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
94153361,MDExOlB1bGxSZXF1ZXN0OTQxNTMzNjE=,1131,closed,0,Fix #1040: diff dim argument should be optional,941907,"* {Dataset,DataArray}.diff dim argument defaults to last dimension

* add test cases

* add changelog",2016-11-17T11:55:53Z,2019-01-14T21:18:18Z,2019-01-14T21:18:18Z,,e37e925b98627c04cb71504a2535b698eae38ce1,,,0,27bccfcd7ca8b0b0c2d9b5d8b69bf9fc816fa143,bb87a9441d22b390e069d0fde58f297a054fd98a,NONE,,13221727,https://github.com/pydata/xarray/pull/1131,