Create new genes in _objs_from_sth() without instantiating the canonical transcript.  Saves fetching a transcript for every gene.
Create new genes in _objs_from_sth() without instantiating the canonical
transcript.  Saves fetching a transcript for every gene.

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