ENH: enhance apply() on Panel for arbitrary functions (rather than just ufuncs) (GH1148)
ENH: add property dtypes on Panel objects
ENH: allow multiple axes to be passed to axis on a Panel to process slabs
DOC: Panel.apply whatsnew docs

DOC: add Panel.appy to basics.rst
Merge pull request #5850 from jreback/panel_apply

ENH: enhancements to Panel.apply to enable arbitrary functions and multi-dim slicing (GH1148)