CSS clip-path: url(#…) gets processed to absolute path

Hi there!

I love your plugin and am very glad to be able to use it.

Recently I discovered that the CSS inline function processes clip-path-URLs that point to a SVG with an anchor link to absolute urls. So

clip-path: url(#some-svg);

becomes

clip-path: url(https://mysite.net/#some.svg);

Which will be useless in most cases.

I would propose to change the regex in fastvelocity_min_get_css() in functions.php to not match urls that start with #:

$css = preg_replace("/url\(\s*['\"]?(?!data:)(?!http)(?![\/'\"#])(.+?)['\"]?\s*\)/ui", "url(".dirname($url)."/$1)", $css);

That fixed it for me.

Cheers,

Phil