add changelog

Author: Crim

CHANGELOG.md

@@ -0,0 +1,6 @@
+# Change Log
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+## 0.1.0 (x/x/2023)
+- Initial Release!

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>org.sourcelab</groupId>
     <artifactId>buildkite-api-client</artifactId>
-    <version>0.0.1</version>
+    <version>0.1.0</version>
     <packaging>jar</packaging>
 
     <!-- Require Maven 3.3.9 -->