Remove mathjax-node-page and upgrade to Mathjax v3

[ashwinvis]

Problem summary

Some of the dependencies are deprecated, in particular mathjax-node-page. Installling would display the following deprecation:

npm WARN deprecated mathjax-node-page@3.2.0: This package has been archived. MathJax v3 provides equivalent functionality.

Expected

No deprecation warnings

[dev-onejun]

Thank you for maintaining this repo. I am one of those who use this well.

Since it seems that you have already worked on upgrading mathjax version 3 related to use mathjax-full,
I want to suggest to use https://github.com/pkra/mathjax-img while upgrading mathjax v3.

[ashwinvis]

@dev-onejun one should be able to implement it themselves using

https://docs.mathjax.org/en/latest/input/tex/extensions/newcommand.html

Wouldn't that be a more generic solution?

[dev-onejun]

@dev-onejun one should be able to implement it themselves using

https://docs.mathjax.org/en/latest/input/tex/extensions/newcommand.html

Wouldn't that be a more generic solution?

I do not fully understand MathJax and its related packages, but it seems that using newcommand could be more generic solution rather than using mathjax-img.

Do you plan to define img tags as a default while supporting mathjax v3?