appendix/version_history: Update changelog for 2.3 branch

source/chapters/appendix/version_history.rst

@@ -9,8 +9,8 @@
 Version History
 ===============
 
-2.3.1
------
+`2.3.1 <https://launchpad.net/mixxx/+milestone/2.3.1>`_ (Unreleased)
+------------------------------------------------------------------------
 
 
 * Added mapping for the Numark DJ2GO Touch controller `#4108 <https://github.com/mixxxdj/mixxx/pull/4108>`_
@@ -24,7 +24,11 @@ Version History
 * Fix relocation of directories with special/reserved characters in path name `#4146 <https://github.com/mixxxdj/mixxx/pull/4146>`_
 * Fix performance issue on AArch64 by enabling flush-to-zero for floating-point arithmetic `#4144 <https://github.com/mixxxdj/mixxx/pull/4144>`_
 * Fix custom key notation not restored correctly after restart `#4136 <https://github.com/mixxxdj/mixxx/pull/4136>`_
-  ### Packaging
+
+Packaging
+^^^^^^^^^
+
+
 * Install udev rule file to the correct location automatically in the CMake install step when CMAKE_INSTALL_PREFIX is ``/`` or ``/usr``. It is no longer necessary to manually copy the udev rule file in packaging scripts. `#4126 <https://github.com/mixxxdj/mixxx/pull/4126>`_
 * Fix various build issues on FreeBSD `#4122 <https://github.com/mixxxdj/mixxx/pull/4122>`_ `#4123 <https://github.com/mixxxdj/mixxx/pull/4123>`_ `#4124 <https://github.com/mixxxdj/mixxx/pull/4124>`_
 
@@ -391,7 +395,7 @@ each build. `lp:1751482 <https://bugs.launchpad.net/mixxx/+bug/1751482>`_
 ------------------------------------------------------------------------
 
 Fix a severe performance regression on Windows:
-https://mixxx.org/forums/viewtopic.php?f=3&t=12082
+`Mixxx 2.1.2 running much slower than 2.1.1 <https://mixxx.org/forums/viewtopic.php?f=3&t=12082>`_
 
 `2.1.2 <https://launchpad.net/mixxx/+milestone/2.1.2>`_ (2018-08-10)
 ------------------------------------------------------------------------
@@ -565,6 +569,33 @@ tips on getting started contributing code to Mixxx.
 
 We hope you have as much fun with Mixxx as we do!
 
+For a full list of new features and bugfixes, check out the
+`2.1.0 milestone on Launchpad <https://launchpad.net/mixxx/+milestone/2.1.0>`_.
+
+`2.0.0 <https://launchpad.net/mixxx/+milestone/2.0.0>`_ (2015-12-31)
+------------------------------------------------------------------------
+
+
+* 4 Decks with Master Sync
+* New Effects Framework with 4 Effect Units and 5 Built-in Effects:
+
+  * Flanger, Bit Crusher, Reverb, Echo, Filter
+  * More to come!
+
+* Configurable, Resizeable User Interface with 3 Brand New Skins
+* Cover Art Display
+* Music Key Detection and Shifting
+* Vinyl Audio Pass-Through
+* 4 Microphone inputs and 4 Auxiliary inputs
+* MIDI Mapping GUI and Improved Learning Wizard
+* MusicBrainz metadata fetching
+* RGB Musical Waveforms
+* Hundreds of Bug Fixes and Improvements
+* New Pitch-Independent Algorithm for Better-Sounding Key-lock
+
+For a full list of new features and bugfixes, check out the
+`2.0.0 milestone on Launchpad <https://launchpad.net/mixxx/+milestone/2.0.0>`_.
+
 
 .. seealso:: For an overview of previous versions, `take a look
              <https://launchpad.net/mixxx/+series>`_ at the timeline.