register region happens now in chunks of 1MB and caches this
register region happens now in chunks of 1MB and caches this

muffato/ensembl,Ensembl/ensembl,Ensembl/ensembl,at7/ensembl,Ensembl/ensembl,at7/ensembl,muffato/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,danstaines/ensembl,muffato/ensembl,james-monkeyshines/ensembl,at7/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,willmclaren/ensembl,danstaines/ensembl,willmclaren/ensembl,mjg17/ensembl,danstaines/ensembl,muffato/ensembl,at7/ensembl,mjg17/ensembl