Wow, the code is utterly beautiful
Mustache can be quite limiting. Unless it’s a very deliberate design choice, I’d recommend switching to Jingoo.
Thanks for your message, I’ll pass the reference on to Jingoo!
I think the choice of YAML, Markdown and Mustach was mainly to “produce something fast” but it is quite possible to build new Arrows that support Jingoo! I’m going to try this weekend for my personal site.