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DOC: Updated release and whatsnew for 0.23.0 [ci skip] (#21051)
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‎doc/source/release.rst‎

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* Binary installers on PyPI: https://pypi.org/project/pandas
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* Documentation: http://pandas.pydata.org
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pandas 0.23.0
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-------------
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**Release date**: May 15, 2017
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This is a major release from 0.23.0 and includes a number of API changes, new
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features, enhancements, and performance improvements along with a large number
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of bug fixes. We recommend that all users upgrade to this version.
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Highlights include:
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- :ref:`Round-trippable JSON format with 'table' orient <whatsnew_0230.enhancements.round-trippable_json>`.
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- :ref:`Instantiation from dicts respects order for Python 3.6+ <whatsnew_0230.api_breaking.dict_insertion_order>`.
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- :ref:`Dependent column arguments for assign <whatsnew_0230.enhancements.assign_dependent>`.
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- :ref:`Merging / sorting on a combination of columns and index levels <whatsnew_0230.enhancements.merge_on_columns_and_levels>`.
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- :ref:`Extending Pandas with custom types <whatsnew_023.enhancements.extension>`.
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- :ref:`Excluding unobserved categories from groupby <whatsnew_0230.enhancements.categorical_grouping>`.
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See the :ref:`full whatsnew <whatsnew_0230>` for a list of all the changes.
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Thanks
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~~~~~~
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A total of 328 people contributed to this release. People with a "+" by their
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names contributed a patch for the first time.
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* Aaron Critchley
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* AbdealiJK +
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* Adam Hooper +
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* Albert Villanova del Moral
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* Alejandro Giacometti +
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* Alejandro Hohmann +
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* Alex Rychyk
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* Alexander Buchkovsky
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* Alexander Lenail +
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* Alexander Michael Schade
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* Aly Sivji +
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* Andreas Költringer +
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* Andrew
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* Andrew Bui +
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* András Novoszáth +
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* Andy Craze +
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* Andy R. Terrel
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* Anh Le +
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* Anil Kumar Pallekonda +
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* Antoine Pitrou +
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* Antonio Linde +
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* Antonio Molina +
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* Antonio Quinonez +
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* Armin Varshokar +
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* Artem Bogachev +
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* Avi Sen +
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* Azeez Oluwafemi +
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* Ben Auffarth +
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* Bernhard Thiel +
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* Bhavesh Poddar +
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* BielStela +
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* Blair +
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* Bob Haffner
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* Brett Naul +
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* Brock Mendel
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* Bryce Guinta +
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* Carlos Eduardo Moreira dos Santos +
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* Carlos García Márquez +
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* Carol Willing
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* Cheuk Ting Ho +
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* Chitrank Dixit +
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* Chris
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* Chris Burr +
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* Chris Catalfo +
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* Chris Mazzullo
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* Christian Chwala +
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* Cihan Ceyhan +
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* Clemens Brunner
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* Colin +
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* Cornelius Riemenschneider
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* Crystal Gong +
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* DaanVanHauwermeiren
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* Dan Dixey +
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* Daniel Frank +
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* Daniel Garrido +
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* Daniel Sakuma +
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* DataOmbudsman +
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* Dave Hirschfeld
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* Dave Lewis +
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* David Adrián Cañones Castellano +
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* David Arcos +
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* David C Hall +
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* David Fischer
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* David Hoese +
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* David Lutz +
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* David Polo +
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* David Stansby
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* Dennis Kamau +
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* Dillon Niederhut
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* Dimitri +
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* Dr. Irv
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* Dror Atariah
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* Eric Chea +
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* Eric Kisslinger
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* Eric O. LEBIGOT (EOL) +
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* FAN-GOD +
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* Fabian Retkowski +
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* Fer Sar +
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* Gabriel de Maeztu +
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* Gianpaolo Macario +
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* Giftlin Rajaiah
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* Gilberto Olimpio +
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* Gina +
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* Gjelt +
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* Graham Inggs +
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* Grant Roch
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* Grant Smith +
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* Grzegorz Konefał +
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* Guilherme Beltramini
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* HagaiHargil +
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* Hamish Pitkeathly +
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* Hammad Mashkoor +
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* Hannah Ferchland +
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* Hans
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* Haochen Wu +
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* Hissashi Rocha +
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* Iain Barr +
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* Ibrahim Sharaf ElDen +
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* Ignasi Fosch +
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* Igor Conrado Alves de Lima +
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* Igor Shelvinskyi +
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* Imanflow +
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* Ingolf Becker
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* Israel Saeta Pérez
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* Iva Koevska +
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* Jakub Nowacki +
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* Jan F-F +
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* Jan Koch +
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* Jan Werkmann
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* Janelle Zoutkamp +
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* Jason Bandlow +
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* Jaume Bonet +
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* Jay Alammar +
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* Jeff Reback
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* JennaVergeynst
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* Jimmy Woo +
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* Jing Qiang Goh +
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* Joachim Wagner +
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* Joan Martin Miralles +
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* Joel Nothman
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* Joeun Park +
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* John Cant +
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* Johnny Metz +
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* Jon Mease
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* Jonas Schulze +
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* Jongwony +
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* Jordi Contestí +
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* Joris Van den Bossche
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* José F. R. Fonseca +
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* Jovixe +
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* Julio Martinez +
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* Jörg Döpfert
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* KOBAYASHI Ittoku +
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* Kate Surta +
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* Kenneth +
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* Kevin Kuhl
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* Kevin Sheppard
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* Krzysztof Chomski
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* Ksenia +
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* Ksenia Bobrova +
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* Kunal Gosar +
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* Kurtis Kerstein +
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* Kyle Barron +
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* Laksh Arora +
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* Laurens Geffert +
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* Leif Walsh
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* Liam Marshall +
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* Liam3851 +
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* Licht Takeuchi
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* Liudmila +
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* Ludovico Russo +
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* Mabel Villalba +
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* Manan Pal Singh +
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* Manraj Singh
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* Marc +
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* Marc Garcia
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* Marco Hemken +
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* Maria del Mar Bibiloni +
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* Mario Corchero +
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* Mark Woodbridge +
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* Martin Journois +
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* Mason Gallo +
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* Matias Heikkilä +
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* Matt Braymer-Hayes
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* Matt Kirk +
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* Matt Maybeno +
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* Matthew Kirk +
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* Matthew Rocklin +
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* Matthew Roeschke
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* Matthias Bussonnier +
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* Max Mikhaylov +
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* Maxim Veksler +
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* Maximilian Roos
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* Maximiliano Greco +
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* Michael Penkov
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* Michael Röttger +
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* Michael Selik +
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* Michael Waskom
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* Mie~~~
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* Mike Kutzma +
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* Ming Li +
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* Mitar +
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* Mitch Negus +
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* Montana Low +
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* Moritz Münst +
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* Mortada Mehyar
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* Myles Braithwaite +
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* Nate Yoder
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* Nicholas Ursa +
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* Nick Chmura
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* Nikos Karagiannakis +
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* Nipun Sadvilkar +
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* Nis Martensen +
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* Noah +
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* Noémi Éltető +
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* Olivier Bilodeau +
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* Ondrej Kokes +
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* Onno Eberhard +
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* Paul Ganssle +
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* Paul Mannino +
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* Paul Reidy
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* Paulo Roberto de Oliveira Castro +
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* Pepe Flores +
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* Peter Hoffmann
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* Phil Ngo +
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* Pietro Battiston
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* Pranav Suri +
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* Priyanka Ojha +
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* Pulkit Maloo +
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* README Bot +
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* Ray Bell +
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* Riccardo Magliocchetti +
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* Ridhwan Luthra +
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* Robert Meyer
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* Robin
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* Robin Kiplang'at +
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* Rohan Pandit +
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* Rok Mihevc +
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* Rouz Azari
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* Ryszard T. Kaleta +
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* Sam Cohan
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* Sam Foo
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* Samir Musali +
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* Samuel Sinayoko +
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* Sangwoong Yoon
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* SarahJessica +
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* Sharad Vijalapuram +
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* Shubham Chaudhary +
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* SiYoungOh +
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* Sietse Brouwer
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* Simone Basso +
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* Stefania Delprete +
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* Stefano Cianciulli +
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* Stephen Childs +
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* StephenVoland +
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* Stijn Van Hoey +
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* Sven
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* Talitha Pumar +
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* Tarbo Fukazawa +
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* Ted Petrou +
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* Thomas A Caswell
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* Tim Hoffmann +
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* Tim Swast
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* Tom Augspurger
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* Tommy +
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* Tulio Casagrande +
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* Tushar Gupta +
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* Tushar Mittal +
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* Upkar Lidder +
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* Victor Villas +
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* Vince W +
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* Vinícius Figueiredo +
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* Vipin Kumar +
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* WBare
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* Wenhuan +
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* Wes Turner
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* William Ayd
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* Wilson Lin +
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* Xbar
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* Yaroslav Halchenko
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* Yee Mey
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* Yeongseon Choe +
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* Yian +
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* Yimeng Zhang
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* ZhuBaohe +
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* Zihao Zhao +
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* adatasetaday +
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* akielbowicz +
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* akosel +
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* alinde1 +
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* amuta +
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* bolkedebruin
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* cbertinato
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* cgohlke
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* charlie0389 +
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* chris-b1
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* csfarkas +
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* dajcs +
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* deflatSOCO +
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* derestle-htwg
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* discort
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* dmanikowski-reef +
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* donK23 +
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* elrubio +
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* fivemok +
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* fjetter +
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* froessler +
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* gabrielclow
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* gfyoung
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* juan huguet +
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pandas 0.22.0
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-------------
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‎doc/source/whatsnew/v0.23.0.txt‎

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.. _whatsnew_0230:
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3-
v0.23.0
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-------
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v0.23.0 (May 15, 2017)
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----------------------
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This is a major release from 0.22.0 and includes a number of API changes,
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deprecations, new features, enhancements, and performance improvements along
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In v.0.23 `join` will default to None (meaning no alignment), but this default will change to ``'left'`` in a future version of pandas.
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.. ipython:: python
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:okwarning:
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s = pd.Series(['a', 'b', 'c', 'd'])
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t = pd.Series(['b', 'd', 'e', 'c'], index=[1, 3, 4, 2])
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with a ``MultiIndex`` on a ``DataFrame`` via the :meth:`~Panel.to_frame` or with the `xarray package <http://xarray.pydata.org/en/stable/>`__. Pandas
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provides a :meth:`~Panel.to_xarray` method to automate this conversion. For more details see :ref:`Deprecate Panel <dsintro.deprecate_panel>` documentation. (:issue:`13563`, :issue:`18324`).
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.. ipython:: python
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:suppress:
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import pandas.util.testing as tm
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.. ipython:: python
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:okwarning:
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