[mutter] Bump version to 3.31.2

[Florian Müllner <fmuellner src gnome org>]

commit 9a12befd22bff7bfd3afb12f2a774b3bcdf771ba
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Nov 14 00:25:10 2018 +0100

    Bump version to 3.31.2
    
    Update NEWS.

 NEWS         | 17 +++++++++++++++++
 configure.ac |  4 ++--
 meson.build  |  2 +-
 3 files changed, 20 insertions(+), 3 deletions(-)
---
diff --git a/NEWS b/NEWS
index 437a39c3e..f1543a498 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,20 @@
+3.31.2
+======
+* Fix handling of non-UTF8 encodings [Florian; !227]
+* Fix memory leaks introduced in 3.30.1 [Jonas; #653]
+* Fix regression when overriding workspace layout [Ron; #270]
+* Fix crash when restarting window manager [Andrea; gnome-shell#595]
+* Add meson build support [Jonas; !167]
+* Freeze clock when headless [Jonas; !170]
+* Fix crash on monitor hotplug [Olivier; #189]
+* Misc. bug fixes [Jonas; #353, !132, #382]
+
+Contributors:
+  Jonas Ådahl, Andrea Azzarone, Olivier Fourdan, Niels De Graef,
+  Alexander Mikhaylenko, Florian Müllner, Akira Nakajima,
+  Georges Basile Stavracas Neto, Pekka Paalanen, Peter Uithoven,
+  Daniel van Vugt, Ron Yorston
+
 3.30.1
 ======
 * Improve trackball detection [Tony; #258]
diff --git a/configure.ac b/configure.ac
index fdfaf614b..fef188045 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [30])
-m4_define([mutter_micro_version], [1])
+m4_define([mutter_minor_version], [31])
+m4_define([mutter_micro_version], [2])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])
diff --git a/meson.build b/meson.build
index 0d0c467f8..0f4f0d04a 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('mutter', 'c',
-  version: '3.30.1',
+  version: '3.31.2',
   meson_version: '>= 0.46.0',
   license: 'GPLv2+'
 )