[CC-888] Release 5.3.0 prep. (#158)

Author: Ryouzanpaku

CHANGELOG.md

@@ -6,9 +6,9 @@ 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).
 
-## Unreleased
+## [5.3.0](https://github.com/unzerdev/java-sdk/compare/5.2.0..5.3.0)
 
-Click To Pay payment method is added to Java SDK.
+Support for Click To Pay payment method is added to SDK.
 
 ### Added
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.unzer.payment</groupId>
     <artifactId>java-sdk</artifactId>
-    <version>5.2.0</version>
+    <version>5.3.0</version>
     <name>Unzer Java SDK</name>
     <description>Unzer SDK provides an easy way to use Unzer Payment API.</description>
     <url>https://docs.unzer.com/</url>