[gnome-shell-extensions] Bump version to 3.15.4

[Florian Müllner <fmuellner src gnome org>]

commit cecf8b9e404ef91fc1223c6749cedd3e50465159
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jan 21 15:23:09 2015 +0100

    Bump version to 3.15.4
    
    To go along GNOME Shell 3.15.4.

 NEWS         |    5 +++++
 configure.ac |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 933248a..f0e20aa 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+3.15.4
+======
+* window-list: Improve interaction with system modal dialogs
+* updated translations (cs, de, es, eu, fur, hu, id, nb, pt_BR, ru, sl, vi)
+
 3.15.3.1
 ========
 * adjust to gnome-shell change
diff --git a/configure.ac b/configure.ac
index a1c37aa..524f5bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ(2.63)
-AC_INIT([gnome-shell-extensions],[3.15.3.1],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell&component=extensions])
+AC_INIT([gnome-shell-extensions],[3.15.4],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell&component=extensions])
 
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([config])