chore: use ES6 exports

Modified the file to use 'export default' instead of 'module.exports'
so that I don't get errors stating that there is no default export.

lib/features/modeling/cmd/UpdateModdlePropertiesHandler.js

@@ -1,21 +1,20 @@
-'use strict';
-
-var reduce = require('min-dash').reduce,
-    keys = require('min-dash').keys,
-    forEach = require('min-dash').forEach,
-    is = require('../../../util/ModelUtil').is,
-    getBusinessObject = require('../../../util/ModelUtil').getBusinessObject;
-
-
-function UpdateModdlePropertiesHandler(elementRegistry) {
+import {
+  reduce,
+  keys,
+  forEach
+} from 'min-dash';
+
+import {
+  is,
+  getBusinessObject
+} from '../../../util/ModelUtil';
+
+export default function UpdateModdlePropertiesHandler(elementRegistry) {
   this._elementRegistry = elementRegistry;
 }
 
 UpdateModdlePropertiesHandler.$inject = ['elementRegistry'];
 
-module.exports = UpdateModdlePropertiesHandler;
-
-
 UpdateModdlePropertiesHandler.prototype.execute = function(context) {
 
   var element = context.element,
@@ -88,4 +87,4 @@ function getAllDataObjectReferences(dataObject, elementRegistry) {
           getBusinessObject(element).dataObjectRef === dataObject
     );
   });
-}
+}