Added fix to the abstract-class.js file for issue #72. The fix is resolved by by5739.

lib/abstract-class.js

@@ -197,6 +197,10 @@ AbstractClass.create = function (data, callback) {
 
     function create() {
         obj.trigger('create', function (done) {
+
+            var data = this.toObject(true);  // Added this to fix the beforeCreate trigger not fire.
+                                             // The fix is per issue #72 and the fix was found by by5739.
+
             this._adapter().create(modelName, this.constructor._forDB(data), function (err, id) {
                 if (id) {
                     defineReadonlyProp(obj, 'id', id);