Performance improvements: - Avoid to call $neighbor->parent_link twice in a row in children() - Check _children_loaded flag before checking adaptor in load_children_if_needed
Performance improvements:
- Avoid to call $neighbor->parent_link twice in a row in children()
- Check _children_loaded flag before checking adaptor in load_children_if_needed

Ensembl/ensembl-compara,ckongEbi/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,dbolser-ebi/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,ckongEbi/ensembl-compara,etapanari/ensembl-compara,kumarsaurabh20/ensembl-compara,etapanari/ensembl-compara,etapanari/ensembl-compara,Ensembl/ensembl-compara,kumarsaurabh20/ensembl-compara,kumarsaurabh20/ensembl-compara,ckongEbi/ensembl-compara,dbolser-ebi/ensembl-compara,Ensembl/ensembl-compara,kumarsaurabh20/ensembl-compara,dbolser-ebi/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,etapanari/ensembl-compara,danstaines/ensembl-compara