TST: more robust tests in HDFStore

TST: print output on exception
Merge pull request #3226 from jreback/hdf_test

TST: more robust tests in HDFStore
BUG: KDE plot fails with color kwarg #3187
TST add regression test for GH2753
Merge pull request #3227 from hayd/GH2753

TST add regression test for GH2753
DOC: update RELEASE.rst
ENH: Declare a BoolBlock as a NumericBlock
BUG: GH2641 fixes "df.decribe() with boolean column"

This change will make all numeric operations on boolean data work, by
just transparently treating them as integers values 1 and 0.  This is
not pandas specific behavior, this is the default operations of both
numpy and python.