Merge pull request #107 from jiakuan/feature/106-cacheable-task

Enable build caching for GwtCompileTask

Author: jiakuan

plugin/src/main/java/org/docstr/gwt/GwtCompileTask.java

@@ -19,6 +19,7 @@
 import org.gradle.api.file.DirectoryProperty;
 import org.gradle.api.model.ObjectFactory;
 import org.gradle.api.provider.Property;
+import org.gradle.api.tasks.CacheableTask;
 import org.gradle.api.tasks.Input;
 import org.gradle.api.tasks.Optional;
 import org.gradle.api.tasks.OutputDirectory;
@@ -27,6 +28,7 @@
 /**
  * Task for compiling GWT modules.
  */
+@CacheableTask
 public abstract class GwtCompileTask extends AbstractBaseTask {
 
   /**