Support for YAML frontmatter

[srid]

I have a Markdown file that begins with

---
slug: haskell-nix
tags: [blog]
date: 2019-12-03
---

The goal of this article is to get you comfortable managing simple #[[Haskell]] programs and projects using the **Nix** package manager without going too much into the details.

...

See https://github.com/srid/www.srid.ca/blob/master/Software/Nix/Nix%20recipes%20for%20Haskellers.md

This renders as follows -- note the disappearance of "slu" prefix in the first YAML key:

I imagine this is because the parser doesn't support YAML frontmatter.

[Sean10]

Got it.

[Sean10]

fixed in Support for YAML frontmatter from (https://github.com/tejasvi/markless/issues/16) · Issue #13 · Sean10/markless.

publish it in markless_sean10@1.0.18