Upgrade to Groovy 3.0.4

Author: jericks

pom.xml

@@ -514,7 +514,7 @@
     </reporting>
     <properties>
         <gt.version>24-SNAPSHOT</gt.version>
-        <groovy.version>3.0.3</groovy.version>
+        <groovy.version>3.0.4</groovy.version>
     </properties>
     <name>geoscript groovy</name>
     <description>A groovy implementation of geoscript.</description>