This release does not contain any breaking changes.
- Bump pulldown-cmark from v0.12.2 to v0.13.0. See <https://github.com/pulldown-cmark/pulldown-cmark/releases/tag/v0.13.0>.
- Add new options from pulldown-cmark v0.13.0: ENABLE_SUPERSCRIPT, ENABLE_SUBSCRIPT, ENABLE_WIKILINKS.
- Add new event types associated with the new options.
- Add a simple script to the documentation to compare performance with other libraries.