[mutter/gnome-3-18] Bump version to 3.18.4

[Florian Müllner <fmuellner src gnome org>]

commit 3082504d1bcf2120a6d2b375eb58548687b27be0
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Apr 21 12:04:34 2016 +0200

    Bump version to 3.18.4
    
    Update NEWS.

 NEWS         |   11 +++++++++++
 configure.ac |    2 +-
 2 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 83311ec..2bf3900 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+3.18.4
+======
+* Fix mouse cursor disappearing in some multi-monitor setups [Rui; #763159]
+* Do not assert on non-fatal runtime errors [Florian; #765058]
+
+Contributors:
+  Rui Matos, Florian Müllner
+
+Translations:
+  Cédric Valmary [oc]
+
 3.18.3
 ======
 * Fix initialization of bypass compositor hint [Rui; #758544]
diff --git a/configure.ac b/configure.ac
index b3db9ae..ec14e1b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
 m4_define([mutter_minor_version], [18])
-m4_define([mutter_micro_version], [3])
+m4_define([mutter_micro_version], [4])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])