[gtkmm] 3.21.3

[Murray Cumming <murrayc src gnome org>]

commit 18db7c4bb4da88aeef4654fbd643ba1ad2f2b37b
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Jun 27 10:29:50 2016 +0200

    3.21.3

 NEWS         |   24 ++++++++++++++++++++++++
 configure.ac |    2 +-
 2 files changed, 25 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 1fdf5b2..35ef598 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,27 @@
+3.21.3 (unstable):
+
+Gtk:
+* AppChooserDialog, FontChooserDialog: Add _UNMANAGEABLE.
+  (Kjell Ahlstedt)
+* ScrolledWindow: Deprecate remove_with_viewport().
+  (Kjell Ahlstedt) Bug #685739
+* SizeGroup: Deprecate set/get/property_ignore_hidden().
+  (Kjell Ahlstedt)
+* Widget: Deprecate send_expose().
+  (Kjell Ahlstedt)
+* Window: Deprecate begin_paint_rect(), begin_paint_region(),
+  end_paint() and create_cairo_context(). Add begin_draw_frame() and
+  end_draw_frame() which use the new Gdk::DrawingContext.
+  (Kjell Ahlstedt)
+
+Gdk:
+* Add DrawingContext.
+  (Kjell Ahlstedt)
+
+Build:
+* Visual Studio builds: Update gdkmm project
+  (Chun-wei Fan)
+
 3.21.2 (unstable):
 
 Gdk:
diff --git a/configure.ac b/configure.ac
index 6288eb8..094cd83 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@
 ## You should have received a copy of the GNU Lesser General Public License
 ## along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-AC_INIT([gtkmm], [3.21.2],
+AC_INIT([gtkmm], [3.21.3],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=gtkmm],
         [gtkmm], [http://www.gtkmm.org/])
 AC_PREREQ([2.59])