[hitori] Release version 3.31.0

[Philip Withnall <pwithnall src gnome org>]

commit 5d830072accd20e5a933585994885117c424fba9
Author: Philip Withnall <withnall endlessm com>
Date:   Tue Feb 19 16:26:59 2019 +0000

    Release version 3.31.0
    
    Signed-off-by: Philip Withnall <withnall endlessm com>

 NEWS                                 | 34 ++++++++++++++++++++++++++++++++++
 data/org.gnome.Hitori.appdata.xml.in |  1 +
 meson.build                          |  2 +-
 3 files changed, 36 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index f87ad39..4b0be57 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,37 @@
+Overview of changes in Hitori 3.31.0
+====================================
+
+* Migrated to Meson. (#10)
+
+* Bugs fixed:
+ - #9 Retire app menu
+ - #10 Migrate to Meson
+ - !4 Use G_DECLARE_FINAL_TYPE() to declare type
+ - !8 snap: Add snap build configuration
+ - !10 docs: Port README to Markdown
+ - !11 docs: Reformat NEWS to be valid Markdown
+
+* Translation updates:
+ - Catalan
+ - Chinese (Taiwan)
+ - Croatian
+ - Czech
+ - Danish
+ - Finnish
+ - French
+ - Friulian
+ - Galician
+ - Greek, Modern (1453-)
+ - Hungarian
+ - Indonesian
+ - Polish
+ - Romanian
+ - Slovenian
+ - Spanish
+ - Swedish
+ - Turkish
+
+
 Overview of changes in Hitori 3.22.4
 ====================================
 
diff --git a/data/org.gnome.Hitori.appdata.xml.in b/data/org.gnome.Hitori.appdata.xml.in
index b8eaa2e..57ed149 100644
--- a/data/org.gnome.Hitori.appdata.xml.in
+++ b/data/org.gnome.Hitori.appdata.xml.in
@@ -47,6 +47,7 @@
   </kudos>
   <translation type="gettext">hitori</translation>
   <releases>
+    <release version="3.31.0" date="2019-02-19" />
     <release version="3.22.4" date="2017-10-02" />
     <release version="3.22.3" date="2017-04-30" />
   </releases>
diff --git a/meson.build b/meson.build
index a717423..087169b 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('hitori', 'c',
-  version: '3.22.4',
+  version: '3.31.0',
   meson_version : '>= 0.48.0',
   license: 'GPLv3+',
   default_options : [