[gnome-sudoku] Prepare 3.31.1

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 33f902996a55c9ffccd2a3e5ebf51aac0defc34a
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Wed Oct 10 08:51:47 2018 -0500

    Prepare 3.31.1

 NEWS        | 5 +++++
 meson.build | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index b396ea1..8edb9c3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+3.31.1 - October 10, 2018
+=========================
+
+* Removed the app menu (Robert Ancell)
+
 3.30.0 - September 2, 2018
 ==========================
 
diff --git a/meson.build b/meson.build
index 4635543..f45bc5d 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@ project('gnome-sudoku', ['c', 'cpp', 'vala'],
   ],
   license: 'GPL3+',
   meson_version: '>= 0.44.1',
-  version: '3.30.0'
+  version: '3.31.1'
 )
 
 add_project_arguments([