NumPy 1.16. 3 release

Hi All,

On behalf of the NumPy team I am pleased to announce the release of NumPy
1.16.3 which contains several fixes for newly reported bugs.  The Python
versions supported in this release are 2.7 and 3.5-3.7.  There are several
notable changes.

   - Unpickling object arrays when loading *.npy or *.npz files now
   requires an explicit opt-in. This backwards incompatible change was made
   in response to CVE-2019-6446
   <https://nvd.nist.gov/vuln/detail/CVE-2019-6446>.
   - The covariance in 'random.mvnormal' is cast to double. This should
   make the tolerance more useful when checking the singular values of the
   covariance matrix.
   - The '__array_interface__' offset now works as documented. The  offset
   value was being mistakenly ignored.

Downstream developers building this release should use Cython >= 0.29.2
and, if using OpenBLAS, OpenBLAS > v0.3.4.  Wheels for this release can be
downloaded from PyPI <https://pypi.org/project/numpy/1.16.3/>, source
archives and release notes are available from Github
<https://github.com/numpy/numpy/releases/tag/v1.16.3>.

If you are installing using pip, you may encounter a problem with older
installed versions of NumPy that pip did not delete becoming mixed with the
current version, resulting in an ``ImportError``. That problem is
particularly
common on Debian derived distributions due to a modified pip.  The fix is
to make sure all previous NumPy versions installed by pip have been
removed. See #12736 <https://github.com/numpy/numpy/issues/12736> for
discussion of the issue.

*Contributors*

A total of 16 people contributed to this release.  People with a "+" by
their
names contributed a patch for the first time.

   - Andreas Schwab
   - Bharat Raghunathan +
   - Bran +
   - Charles Harris
   - Eric Wieser
   - Jakub Wilk
   - Kevin Sheppard
   - Marten van Kerkwijk
   - Matti Picus
   - Paul Ivanov
   - Ralf Gommers
   - Sebastian Berg
   - Tyler Reddy
   - Warren Weckesser
   - Yu Feng
   - adeak +


*Pull requests merged*

A total of 26 pull requests were merged for this release.

   - gh-13072 : BUG: Fixes to numpy.distutils.Configuration.get_version
   (#13056)
   - gh-13082 : BUG: Fix errors in string formatting while producing an
   error
   - gh-13083 : BUG: Convert fortran flags in environment variable
   - gh-13084 : BUG: Remove error-prone borrowed reference handling
   - gh-13085 : BUG: Add error checks when converting integers to datetime
   types
   - gh-13091 : BUG: Remove our patched version of `distutils.split_quoted`
   - gh-13141 : BUG: Fix testsuite failures on ppc and riscv
   - gh-13142 : BUG: Fix parameter validity checks in ``random.choice``
   - gh-13143 : BUG: Ensure linspace works on object input.
   - gh-13144 : BLD: fix include list for sdist building.
   - gh-13145 : BUG: __array_interface__ offset was always ignored
   - gh-13274 : MAINT: f2py: Add a cast to avoid a compiler warning.
   - gh-13275 : BUG, MAINT: fix reference count error on invalid input to
   ndarray.flat
   - gh-13276 : ENH: Cast covariance to double in random mvnormal
   - gh-13278 : BUG: Fix null pointer dereference in
   PyArray_DTypeFromObjectHelper
   - gh-13339 : BUG: Use C call to sysctlbyname for AVX detection on MacOS.
   - gh-13340 : BUG: Fix crash when calling savetxt on a padded array
   - gh-13341 : BUG: ufunc.at iteration variable size fix
   - gh-13342 : DOC: Add as_ctypes_type to the documentation
   - gh-13350 : BUG: Return the coefficients array directly
   - gh-13351 : BUG/MAINT: Tidy typeinfo.h and .c
   - gh-13359 : BUG: Make allow_pickle=False the default for loading
   - gh-13360 : DOC: fix some doctest failures
   - gh-13363 : BUG/MAINT: Tidy typeinfo.h and .c
   - gh-13381 : BLD: address mingw-w64 issue. Follow-up to gh-9977
   - gh-13382 : REL: Prepare for the NumPy release.

Cheers,

Charles Harris

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