ENH: raise on fillna passed a list or tuple
BUG: (GH3593) fixed a bug in the incorrect conversion of datetime64[ns] in combine_first
Merge pull request #3595 from jreback/combine_first_timestamp

BUG: (GH3593) fixed a bug in the incorrect conversion of datetime64[ns]  in combine_first
Merge pull request #3585 from cpcloud/fillna-raise-on-value-is-list-3435

raise on fillna passed a list or tuple
BUG: Fixed bug where a time-series was being selected in preference to an actual column name

    in a frame (GH3594_)
Merge pull request #3597 from jreback/table_bug

BUG: Fixed bug where a time-series was being selected in preference to an actual column name