Fixed PUM issue #3577 when an anonymous user fills out a webform the civirules engine breaks

info.xml

@@ -14,8 +14,8 @@
     <author>CiviCooP</author>
     <email>helpdesk@civicoop.org</email>
   </maintainer>
-  <releaseDate>2016-10-20</releaseDate>
-  <version>1.5</version>
+  <releaseDate>2016-11-08</releaseDate>
+  <version>1.6</version>
   <develStage>stable</develStage>
   <compatibility>
     <ver>4.4</ver>