* Format JSON files.
Currently we store JSON as a single line in files. We should prettify it
like we do the other formats.
* Add output parsers to the frontmatter list.
* Cleanup frontmatter format parser options.
* Support writing frontmatter in TOML and JSON.
Right now we can read TOML or JSON frontmatter by inferring,
but we can only write frontmatter in YAML. This change allows the
frontmatter format to be explicitly set for reading and writing.
* Fix frontmatter formatter.
* Update Frontmatter formatter tests.
* Update frontmatter format docs.
* Update links
Update test-drive and quick-start references
Change relative links to absolute so they work in GitHub repo view
* Regain paragraph margins
Adding back the bottom margin had no effect on landing page, except a 16px legnth increase in the hero and editor sections. Offset by reducing the variable that set their margin/padding by the same amount.
