0.4.3 — bug fixes

• Fixes a rendering bug where YAML values containing HTML element names
(e.g. <title>) could disrupt how the rest of the document
rendered. Raw HTML in scalar values is now safely neutralized at HTML
render time.

• Clarifies {{#each}} block scope: lookups inside an iteration resolve
against the current item only — no silent fall-through to outer/root
scope.

• See SPEC.md and CHANGELOG for full details:
https://github.com/stonebraker/markedin/blob/main/SPEC.md