PHP warning: __autoload() is deprecated

[cba85]

Hello,

I obtained a PHP warning on PHP 7.2 when trying to install wordpress-12factor using composer wordpress-setup-core-install.

PHP Deprecated:  __autoload() is deprecated, use spl_autoload_register() instead in /wordpress/wp-includes/compat.php on line 502

I fixed it replacing:

function __autoload( $classname ) {
    ...
}

by

function spl_autoload_register( $classname ) {
    ...
}

Thank you for your useful project!