Bug?: warning for static method

WordPress shows the following error message:
Strict Standards: Non-static method MathJax::init() should not be called statically in /var/www/wp/wp-content/plugins/mathjax-latex/mathjax-latex.php on line 191

So I propose the following patch.

$diff mathjax-latex.php mathjax-latex.php.orig
40c40
<   static function init(){
---
>   function init(){
181c181
<   static function mathjax_settings_link( $links, $file ) {
---
>   function mathjax_settings_link( $links, $file ) {

This symptom started to appear since I migrated an existing wordpress server, so it might be because of the setting of the server (or maybe because of the version of PHP), but I think it is reasonable to modify MathJax-LaTeX to make it warning free.

https://ww.wp.xz.cn/plugins/mathjax-latex/