ftp inputs, it save users a download-and-convert.