Bump to 0.4 release

Signed-off-by: Christopher Grote <chris@thegrotes.net>

Author: cmgrote

java/pom.xml

@@ -21,7 +21,7 @@
     <artifactId>watson-data-api-client</artifactId>
     <packaging>jar</packaging>
     <name>watson-data-api-client</name>
-    <version>0.4-SNAPSHOT</version>
+    <version>0.4</version>
     <url>https://github.com/IBM/watson-data-api-clients/java</url>
     <description>IBM Watson Data API Java Client</description>
     <scm>