Release 1.2.0 (#392)

Author: xuantuan58

pom.xml

@@ -5,7 +5,7 @@
   <artifactId>td-client</artifactId>
   <name>Treasure Data Client for Java</name>
   <description>Treasure Data Client for Java.</description>
-  <version>1.1.3</version>
+  <version>1.2.0</version>
   <packaging>jar</packaging>
   <url>https://github.com/treasure-data/td-client-java</url>