added section handle to xml output
Merge branch 'dev' of github.com:DeuxHuitHuit/entry_relationship_field into dev
Merge branch 'dev' of github.com:DeuxHuitHuit/entry_relationship_field into dev
Added missing php doc

Again, from Scrutinizer: https://scrutinizer-ci.com/g/DeuxHuitHuit/entry_relationship_field/inspections/da6d908e-c317-45bc-a2b5-9c244f2245cc/patches