changer version to 0.2.11 (#250)

Co-authored-by: hujun3 <[email protected]>

Author: hujun-w-2

pom.xml

@@ -8,7 +8,7 @@
         <version>7</version>
     </parent>
     <properties>
-        <revision>0.2.11-beta</revision>
+        <revision>0.2.11</revision>
         <maven_javadoc_version>3.0.1</maven_javadoc_version>
         <maven_surefire_version>2.19.1</maven_surefire_version>
         <maven-source-plugin.version>3.1.0</maven-source-plugin.version>