update minor version to 5.2.0

Author: xsalefter

pom.xml

@@ -25,7 +25,7 @@
     </parent>
     <groupId>org.kill-bill.billing.plugin.java</groupId>
     <artifactId>killbill-base-plugin</artifactId>
-    <version>5.1.11-SNAPSHOT</version>
+    <version>5.2.0-SNAPSHOT</version>
     <packaging>jar</packaging>
     <name>Kill Bill base OSGI plugin</name>
     <description>Kill Bill base OSGI plugin</description>