[libsecret] Bump version number

[Stefan Walter <stefw src gnome org>]

commit ba2c57d842a1e40cc8e410e33c28b42ed5a4e3b6
Author: Stef Walter <stefw redhat com>
Date:   Tue Jan 19 09:24:39 2016 +0100

    Bump version number

 NEWS         |    5 +++++
 configure.ac |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 57fd41b..cd30e49 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+0.18.4
+ * Multithreading fixes [#756766]
+ * Fix memory leaks [#756766]
+ * Updated translations
+
 0.18.3
  * Updated translations
  * Documentation fixes
diff --git a/configure.ac b/configure.ac
index 3b7c6f1..5c26bc8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 AC_PREREQ(2.63)
 
-AC_INIT([libsecret],[0.18.3],
+AC_INIT([libsecret],[0.18.4],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=libsecret],
         [libsecret])