Update release notes, version number and date

Author: martignoni

CHANGELOG.md

@@ -3,6 +3,17 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/) and follow principles of [keep a changelog](https://keepachangelog.com).
 
+## Version 2.15.0, 2023-05-04
+
+### Add
+- Detect CM4S model (issue #112).
+
+### Changed
+- Tested against upcoming Moodle 4.2 (issue #113).
+
+### Fixed
+- Fix regression introduced when fixing #73 (issue #110).
+
 ## Version 2.14.2, 2022-11-20
 
 ### Fixed

version.php

@@ -26,9 +26,9 @@
 
 $plugin = new stdClass();
 
-$plugin->version  = 2023040200;
-$plugin->release = '2.15.0-dev';
+$plugin->version  = 2023050400;
+$plugin->release = '2.15.0';
 $plugin->requires = 2018120300;
-$plugin->supported = [36, 410];
-$plugin->maturity = MATURITY_BETA;
+$plugin->supported = [36, 420];
+$plugin->maturity = MATURITY_STABLE;
 $plugin->component = 'tool_moodlebox';