downgrade maven release plugin

Author: KenChoi

example/main/java/cn/jpush/api/examples/PushExample.java

@@ -4,8 +4,7 @@
 import java.util.Map;
 
 import cn.jpush.api.push.model.notification.*;
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
+import com.google.gson.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -21,7 +20,6 @@
 import cn.jpush.api.push.model.SMS;
 import cn.jpush.api.push.model.audience.Audience;
 import cn.jpush.api.push.model.audience.AudienceTarget;
-import com.google.gson.JsonObject;
 
 public class PushExample {
     protected static final Logger LOG = LoggerFactory.getLogger(PushExample.class);

pom.xml

@@ -118,7 +118,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-release-plugin</artifactId>
-				<version>2.5.3</version>
+				<version>2.5.1</version>
 				<dependencies>
 					<dependency>
 						<groupId>org.apache.maven.plugins</groupId>