html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/pull/868#issuecomment-233895323,https://api.github.com/repos/pydata/xarray/issues/868,233895323,MDEyOklzc3VlQ29tbWVudDIzMzg5NTMyMw==,10050469,2016-07-20T09:11:36Z,2016-07-20T09:11:36Z,MEMBER,"@shoyer yes, this was my original idea too: `contour` plots usually don't need a colorbar. I changed the default to false for `contour` plots only, and removed the convoluted logic for when the user gives only one level: this is a matplotlib problem after all, and if the user sets `levels=1` and `add_colorbar=True` it really isn't xarray's problem anymore.

I think it's better now, let me know what you think.
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