id,node_id,number,state,locked,title,user,body,created_at,updated_at,closed_at,merged_at,merge_commit_sha,assignee,milestone,draft,head,base,author_association,auto_merge,repo,url,merged_by
17157222,MDExOlB1bGxSZXF1ZXN0MTcxNTcyMjI=,162,closed,0,Change np.isnan to pd.isnull in conventions.py to handle _FillValue = '',4194485,"At a number of spots in conventions.py, np.isnan was being used
to check possible fill values.  However, np.isnan is not implemented
for string types.  So, I've replaced np.isnan with pd.isnull.

Alas, I haven't been able to update the tests to cover _FillValue = '',
because doing so would involve significant changes throughout the
code base.
",2014-06-15T23:10:29Z,2014-06-15T23:16:48Z,2014-06-15T23:16:35Z,2014-06-15T23:16:35Z,17e4ec59af53f58c4f960b2795e059e67a00e9ed,,,0,57ebf7df62461abbd6b6f5d45a79dda38e6ba001,3ccf1a8931780f0a2554253675803df8f8ec6ebd,NONE,,13221727,https://github.com/pydata/xarray/pull/162,