Issue #5269: Fix unhelpful "length mismatch" error message on set_axis
TST/PERF: Re-write assert_almost_equal() in cython #4398

Add a testing.pyx cython file, and port assert_almost_equal() from
python to cython.

On my machine this brings a modest gain to the suite of "not slow" tests
(160s -> 140s), but on assert_almost_equal() heavy tests, like
test_expressions.py, it shows a large improvement (14s -> 4s).
TST: Fix edge cases in assert_almost_equal() + tests #4398

Many of the edge cases were related to ordering of the items, but in
some cases there were also issues with type checking.  This fixes both
of those issues and massively expands the testing for this function.
CLN: Make the name of the test file more accurate
DOC add get_dummies to reshaping.rst

examples shamelessly from Wes' book
Merge pull request #5219 from danbirken/c_assert_almost_equal_simple

TST/PERF: Re-write assert_almost_equal() in cython #4398
Merge pull request #5293 from hayd/get_dummies_docs

DOC add get_dummies to reshaping.rst
BLD: add 0.13.0 pickles support
Added handling for v3 advanced segment ids which aren't just ints

The old int based advanced segment ids are deprecated. The new segment
ids are alphanumeric. I know from experimentation that their form
includes alphanumeric and alphanumeric+hyphen. Updated code for both
cases.

Consolidated tests and fixed broken references

In consolidating my test file with the preexisting GA test file, I
found a broken dependency to reset_token_store. It looks like it was
renamed to reset_default_token_store so I updated this file to point to
that. Also added tests around formatting of segment ids to the GA query
to this file.

**CLN** Removed debugging code I added.
Merge pull request #5271 from jcbozonier/master

Added handling for v3 advanced segment ids which aren't just ints as of July 15th
ENH: Support for "52–53-week fiscal year" / "4–4–5 calendar" and
LastWeekOfMonth DateOffset.
- Added ``LastWeekOfMonth`` DateOffset
- Added ``FY5253 and ``FY5253Quarter`` DateOffsets
DOC: Remove iloc example.
Merge pull request #5296 from TomAugspurger/iloc-docs

DOC: Remove iloc example.
BLD: 2.7 64-bit AMD, 2.7, 3.3 linux-64 0.13.0 pickles

BLD: 2.6 32-bit 0.13.0 pickles

BLD: 2.7.3 32-bit 0.13.0 pickles

BLD: 3.2 32-bit 0.13.0 pickles

BLD: mac pickle, thanks @TomAugspurger
Merge pull request #5004 from cancan101/retail

ENH: Support for "52–53-week fiscal year" / "4–4–5 calendar" and LastWeekOfMonth DateOffset
Merge pull request #5295 from jreback/0_13_pickles

BLD: 0 13 pickles
Merge branch 'master' of https://github.com/akloster/pandas into akloster-master
BUG: fix typo from b8aa22aa9915710f3120c60e5d4a187844aeb0fe
BUG: setting on a frame without an index silenty was failing, related (GH5226)
Merge pull request #5301 from jreback/partial_setting_bug

BUG: setting on a frame without an index silently was failing, related (GH5226)