[gnome-panel] bump version to 3.22.0, update NEWS

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 672eb2a8ddaf9a4665320364caa021e3d2e6f463
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Oct 8 17:18:19 2016 +0300

    bump version to 3.22.0, update NEWS

 NEWS         |   15 +++++++++++++++
 configure.ac |    4 ++--
 2 files changed, 17 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index 2ef8e1f..c51bdca 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,18 @@
+Version 3.22.0
+==============
+- Out of process applets are no longer supported.
+- GObject introspection support is removed.
+- Fix user switching with GDM. (Alberts Muktupāvels; #769009)
+- Disable scaling support in GTK+.
+- Fix cropped pixbuf rendering during zoom animation (Yannick Gicquel; #771166)
+- Fake transparency has been replaced with real transparency.
+- New panel properties dialog - background settings has been replaced with
+  theme settings.
+- Updated translations:
+  Andika Triwidada (id), Daniel Mustieles (es), Dušan Kazik (sk),
+  Kjartan Maraas (nb), Piotr Drąg (pl), Tiago Santos (pt),
+  Wolfgang Stöggl (de).
+
 Version 3.20.0
 ==============
 - Added option to use dark theme variant.
diff --git a/configure.ac b/configure.ac
index 2670501..1927016 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl Define version info
 dnl **************************************************************************
 
 m4_define([gp_major_version], [3])
-m4_define([gp_minor_version], [20])
+m4_define([gp_minor_version], [22])
 m4_define([gp_micro_version], [0])
 m4_define([gp_version], [gp_major_version.gp_minor_version.gp_micro_version])
 
@@ -65,7 +65,7 @@ LT_LIB_M
 #   change to C+1:0:0
 # - If the interface is the same as the previous version, change to C:R+1:A
 
-LIB_PANEL_APPLET_LT_VERSION=1:0:1
+LIB_PANEL_APPLET_LT_VERSION=2:0:0
 AC_SUBST(LIB_PANEL_APPLET_LT_VERSION)
 
 AC_ARG_ENABLE([documentation],