[maven-release-plugin] prepare release diffutils-3.0

pom.xml

@@ -3,7 +3,7 @@
 	<groupId>com.github.wumpz</groupId>
 	<artifactId>diffutils</artifactId>
 	<packaging>jar</packaging>
-	<version>3.0-SNAPSHOT</version>
+	<version>3.0</version>
 	<name>java-diff-utils</name>
 	<description>The DiffUtils library for computing diffs, applying patches, generationg side-by-side view in Java.</description>
 	<url>https://github.com/wumpz/java-diff-utils</url>
@@ -24,7 +24,7 @@
 		<connection>scm:git:https://github.com/wumpz/java-diff-utils.git</connection>
 		<developerConnection>scm:git:ssh://git@github.com:wumpz/java-diff-utils.git</developerConnection>
 		<url>https://github.com/wumpz/java-diff-utils.git</url>
-		<tag>HEAD</tag>
+		<tag>diffutils-3.0</tag>
 	</scm>
 
 	<issueManagement>