[gnome-mahjongg] Prepare 3.31.90

[Jeremy Bicha <jbicha src gnome org>]

commit e3c2d1f5e8ed8ff3c51ea2d60d16b3699c1f27bb
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sun Feb 3 20:31:29 2019 -0500

    Prepare 3.31.90

 NEWS        | 9 +++++++++
 meson.build | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index 396e10c..1ebd2fe 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,12 @@
+GNOME Mahjongg 3.31.90
+======================
+* Development release
+* Validate the AppStream metadata and .desktop file as build tests (Bilal)
+* Miscellaneous cleanup (Bilal & Jeremy)
+
+Contributors:
+ Jeremy Bicha, Bilal Elmoussaoui
+
 GNOME Mahjongg 3.31.4
 =====================
 * Development release
diff --git a/meson.build b/meson.build
index 98ac859..9b93b26 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project ('gnome-mahjongg', ['vala', 'c'],
-         version: '3.31.4',
+         version: '3.31.90',
          license: 'GPLv3+',
          default_options: [
              'warning_level=1',