fix KeyError: "None of [Index(['0_x', '1_x', '0_y', '1_y'], dtype='object')] are in the [columns]" in find_objects#384

m-albert merged 6 commits intodask:maindask/dask-image:mainfrom

joshua-gould:find_objects_emptyjoshua-gould/dask-image:find_objects_emptyCopy head branch name to clipboard