ER:  HDFStore raising an invalid ``TypeError`` rather than ValueError when appending with
     different block ordering (GH4096) related
Merge pull request #4355 from jreback/hdf_order

ER:  HDFStore raising an invalid TypeError rather than ValueError when appending with a diff block ordering (GH4096)
ENH: allow layout for grouped DataFrame histograms

Also remove the slow decorator for tests that take < 100 ms time