the read_igis_from_summary factored out into utils; tested and works
the read_igis_from_summary factored out into utils; tested and works

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