fix for the assembly target in the makefile

makefile

@@ -40,7 +40,8 @@ compile: easy-units
 
 # Compile into a standalone jar file
 jar: compile
-	mvn assembly:single
+	mvn clean compile assembly:single
+#	mvn assembly:single
 
 start-portforwarding:
 	sudo iptables -t nat -N CAOSDB