Fix get_link_names for groups with a single link - #479

Fix get_link_names for groups with a single link#479

ChickenisLegit wants to merge 4 commits into

compas-dev:maincompas-dev/compas_fab:mainfrom

ChickenisLegit:fix-get-link-names-single-linkChickenisLegit/compas_fab:fix-get-link-names-single-linkCopy head branch name to clipboard