NEWS: update

Add 'machinectl shell' to NEWS and also update date and contributors
lists.

Author: David Herrmann

NEWS

@@ -2,24 +2,28 @@ systemd System and Service Manager
 
 CHANGES WITH 225:
 
-        * Mostly a bugfix release, with tree-wide cleanups
+        * machinectl gained a new verb 'shell' which opens a fresh shell on the
+          target machine. It is similar to 'login', but spawns the shell
+          directly. The pseudo machine '.host' now refers to the local host and
+          is used by default. Hence, 'machinectl shell' can be used as
+          replacement for 'su' which spawns the session as a fresh systemd
+          unit.
 
         * systemd-networkd learned to cope with private-zone DHCP options and
           allows other programs to query the values.
 
-        Contributions from: Alastair Hughes, Alex Crawford, Daniel Mack,
-        David Herrmann, Dimitri John Ledkov, Eric Kostrowski, Evgeny
-        Vereshchagin, Felipe Sateler, Jan Pokorný, Jan Synacek, Johnny
-        Robeson, Karel Zak, Kay Sievers, Kefeng Wang, Lennart
-        Poettering, Major Hayden, Marcel Holtmann, Markus Elfring,
-        Martin Mikkelsen, Matt Turner, Maxim Mikityanskiy, Michael
-        Biebl, Namhyung Kim, Nicolas Cornu, Owen W. Taylor, Patrik
-        Flykt, Peter Hutterer, reverendhomer, Richard Maw, Ronny
-        Chevalier, Seth Jennings, Stef Walter, Susant Sahani, Thomas
-        Blume, Thomas Hindoe Paaboel Andersen, Thomas Meyer, Tom
-        Gundersen, WaLyong Cho, Zbigniew Jędrzejewski-Szmek
-
-        -- Berlin, 2015-xx-xx
+        Contributions from: Alastair Hughes, Alex Crawford, Daniel Mack, David
+        Herrmann, Dimitri John Ledkov, Eric Kostrowski, Evgeny Vereshchagin,
+        Felipe Sateler, HATAYAMA Daisuke, Jan Pokorný, Jan Synacek, Johnny
+        Robeson, Karel Zak, Kay Sievers, Kefeng Wang, Lennart Poettering, Major
+        Hayden, Marcel Holtmann, Markus Elfring, Martin Mikkelsen, Martin Pitt,
+        Matt Turner, Maxim Mikityanskiy, Michael Biebl, Namhyung Kim, Nicolas
+        Cornu, Owen W. Taylor, Patrik Flykt, Peter Hutterer, reverendhomer,
+        Richard Maw, Ronny Chevalier, Seth Jennings, Stef Walter, Susant Sahani,
+        Thomas Blume, Thomas Hindoe Paaboel Andersen, Thomas Meyer, Tom
+        Gundersen, Vincent Batts, WaLyong Cho, Zbigniew Jędrzejewski-Szmek
+
+        -- Berlin, 2015-08-27
 
 CHANGES WITH 224: