ENH: pivot_table can now accept Grouper
Merge pull request #6913 from sinhrks/pivotg

ENH: pivot_table can now accept Grouper
Boxplot by quartile example code

Add mpl_style option as cookbook currently doesn't have plots
COMPAT: windows dtype fix in for Panel.count
Merge pull request #6981 from pydata/winfix

COMPAT: windows dtype fix in for Panel.count