MathJax CDN hosted at cdn.mathjax.org shutting down April 30

[isms]

Announcement here: https://www.mathjax.org/cdn-shutting-down/

Alternative CDN providers
The easiest way for most site owners will be to simply switch to another CDN provider. We recommend cdnjs which uses CloudFlare for delivery and thus provides the same level of quality as our own CDN. We have been in touch with cdnjs’s maintainers and will help push future MathJax releases to cdnjs.

For example, if you have been using the latest MathJax version (v2.7.0) change

<script type="text/javascript" async
  src="https://cdn.mathjax.org/mathjax/2.7-latest/MathJax.js?...">
</script>

to

<script type="text/javascript" async
  src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?...">
</script>

[szhorvat]

I came here to say the same. Could you fix this please @barrysteyn and make a new release (which also includes the Pelican 3.7 fixes—there's a pull request for that)?