Fix a regression in indentation caused by a bugfix in @lezer/lr 1.4.7.
List @lezer/lr as a direct dependency for tools that require this.
Make block sequence items, rather than the whole sequence, fold targets.
Make block mapping entries, rather than the entire mapping, foldable.
yamlFrontmatter can now be used to wrap a language with a YAML frontmatter.
First versioned release.