Getting "Uncaught TypeError: Cannot read property 'Hub' of undefined"

[fcherny]

Whenever I run with the mathsymbols plugin with internet access disabled, I get an error on this statement:
MathJax.Hub.Queue(['Typeset', MathJax.Hub, el], function () {
(which makes sense because the html is loading a mathjax script from: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-MML-AM_CHTML)
Would it be possible to change the plugin so that MathJax is loaded as part of the plugin and is therefore no longer dependent on loading from a cdnjs?