Merge pull request #7022 from jreback/sqlalchemy

BLD: use sqlalchemy 0.7.1 in 2.6 build (GH6340)
Merge pull request #7373 from sinhrks/resamplenat

BUG: resample raises ValueError when NaT is included
Merge pull request #7458 from sinhrks/intersection

BUG: DTI.intersection doesnt preserve tz
nanops pep8 fixes
ENH/API: offsets now accepts datetime64
PERF: addtl transform vbenches
Merge pull request #7452 from sinhrks/offsets_dt64

ENH/API: offsets funcs now accepts datetime64
WPI: fast tranform on DataFrame
BUG: Some offsets.apply cannot handle tz properly
FIX: Enable fixed width strings to be read from Stata 13 (117) files

Fixes a bug which prevented files containing fixed width string data from being read.  Stata 13 files also allow variable length strings, which are not supported in the current version, and an explicit exception regarding this type is now given.  Added tests which cover these cases, and Stata 13 format files. fixes #7360
FIX: Stata writer no longer ignores encoding when writing strings

The encoding was not used when writing strings. Fixes #7286
BUG: astype(float) in Index does the wrong thing
Merge pull request #7464 from cpcloud/float64index-bad-construction

BUG: astype(float) in Index does the wrong thing
CLN: Simplify boxplot and modify its test
DOC: Add missing column header in 'baseball.csv'.
Merge pull request #7467 from helger/master

DOC: Add missing column header in 'baseball.csv'.
ENH: Cast ndarray-like datetime64 arrays to Index properly

It turns out that the ndarray-like arrays of dtype datetime64 were
not being properly cast to an Index, because -- due to a bug with
np.datetime64 -- calling np.asarray(x, dtype=object) if x is an
ndarray of type datetime64 results in an *integer* array.

This PR adds tests and a work around to pd.Index.__new__.

Related #5460
Merge pull request #7468 from shoyer/ndarray-like-to-index

ENH: Cast ndarray-like datetime64 arrays to Index properly
Merge pull request #7450 from bashtage/stata-13-strings

FIX: Enable fixed width strings to be read from Stata 13 (117) files
Merge pull request #7463 from jreback/merge_transform

PERF: performance gains in DataFrame groupby.transform for ufuncs (GH7383)