ENH: plot functions accept multiple axes and layout kw
bug fix for 7987
BUG: Bug in Timestamp comparisons with == and dtype of int64 (GH8058)
Coerce None consistently, depending on the dtype of the container.

Fixes #7939.
Merge pull request #8070 from jreback/timestamp_equal

BUG: Bug in Timestamp comparisons with == and dtype of int64 (GH8058)
Merge pull request #7941 from ahlmss/set_item_to_none

API: Coerce None according to the dtype of the container
Merge pull request #7988 from MichaelWS/master

bug fix for 7987 and add day of week functionality to Holiday
Merge pull request #7736 from sinhrks/multi_ax

ENH: plot functions accept multiple axes and layout kw
BUG: rolling_count() and expanding_*() with zero-length args