Upgrade to PHP 8.4 DOM

[adamjgriffith]

PHP 8.4 has been released with a rewrite to the ext-dom extension. These classes are compatible with HTML 5 and are WHATWG spec-compliant; solving long-standing bugs in the DOM extension.

See: https://www.php.net/manual/en/migration84.new-features.php#migration84.new-features.dom

Would you consider a PR to upgrade this package?

[BenMorel]

Hi, yes I would most definitely accept a PR! How do you see this?

• use the new DOM API when PHP >= 8.4 is detected, and fall back to the old API otherwise
• or require PHP 8.4 from now on?

[adamjgriffith]

I would imagine as this package receives little updates we could just bump the major (minor in this case as it's still 0.x) and enforce a PHP 8.4 minimum version. What do you think?

[BenMorel]

I don't mind bumping the minimum requirement to 8.4. This package doesn't have many users yet, and I'm about to do the same for brick/geo anyway, as I will need PHP 8.4 feature for the next version, too.

[ddebin]

Made #7, with backward compatibility.