KaTeX support in v0.14 seems to be broken for external (.md) contents

[anaderi]

as I create dummy slides with KaTeX https://github.com/gnab/remark/wiki/LaTeX-Using-KaTeX those work fine, but as soon as I move contents to external .md file

<       var slideshow = remark.create({
<         sourceUrl: 'main.md',
<       });

---
>       var slideshow = remark.create();

I don't see any formulae, just plain text it still works fine if I change to remark v0.13

Please bring it back )

UPD: and maybe consider adding some tests?

[anaderi]

ahem?