tweaked 'flashCell' API to accept an optional half-cycle count parameter AND start flashing immediately -- this allows users to 'abuse' the flashCell() API into turning the giving cellFlashingCssClass class ON (or OFF) and keep it like that (with an optional leading flash sequence as the count may be specified as ZERO or higher)
... and make sure intermediate .render() actions keep the 'flashing' class intact too, using the ...CssStyles() APIs.