helper module to keep track of types of mapping failures
helper module to keep track of types of mapping failures

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