pub fn parse_frontmatter(md: &str) -> Result<ManifestFrontmatter, Error>Expand description
Parse the ---...--- YAML frontmatter at the top of a MANIFEST.md
document into a strongly-typed struct.
Returns Error::MissingFrontmatter if the document does not begin
with a --- line or the closing fence is absent, and
Error::MissingField { field } if the YAML parses but is missing
one of the six required keys (volume, distro, distro-version,
created, kernel-source, distro-source).