[network-manager-applet] release: update NEWS

[Lubomir Rintel <lkundrak src gnome org>]

commit 5df3ec3b11933f52ee217a11ed2bcf455490a398
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Tue Aug 7 17:26:04 2018 +0200

    release: update NEWS

 NEWS | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/NEWS b/NEWS
index e02fab5e..42a5ca2d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,13 @@
+=======================================================
+network-manager-applet-1.8.16
+Overview of changes since network-manager-applet-1.8.14
+=======================================================
+
+* Fix various issues that causes GtkApplication to quit at the wrong time.
+* Read the Mobile Providers database from a build-time determined location.
+* Modernize Gtk+ 3.0 use in preparations for Gtk+ 4.0.
+* Update Brazilian Portuguese, Polish, Turkish, German translation.
+
 =======================================================
 network-manager-applet-1.8.14
 Overview of changes since network-manager-applet-1.8.12