Add release notes.

Author: samuel-williams-shopify

releases.md

@@ -1,3 +1,21 @@
 # Releases
 
+## Unreleased
+
+- Use Markly's native front matter parser (`Markly::FRONT_MATTER`) instead of manual string splitting, parsing each slide document once and extracting front matter directly from the AST.
+- Use the last `---` hrule in the AST as the presenter notes separator, so earlier `---` dividers in slide content are preserved correctly.
+
 ## v0.2.0
+
+- Add support for Mermaid diagrams in slides.
+
+## v0.1.0
+
+- Initial release.
+- Slide files are Markdown with YAML front matter for metadata (`template`, `duration`, `title`, `skip`, `marker`, `transition`, `focus`).
+- Slide content is split into named sections by top-level headings, rendered to HTML via Markly.
+- Presenter notes are separated from slide content by a `---` divider.
+- Magic move transitions between slides.
+- Navigation control in the presenter view.
+- Code highlighting with line-range focus support.
+- Live state synchronisation between display and presenter views over WebSockets.