BUG: core/generic/_update_inplace not resetting item_cache (GH5628)
Merge pull request #5631 from jreback/inplace_bug

BUG: core/generic/_update_inplace not resetting item_cache (GH5628)
BUG: make sure partial setting with a Series like works with a completly empty frame  (GH5632)
Merge pull request #5633 from jreback/setitem_empty

BUG: make sure partial setting with a Series like works with a completly empty frame (GH5632)
BUG: Validate levels in a multi-index before storing in a HDFStore (GH5527)
Merge pull request #5634 from jreback/hdf_mi

BUG: Validate levels in a multi-index before storing in a HDFStore (GH5527)
ENH: Add wide_to_long helper function.
ENH: Allow non-int j vals
DOC: Add wide_to_long to release notes.
CLN: expand groupby dispatch whitelist (GH5480)

- Create separate whitelists for SeriesGroupBy and DataFrameGroupBy objects
- Improve groupby whitelist testing
StataWriter: Replace non-isalnum characters in variable names by _ instead of integral represantation of replaced character. Eliminate duplicates created by replacement.
Merge pull request #5525 from PKEuS/master

StataWriter: Replace non-isalnum characters in variable names by _ inste...
BUG: mixed column selection with dups is buggy (GH5639)
Merge pull request #5640 from jreback/dups_bool

BUG: mixed column selection with dups is buggy (GH5639)
Revert "StataWriter: Replace non-isalnum characters in variable names by _ instead of integral represantation of replaced character. Eliminate duplicates created by replacement."

Fails under py2.6 / win32 because of unicode issues

This reverts commit c57363072acec8138381d033b9b7cb7fcfc575a9.
TST: prevent stderr from leaking to console in util.testing
Merge pull request #5644 from y-p/PR_popen_noise_on_error

TST: prevent stderr from leaking to console in util.testing
BLD: remove ISRELEASED tag from setup.py
BUG: repr_html, fix GH5588 for the MultiIndex case
VB: add vbench for truncated repr_html