Update changelog and authors for v2.0.0 Applejack

This will be rc1

BUG=aomedia:2545

Change-Id: I1d9fd8570b1e7d05d0017016249a032ae58fbab1
diff --git a/.mailmap b/.mailmap
index a78a57c..30fae4d 100644
--- a/.mailmap
+++ b/.mailmap
@@ -3,16 +3,34 @@
 Aℓex Converse <aconverse@google.com> <alex.converse@gmail.com>
 Alexis Ballier <aballier@gentoo.org> <alexis.ballier@gmail.com>
 Alpha Lam <hclam@google.com> <hclam@chromium.org>
+Andrey Norkin <anorkin@netflix.com>
+Angie Chiang <angiebird@google.com>
 Arild Fuldseth <arilfuld@cisco.com> <arild.fuldseth@gmail.com>
 Arild Fuldseth <arilfuld@cisco.com> <arilfuld@cisco.com>
+Bohan Li <bohanli@google.com>
+Changjun Yang <changjun.yang@intel.com>
+Chi Yo Tsai <chiyotsai@google.com>
 Chi Yo Tsai <chiyotsai@google.com> <chiyotsai@dhcp-100-106-128-213.corp.google.com>
+Chm <chm@rock-chips.com>
+Damon Shen <yjshen@google.com>
 Daniele Castagna <dcastagna@chromium.org> <dcastagna@google.com>
 Deb Mukherjee <debargha@google.com>
+Elliott Karpilovsky <elliottk@google.com>
+Emil Keyder <emilkeyder@google.com>
 Erik Niemeyer <erik.a.niemeyer@intel.com> <erik.a.niemeyer@gmail.com>
-Guillaume Martres <gmartres@google.com> <smarter3@gmail.com>
+Frederic Barbier <frederic.barbier@allegrodvt.com> <fbarbier.contact@gmail.com>
+Fyodor Kyslov <kyslov@google.com>
+Grant Hsu <grant.hsu@cidana.com> <grant.hsu@gmail.com>
+Guillaume Martres <smarter@ubuntu.com>
+Guillaume Martres <smarter@ubuntu.com> <gmartres@google.com>
+Guillaume Martres <smarter@ubuntu.com> <smarter3@gmail.com>
+Guillaume Martres <smarter@ubuntu.com> <gmartres@mozilla.com>
 Hangyu Kuang <hkuang@google.com>
 Hui Su <huisu@google.com>
+Iole Moccagatta <iole.moccagatta@gmail.com>
 Jacky Chen <jackychen@google.com>
+James Zern <jzern@google.com> <jzern@google.cOm>
+Jean-Marc Valin <jmvalin@jmvalin.ca> <jmvalin@mozilla.com>
 Jim Bankoski <jimbankoski@google.com>
 Johann Koenig <johannkoenig@google.com>
 Johann Koenig <johannkoenig@google.com> <johann.koenig@duck.com>
@@ -20,26 +38,54 @@
 Johann Koenig <johannkoenig@google.com> <johannkoenig@chromium.org>
 John Koleszar <jkoleszar@google.com>
 Joshua Litt <joshualitt@google.com> <joshualitt@chromium.org>
+Lokeshwar Reddy B <lokeshwar.reddy@ittiam.com>
+Logan Goldberg <logangw@google.com>
+Luc Trudeau <luc@trud.ca>
+Luc Trudeau <luc@trud.ca> <ltrudeau@mozilla.com>
 Marco Paniconi <marpan@google.com>
 Marco Paniconi <marpan@google.com> <marpan@chromium.org>
+Michael Bebenita <mbebenita@gmail.com> <mbebenita@mozilla.com>
 Michael Horowitz <mhoro@webrtc.org> <mhoro@google.com>
+Mingliang Chen <mlchen@google.com>
+Monty Montgomery <cmontgomery@mozilla.com>
+Nathan E. Egge <negge@mozilla.com>
 Nathan E. Egge <negge@mozilla.com> <negge@dgql.org>
 Pascal Massimino <pascal.massimino@gmail.com>
+Pascal Massimino <pascal.massimino@gmail.com> <skal@google.com>
 Paul Wilkins <paulwilkins@google.com>
+Peng Bin <binpengsmail@gmail.com>
+Peng Bin <binpengsmail@gmail.com> <pengbin@kingsoft.com>
+Peter de Rivaz <peter.derivaz@gmail.com> <peter.derivaz@argondesign.com>
 Ralph Giles <giles@xiph.org> <giles@entropywave.com>
 Ralph Giles <giles@xiph.org> <giles@mozilla.com>
+Remya Prakasan <remya.prakasan@ittiam.com>
+Roger Zhou <youzhou@microsoft.com>
 Ronald S. Bultje <rsbultje@gmail.com> <rbultje@google.com>
+Ryan Lei <ryan.z.lei@intel.com>
+Ryan Lei <ryan.z.lei@intel.com> <ryan.lei@intel.com>
+Ryan Lei <ryan.z.lei@intel.com> <zlei3@ZLEI3-DESK.amr.corp.intel.com>
+Sachin Kumar Garg <sachin.kumargarg@ittiam.com>
+Sai Deng <sdeng@google.com>
 Sami Pietilä <samipietila@google.com>
 Sarah Parker <sarahparker@google.com>
 Tamar Levy <tamar.levy@intel.com>
 Tamar Levy <tamar.levy@intel.com> <levytamar82@gmail.com>
 Tero Rintaluoma <teror@google.com> <tero.rintaluoma@on2.com>
 Thomas Davies Thomas <thdavies@cisco.com>
+Timothy B. Terriberry <tterribe@xiph.org>
+Timothy B. Terriberry <tterribe@xiph.org> <tterriberry@mozilla.com>
 Timothy B. Terriberry <tterribe@xiph.org> Tim Terriberry <tterriberry@mozilla.com>
 Tom Finegan <tomfinegan@google.com>
 Tom Finegan <tomfinegan@google.com> <tomfinegan@chromium.org>
-Wei-ting Lin <weitinglin@google.com> <weitingco@gmail.com>
+Tristan Matthews <tmatth@videolan.org> <le.businessman@gmail.com>
+Venkat Sanampudi <sanampudi.venkatarao@ittiam.com>
+Wei-Ting Lin <weitinglin@google.com>
+Wei-Ting Lin <weitinglin@google.com> <weitingco@gmail.com>
+Wenyao Liu <wenyao.liu@cidana.com>
 Yaowu Xu <yaowu@google.com> <adam@xuyaowu.com>
 Yaowu Xu <yaowu@google.com> <yaowu@xuyaowu.com>
 Yaowu Xu <yaowu@google.com> <yaowu@yaowu-macbookpro.roam.corp.google.com>
 Yaowu Xu <yaowu@google.com> <Yaowu Xu>
+Yaowu Xu <yaowu@google.com> <yaowu.google.com>
+Zhipin Deng <zhipin.deng@intel.com>
+Zoe Liu <zoeliu@gmail.com> <zoeliu@google.com>