[maven-release-plugin] prepare release jaxb2-maven-plugin-2.4

pom.xml

@@ -17,8 +17,7 @@
   specific language governing permissions and limitations
   under the License.
 -->
-<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>
 
     <parent>
@@ -28,7 +27,7 @@
     </parent>
 
     <artifactId>jaxb2-maven-plugin</artifactId>
-    <version>2.4-SNAPSHOT</version>
+    <version>2.4</version>
     <packaging>maven-plugin</packaging>
 
     <name>JAXB-2 Maven Plugin</name>
@@ -88,7 +87,7 @@
         <connection>scm:git:https://github.com/mojohaus/jaxb2-maven-plugin.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/mojohaus/jaxb2-maven-plugin.git</developerConnection>
         <url>https://github.com/mojohaus/jaxb2-maven-plugin.git</url>
-        <tag>HEAD</tag>
+        <tag>jaxb2-maven-plugin-2.4</tag>
     </scm>
     <issueManagement>
         <system>GitHub</system>