Pre-baked MathML in Jekyll

I often run into two problems when reading a blog post on mathematics: My feed-reader does not evaluate Javascript, and all equations are presented as raw Mathjax or Latex-inline code. My feed-reader presenting me a bunch of gibberish There are of course feed-readers that do, but I don't use them. I could open the article in a browser, but alas I do block Javascript there as well. Mathjax in…