From 1.x to 2.x

All public static methods has been removed from HTML5 class and the general API to access the HTML5 functionalities has changed.

Before:

$dom = \HTML5::loadHTML('<html>....');
\HTML5::saveHTML($dom);

After:

use Masterminds\HTML5;

$html5 = new HTML5();

$dom = $html5->loadHTML('<html>....');
echo $html5->saveHTML($dom);