Removed get_all_ExternalFeatures method, now borrowed from parent where the corresponding adaptor handle the circular slice case
Removed get_all_ExternalFeatures method, now borrowed from parent where the corresponding adaptor handle the circular slice case

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