id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type 601185984,MDExOlB1bGxSZXF1ZXN0NDA0NDgzMTc2,3976,Proposal for better error message about in-place operation,31126826,closed,0,,,2,2020-04-16T15:46:56Z,2020-06-24T14:41:06Z,2020-06-24T14:41:06Z,CONTRIBUTOR,,0,pydata/xarray/pulls/3976,"Trying to make error message slightly more informative when the user might expect automatic alignment with in-place operation. - [X] Closes #3910 - [ ] Tests added - [X] Passes `isort -rc . && black . && mypy . && flake8` - [ ] Fully documented, including `whats-new.rst` for all changes and `api.rst` for new API ","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/3976/reactions"", ""total_count"": 2, ""+1"": 2, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull 580646897,MDExOlB1bGxSZXF1ZXN0Mzg3ODE0OTU0,3860,Fix multi-index with categorical values.,31126826,closed,0,,,2,2020-03-13T14:44:59Z,2020-03-13T19:55:07Z,2020-03-13T19:55:07Z,CONTRIBUTOR,,0,pydata/xarray/pulls/3860,"@fujiisoup Would you mind reviewing this PR? The bug was actually straightforward. - [X] Closes #3674 - [X] Tests added - [X] Passes `isort -rc . && black . && mypy . && flake8` - [X] Fully documented, including `whats-new.rst` for all changes and `api.rst` for new API","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/3860/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull