allow special value of "initial" for "max"

[Merott]

Specifying "initial" as the max value will stop increasing the font size beyond the initial font size.

You may set data-fittext-max to the special value "initial" in order to prevent the font size from increasing beyond the CSS-computed style. This requires the font-size property to have been either inherited, or applied via a CSS selector. It does not work for inline font-size set via an inline style attribute. It also requires support for window.getComputedStyle() (IE 9+).

[patrickmarabeas]

Thanks for the PR, finally implemented : )

[Merott]

👍

[patrickmarabeas]

v4.1.0: uses the more semantic 'inherit' value instead. Also used by data-fittext-min.