[CC-1590 (#198)

prepare-version-3-9-0] update version

Author: Ryouzanpaku

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres
 to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [3.9.0](https://github.com/unzerdev/php-sdk/compare/3.8.0..3.9.0)
+
+### Changed
+
+* Update paypage v2 styling parameter to match API changes.
+
 ## [3.8.0](https://github.com/unzerdev/php-sdk/compare/3.7.0..3.8.0)
 
 Support for Paypage v2 is added to SDK.

src/Unzer.php

@@ -57,7 +57,7 @@ class Unzer implements
     public const BASE_URL = 'api.unzer.com';
     public const API_VERSION = 'v1';
     public const SDK_TYPE = 'UnzerPHP';
-    public const SDK_VERSION = '3.8.0';
+    public const SDK_VERSION = '3.9.0';
 
     /** @var string $key */
     private $key;