[network-manager-applet] release: update NEWS

[Lubomir Rintel <lkundrak src gnome org>]

commit d77bf090f769e4477cfd56b5b969fde5870cca83
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Tue Nov 7 18:45:03 2017 +0100

    release: update NEWS

 NEWS |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
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diff --git a/NEWS b/NEWS
index 3a31265..292c41d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,17 @@
 ======================================================
+network-manager-applet-1.8.6
+Overview of changes since network-manager-applet-1.8.4
+======================================================
+
+This is a new stable release of network-manager-applet.  Notable changes include:
+
+* Added an option to build with Meson build system.
+* Wi-Fi client connections now support setting a band and a channel too.
+* Setting IPv6 address generation mode is now supported.
+* Fixed a possible crash after editing Wi-Fi connections.
+* Updated Danish, Dutch and German translations.
+
+======================================================
 network-manager-applet-1.8.4
 Overview of changes since network-manager-applet-1.8.2
 ======================================================