Hi All,

I'm pleased to announce the NumPy 1.13.0rc2 release. This release supports
Python 2.7 and 3.4-3.6 and contains many new features. It is one of the
most ambitious releases in the last several years. Some of the highlights
and new functions are

*Highlights*

   - Operations like ``a + b + c`` will reuse temporaries on some
   platforms, resulting in less memory use and faster execution.
   - Inplace operations check if inputs overlap outputs and create
   temporaries to avoid problems.
   - New __array_ufunc__ attribute provides improved ability for classes to
   override default ufunc behavior.
   - New np.block function for creating blocked arrays.


*New functions*

   - New ``np.positive`` ufunc.
   - New ``np.divmod`` ufunc provides more efficient divmod.
   - New ``np.isnat`` ufunc tests for NaT special values.
   - New ``np.heaviside`` ufunc computes the Heaviside function.
   - New ``np.isin`` function, improves on ``in1d``.
   - New ``np.block`` function for creating blocked arrays.
   - New ``PyArray_MapIterArrayCopyIfOverlap`` added to NumPy C-API.

Wheels for the pre-release are available on PyPI. Source tarballs,
zipfiles, release notes, and the changelog are available on github
<https://github.com/numpy/numpy/releases/tag/v1.13.0rc2>.

A total of 102 people contributed to this release.  People with a "+" by
their
names contributed a patch for the first time.

   - A. Jesse Jiryu Davis +
   - Alessandro Pietro Bardelli +
   - Alex Rothberg +
   - Alexander Shadchin
   - Allan Haldane
   - Andres Guzman-Ballen +
   - Antoine Pitrou
   - Antony Lee
   - B R S Recht +
   - Baurzhan Muftakhidinov +
   - Ben Rowland
   - Benda Xu +
   - Blake Griffith
   - Bradley Wogsland +
   - Brandon Carter +
   - CJ Carey
   - Charles Harris
   - Christoph Gohlke
   - Danny Hermes +
   - David Hagen +
   - David Nicholson +
   - Duke Vijitbenjaronk +
   - Egor Klenin +
   - Elliott Forney +
   - Elliott M Forney +
   - Endolith
   - Eric Wieser
   - Erik M. Bray
   - Eugene +
   - Evan Limanto +
   - Felix Berkenkamp +
   - François Bissey +
   - Frederic Bastien
   - Greg Young
   - Gregory R. Lee
   - Importance of Being Ernest +
   - Jaime Fernandez
   - Jakub Wilk +
   - James Cowgill +
   - James Sanders
   - Jean Utke +
   - Jesse Thoren +
   - Jim Crist +
   - Joerg Behrmann +
   - John Kirkham
   - Jonathan Helmus
   - Jonathan L Long
   - Jonathan Tammo Siebert +
   - Joseph Fox-Rabinovitz
   - Joshua Loyal +
   - Juan Nunez-Iglesias +
   - Julian Taylor
   - Kirill Balunov +
   - Likhith Chitneni +
   - Loïc Estève
   - Mads Ohm Larsen
   - Marein Könings +
   - Marten van Kerkwijk
   - Martin Thoma
   - Martino Sorbaro +
   - Marvin Schmidt +
   - Matthew Brett
   - Matthias Bussonnier +
   - Matthias C. M. Troffaes +
   - Matti Picus
   - Michael Seifert
   - Mikhail Pak +
   - Mortada Mehyar
   - Nathaniel J. Smith
   - Nick Papior
   - Oscar Villellas +
   - Pauli Virtanen
   - Pavel Potocek
   - Pete Peeradej Tanruangporn +
   - Philipp A +
   - Ralf Gommers
   - Robert Kern
   - Roland Kaufmann +
   - Ronan Lamy
   - Sami Salonen +
   - Sanchez Gonzalez Alvaro
   - Sebastian Berg
   - Shota Kawabuchi
   - Simon Gibbons
   - Stefan Otte
   - Stefan Peterson +
   - Stephan Hoyer
   - Søren Fuglede Jørgensen +
   - Takuya Akiba
   - Tom Boyd +
   - Ville Skyttä +
   - Warren Weckesser
   - Wendell Smith
   - Yu Feng
   - Zixu Zhao +
   - Zè Vinícius +
   - aha66 +
   - drabach +
   - drlvk +
   - jsh9 +
   - solarjoe +
   - zengi +

Cheers,

Chuck
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