added new type column entry to platypus exon
added new type column entry to platypus exon

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