debian/NEWS: update entry for NEWS from package in Experimental

debian/NEWS

+mumble (1.3.0~2868~g44b9004+dfsg-1) experimental; urgency=medium
+
+    This is the first version of Mumble in Debian that is built with Qt5
+    and thus has SSL support for ciphers that support PFS (Perfect Forward
+    Secrecy).  The package has been tested to insure that the basic
+    functionality of the client, server, and overlay all function.
+
+    There are currently unreleasable files in the upstream tarball that are
+    part of Git submodules (draft IETF documents for codecs that have a
+    restrictive license) so the normal PGP check against the upstream tarball
+    will not succeed and thus the PGP key has been removed and the uscan check
+    disabled for now.
+
+ -- Christopher Knadle <Chris.Knadle@coredump.us>  Wed, 20 Sep 2018 02:55:52 +0000
+
 mumble (1.2.19-1) unstable; urgency=medium
 
     Qt 4 is to be removed from the Debian archive before the release of