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
1523260646,PR_kwDOAMm_X85G2w0L,7427,Change .groupby fastpath to work for monotonic increasing and decreasing,4671621,open,0,,,6,2023-01-06T22:32:26Z,2023-02-25T22:51:37Z,,FIRST_TIME_CONTRIBUTOR,,0,pydata/xarray/pulls/7427,"This fixes GH6220 which makes it possible to use the fastpath for .groupby for monotonically increasing and decreasing values.

- [x] Closes #6220
- [x] Tests added
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
- [ ] New functions/methods are listed in `api.rst`
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