[maven-release-plugin] prepare release 0.5.0

pom.xml

@@ -1,10 +1,8 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.github.johrstrom</groupId>
 	<artifactId>jmeter-prometheus-plugin</artifactId>
-	<version>0.5.0-SNAPSHOT</version>
+	<version>0.5.0</version>
 	<name>Jmeter-Prometheus Listener Plugin</name>
 	<description>A Jmeter plugin that creates a Prometheus endpoint of results.</description>
 	<url>https://github.com/johrstrom/jmeter-prometheus-plugin</url>
@@ -36,7 +34,8 @@
 		<url>https://github.com/johrstrom/jmeter-prometheus-plugin</url>
 		<connection>scm:git:git://github.com/johrstrom/jmeter-prometheus-plugin.git</connection>
 		<developerConnection>scm:git:git@github.com:johrstrom/jmeter-prometheus-plugin.git</developerConnection>
-	</scm>
+	  <tag>0.5.0</tag>
+  </scm>
 
 	<distributionManagement>
 		<snapshotRepository>