updated some plugin versions

Author: wumpz

pom.xml

@@ -67,7 +67,7 @@
 		<plugins>
 			<plugin>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.1</version>
+				<version>3.3</version>
 				<configuration>
 					<source>1.6</source>
 					<target>1.6</target>
@@ -147,7 +147,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-release-plugin</artifactId>
-				<version>2.4.2</version>
+				<version>2.5.2</version>
 				<configuration>
 					<localCheckout>true</localCheckout>
 					<pushChanges>false</pushChanges>
@@ -164,7 +164,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-source-plugin</artifactId>
-				<version>2.2.1</version>
+				<version>2.4</version>
 				<executions>
 					<execution>
 						<id>attach-sources</id>