Update eventemitter from v2 to v3 (#681)

* fixed by npm audit fix

* change to  "eventemitter3": "^5.0.1"

* Adjust es6 transpiler to eventemitter3

* Fix tests to work with eventemitter3

---------

Co-authored-by: Matthijs van der Burgh <matthijs.van.der.burgh@vbti.nl>

Author: ipa-rwu

.eslintrc

@@ -6,7 +6,7 @@
     "mocha": true
   },
   "globals": {
-    "EventEmitter2": true,
+    "EventEmitter3": true,
     "THREE": true,
     "ROS3D": true,
     "ROSLIB": true,

es6-transpiler.js

@@ -536,8 +536,8 @@ const transpile = {
               importString = "import * as ROSLIB from 'roslib';"
               break;
             }
-            case 'EventEmitter2': {
-              importString = "import EventEmitter2 from 'eventemitter2';"
+            case 'EventEmitter3': {
+              importString = "import EventEmitter3 from 'eventemitter3';"
               break;
             }
             case 'ColladaLoader': {