id,node_id,number,state,locked,title,user,body,created_at,updated_at,closed_at,merged_at,merge_commit_sha,assignee,milestone,draft,head,base,author_association,auto_merge,repo,url,merged_by 29671328,MDExOlB1bGxSZXF1ZXN0Mjk2NzEzMjg=,327,closed,0,Cleanly apply generic ndarrays to DataArray.groupby,2002703,"This is special cased for np.ndarrays: applying to DataArrays is not only inefficient but would also be wrong if the applied function wanted to change metadata. Fixes #326 ",2015-02-20T03:47:15Z,2015-02-20T04:41:10Z,2015-02-20T04:41:08Z,2015-02-20T04:41:08Z,13cdb1eb4ac2f7b8ad88be705005dead93ef8356,,799013,0,57ea69c8988baf3d12ac3775e762ff45bed7ee71,3e3c84203c3f20515bb8d21ec72e9dcc0e2a568b,CONTRIBUTOR,,13221727,https://github.com/pydata/xarray/pull/327,