Button height will now auto adjust when there is a line break to help account for localization. Link colors will now properly change when using `skeleton-auto.css` to be more accessible colors when in dark or light theme. Focus states will now appear for `pressed` and keyboard navigation for accessibility improvements.
Added skeleton-auto.css, which dynamically sets the theme based on the browser and/or the Operating Systems colors, if supported.
Set Default Theme to Auto with comments on helping switch to light and dark theme stylesheets.
Darkened the skeleton-dark.css background color to the same as the color that skeleton-auto.css sets it as, which is html recommended standard color of #121212.
