[gxml] Updated NEWS for 0.16.3 release

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 0ec207ec54477c57b5325cc324b87f884ca4a73a
Author: Daniel Espinosa <esodan gmail com>
Date:   Mon Mar 5 08:58:32 2018 -0600

    Updated NEWS for 0.16.3 release

 NEWS | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
---
diff --git a/NEWS b/NEWS
index 9faacf2..ec9d453 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,18 @@
+===============
+Version 0.16.3
+===============
+* Fix GDocument namespaces by Chris Lee <clee mg8 org>
+* Fix Issue #2: Adding gxml.deps.in in distribution tar
+* Autotools: Updated address for issues to GNOME's GitLab instance
+* README: Updated for Autotools, Meson and documentation
+* Updated translations:
+    Brazilian Portuguese by     Rafael Fontenelle <rafaelff gnome org>
+    Indonesian by               Kukuh Syafaat <syafaatkukuh gmail com>
+    Swedish by                  Anders Jonsson <anders jonsson norsjovallen se>
+    Spanish  by                 Daniel Mustieles <daniel mustieles gmail com>
+    German by                   Tim Sabsch <tim sabsch com>
+    Hungarian by                Balázs Úr <balazs urbalazs hu>
+
 ===============
 Version 0.16.2
 ===============