[amtk] Release 5.3.1

[Sébastien Wilmet <swilmet src gnome org>]

commit 29f7889b67bdebbd8c3119f1d48d44fafa413c99
Author: Sébastien Wilmet <sw swilmet be>
Date:   Mon Jan 11 10:34:35 2021 +0100

    Release 5.3.1

 NEWS        | 2 +-
 README.md   | 2 +-
 meson.build | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/NEWS b/NEWS
index 97d8a0b..1ef8269 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-News in 5.3.1, 2021-xx-yy (not yet released)
+News in 5.3.1, 2021-01-11
 -------------------------
 * Build: port to Meson, remove Autotools.
 * Translation updates.
diff --git a/README.md b/README.md
index 702de32..1e30e0f 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Amtk - Actions, Menus and Toolbars Kit for GTK applications
 ===========================================================
 
-This is version 5.3.0 of Amtk.
+This is version 5.3.1 of Amtk.
 
 Amtk is the acronym for “Actions, Menus and Toolbars Kit”. It is a basic
 GtkUIManager replacement based on GAction. It is suitable for both a
diff --git a/meson.build b/meson.build
index 0d7c418..47e36a8 100644
--- a/meson.build
+++ b/meson.build
@@ -6,7 +6,7 @@
 project(
   'amtk', 'c',
   meson_version: '>= 0.53',
-  version: '5.3.0',
+  version: '5.3.1',
   default_options: ['warning_level=2']
 )