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
916318941,MDU6SXNzdWU5MTYzMTg5NDE=,5454,Add coarsen.construct,2448579,closed,0,,,2,2021-06-09T15:08:35Z,2021-06-24T16:55:25Z,2021-06-24T16:55:25Z,MEMBER,,,,"Like `Rolling.construct` this would create a new reshaped array with extra dimensions that would usually be reduced over. It would be a light wrapper over `Variable._coarsen_reshape`

It make https://github.com/pydata/xarray/discussions/5119, and #2419 really easy without having to go through a MultiIndex+unstack operation which is somewhat arcane.
``` python
ds.coarsen(time=12).construct(dim=""year"").rename({""time"": ""month""})
```
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