Munge for Chr in HTSAdaptor as was for BAM Adaptor
Created by: rishidev
Putting in changes to munge_chr_id as was made for BAMAdaptor in a previous PR https://github.com/Ensembl/ensembl-io/pull/22/files
Created by: rishidev
Putting in changes to munge_chr_id as was made for BAMAdaptor in a previous PR https://github.com/Ensembl/ensembl-io/pull/22/files