[notification-daemon] bump version to 3.18.1, update NEWS

[Alberts Muktupāvels <muktupavels src gnome org>]

commit f01f043ed6134864e6bb3accc64d15e0a9dc8dbe
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Oct 12 21:57:15 2015 +0300

    bump version to 3.18.1, update NEWS

 NEWS         |    6 ++++++
 configure.ac |    2 +-
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 2f0d1a5..9b4d731 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+Version 3.18.1
+==============
+- Fix empty body text with invalid pango markup.
+- Updated translations:
+  Tom Tryfonidis (el).
+
 Version 3.18.0
 ==============
 - Deprecation warning fixes. (Alberts Muktupāvels)
diff --git a/configure.ac b/configure.ac
index 0ac5754..03d4b0b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ dnl **************************************************************************
 
 m4_define([nd_major_version], [3])
 m4_define([nd_minor_version], [18])
-m4_define([nd_micro_version], [0])
+m4_define([nd_micro_version], [1])
 m4_define([nd_version], [nd_major_version.nd_minor_version.nd_micro_version])
 
 dnl **************************************************************************