bump version and rebuild

umd/index.dev.js

@@ -853,7 +853,7 @@ module.exports = JSON.parse("{\"en\":{\"archived_contacts\":\"Archived contacts
 "use strict";
 __webpack_require__.r(__webpack_exports__);
 /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "PACKAGE_VERSION", function() { return PACKAGE_VERSION; });
-var PACKAGE_VERSION = "0.16.2-rc3";
+var PACKAGE_VERSION = "0.16.2-rc4";
 
 /***/ }),
 
@@ -4946,7 +4946,7 @@ var TinodeWeb = function (_React$Component) {
             topicSelectedAcs: cont.acs
           });
         }
-      } else if (what == 'del') {} else {
+      } else if (what == 'del') {} else if (what == 'upd') {} else {
         console.log("Unsupported (yet) presence update:" + what + " in: " + cont.topic);
       }
     }