parent pom updated to v4

Author: simotripo

pom.xml

@@ -3,7 +3,7 @@
   <parent>
     <groupId>org.mybatis</groupId>
     <artifactId>mybatis-parent</artifactId>
-    <version>3</version>
+    <version>4</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>mybatis</artifactId>
@@ -23,6 +23,7 @@
   </scm>
   <properties>
     <findbugs.onlyAnalyze>org.apache.ibatis.*</findbugs.onlyAnalyze>
+    <clirr.comparisonVersion>3.0.2</clirr.comparisonVersion>
   </properties>
   <reporting>
     <plugins>