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
559864146,MDU6SXNzdWU1NTk4NjQxNDY=,3750,isort pre-commit hook does not skip text files,10194086,closed,0,,,4,2020-02-04T17:18:31Z,2020-05-06T01:50:29Z,2020-03-28T20:58:15Z,MEMBER,,,,"#### MCVE Code Sample

Add arbitrary change to the file `doc/pandas.rst`

``` bash
git add doc/pandas.rst
git commit -m ""test""
```

The pre-commit hook will fail.

#### Expected Output
the pre-commit hook to pass

#### Problem Description

running `isort -rc doc/*` will change the following files:
``` bash
        modified:   contributing.rst
        modified:   howdoi.rst
        modified:   internals.rst
        modified:   io.rst
        modified:   pandas.rst
        modified:   quick-overview.rst
```
unfortunately it does not behave properly and deletes/ changes arbitrary lines. Can the pre-commit hook be told to only run on *.py files? On the command line this would be `isort -rc *.py`












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559852545,MDExOlB1bGxSZXF1ZXN0MzcwOTQ3MjE4,3749,remove seaborn.apionly compatibility,10194086,closed,0,,,2,2020-02-04T16:58:33Z,2020-02-14T10:53:35Z,2020-02-05T16:03:52Z,MEMBER,,0,pydata/xarray/pulls/3749,"
 - [x] Closes #3747
 - [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/3749/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
559794979,MDU6SXNzdWU1NTk3OTQ5Nzk=,3747,The seaborn.apionly entry-point has been removed.,10194086,closed,0,,,2,2020-02-04T15:28:57Z,2020-02-05T16:03:52Z,2020-02-05T16:03:52Z,MEMBER,,,,"Seaborn [recently dropped](https://github.com/mwaskom/seaborn/releases) the `apionly` entry point (in version 0.10.0).

There is a dedicated `import_seaborn` function 
https://github.com/pydata/xarray/blob/47a6fc0c9b796997996d79d32358585d08021b9c/xarray/plot/utils.py#L24

but it is not used in one place

https://github.com/pydata/xarray/blob/47a6fc0c9b796997996d79d32358585d08021b9c/xarray/plot/utils.py#L146

which now causes test failures

https://dev.azure.com/xarray/xarray/_build/results?buildId=2111&view=ms.vss-test-web.build-test-results-tab&runId=29632&paneView=debug&resultId=108176

Todo: double check if the supported versions of seaborn still require this workaround.
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