added back in lost methods identical_matches and positive_matches
added back in lost methods identical_matches and positive_matches

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