Allow nested attributes for parts in editions
Allow nested attributes for parts in editions

theodi/publisher,leftees/publisher,telekomatrix/publisher,alphagov/publisher,alphagov/publisher,alphagov/publisher,leftees/publisher,theodi/publisher,leftees/publisher,leftees/publisher,telekomatrix/publisher,theodi/publisher,telekomatrix/publisher,theodi/publisher,telekomatrix/publisher