Publish 0.4.0 from master branch (#286)

Author: fsteeg

build.gradle

@@ -53,7 +53,7 @@ subprojects {
   }
 
   group = 'org.metafacture'
-  version = '0.4.0-SNAPSHOT'
+  version = '0.4.0'
 
   apply plugin: 'checkstyle'
   apply plugin: 'eclipse'