use ToggleOperator() instead Apply()

Toggle mappings (``\^``, ``\~~`` etc.) work well only with ``ToggleOperator()``

I am not sure about this because i do not understand difference between ``Apply()`` and ``ToggleOperator()`` and it seems that the former is not called from anywhere. But ``Apply()`` just do not work for me well: e.g. ``\~~iw`` may set wrong boundaries around a word.