Update to v4.1.2

Update publish workflow

Merge pull request #3479 from mathjax/develop

MathJax v4.1.0 release

Merge pull request #3402 from mathjax/develop

This is version 4.0.0

Merge branch 'v4.0-beta' into develop

Update mathjax-full version in package.json

Add LICENSE, CONTRIBUTONG.ms, and README.md to the distribution files…

… list

Add mathjax-modern-font dependency

Add v4.0.0-beta.3 files from mathjax-full

Update files to v4.0-alpha.1