Typo in RemoteMultiWidget

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Apparently, there's a typo in line as_dict() method of RemoteMultiWidget class in widgets.py, missing an argument to the append() call. Will attach the patch in a minute.

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--- a/django_remote_forms/widgets.py
+++ b/django_remote_forms/widgets.py
@@ -254,7 +254,7 @@ class RemoteMultiWidget(RemoteWidget):
         widget_list = []
         for widget in self.widget.widgets:
             # Fetch remote widget and convert to dict
-            widget_list.append()
+            widget_list.append(widget.as_dict())

         widget_dict['widgets'] = widget_list