fix to a bug that prevented columns corresponsing to singlular relationships being modified
fix to a bug that prevented columns corresponsing to singlular relationships being modified

Ensembl/public-plugins,muffato/public-plugins,Ensembl/public-plugins,andrewyatz/public-plugins,Ensembl/public-plugins,muffato/public-plugins,andrewyatz/public-plugins,andrewyatz/public-plugins,andrewyatz/public-plugins,muffato/public-plugins,muffato/public-plugins,andrewyatz/public-plugins