Testing incremental dependency tracking.

Version 0.3.0

ragconnect.base/src/main/java/org/jastadd/ragconnect/compiler/Compiler.java

@@ -78,6 +78,7 @@ public class Compiler extends AbstractCompiler {
 
     printMessage("Writing output files");
     final List<String> handlers = new ArrayList<>();
+    handlers.add("RagConnectObserver.jadd");
     if (ASTNode.usesMqtt) {
       handlers.add("MqttHandler.jadd");
     }