RLS: first release candidate for v0.13
Merge pull request #5617 from changhiskhan/master

RLS: first release candidate for v0.13
CLN: Trim includes of absent files
Merge pull request #5624 from neirbowj/trim-manifest

CLN: Trim includes of absent files
TST: Always try to close file descriptors of tempfiles

TST: Close file descriptors in io/tests/pytables
Merge pull request #5626 from jtratner/always-close-tempfiles

TST: Always try to close file descriptors of tempfiles
BUG/TST: importing util.clipboard shouldnt print to stdout (nosetests)
Merge pull request #5627 from y-p/PR_no_noise_clipboard

BUG/TST: importing util.clipboard shouldnt print to stdout (nosetests)
Merge pull request #5600 from jreback/replace_api

BUG: replace with a scalar works like a list of to_replace for compat with 0.12 (GH5319)
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.