added AssemblySliceAdaptor
added AssemblySliceAdaptor

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