We've been having problems with BioMart downloads caused by trying to download too many columns at once (#194). Until we figure out how to fully work around that, this PR allows us to designate a list of BioMart ensembles that we should skip during downloads.
We've been having problems with BioMart downloads caused by trying to download too many columns at once (#194). Until we figure out how to fully work around that, this PR allows us to designate a list of BioMart ensembles that we should skip during downloads.