[network-manager-applet] release: update NEWS

[Thomas Haller <thaller src gnome org>]

commit 05cb1d6967fa4e2a9646f24015ddfc77b12a234c
Author: Thomas Haller <thaller redhat com>
Date:   Fri Sep 7 12:30:21 2018 +0200

    release: update NEWS

 NEWS | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/NEWS b/NEWS
index 42a5ca2d..1150b9b4 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+=======================================================
+network-manager-applet-1.8.18
+Overview of changes since network-manager-applet-1.8.16
+=======================================================
+
+* libnma: fix wrongly showing hidden GUI elements, which
+  causes connection editing to behave wrong (issue#20).
+* libnma, c-e: fix translation issues in GUI due to missing
+  gettext domain (bgo#792285).
+* Update Croatian, German, Indonesian, Italian, Kazakh, and Turkish
+  translations.
+
 =======================================================
 network-manager-applet-1.8.16
 Overview of changes since network-manager-applet-1.8.14