[ci skip]

'midpoint' must return the same as 'higher' and 'lower' when the two
are the same, not 'lower' + 0.5 as it was doing.

[ci skip]

* Drop testing of Python 2.6, 3.2, and 3.3
* Create 1.12.0-notes.rst and add to source/documentation.
* Update pavement.py to use 1.10.x as LOG_START
* Update version numpy in setup.py

Rewrite the documentation of added functionality of the deg parameter of
the polynomial fitting functions in the numpy.polynomial package and put
it in the 'New Features' section.

Only for 1d-ndarrays exactly, as subtypes (e.g. masked arrays) may not
allow direct shuffle of the underlying buffer (in fact, the old
implementation destroyed the underlying values of masked arrays while
shuffling).

Also handles struct-containing-object 1d ndarrays properly.

See #6776 for an earlier, less general (but even faster: ~6x)
improvement attempt, #5514 for the original issue.

API: Make datetime64 timezone naive