Changelog

Unreleased

Breaking: directives, the opaque carry among them (now carry), are spelled under an !adf: prefix (!adf:name … !adf:/name, !adf:name[content]{attrs}, !adf:name arg {attrs}) in place of the :::/::/:name forms; convert stored markdown per MIGRATION.md.
Breaking: unspellable-link leaves ConvertErrorCode; a link whose href or title no CommonMark escape spells is written as !adf:link[text]{attrs}.
Add adfToPlainMarkdown and plainMarkdownToAdf, a lossy pair converting ADF to and from markdown GitHub, GitLab and Obsidian render: alerts, callouts, task lists, ==highlights== and pipe tables.
Spell rule's color, style and weight and layoutSection's columnRuleStyle directly where they rode the opaque carry.
Fix a link whose text holds another link: the inner link is kept and the outer brackets stay text, where the outer link was dropped.
Fix an image inside another image's description: it flattens into the alt text, where it was refused.

First release: lossless conversion between ADF and an extended markdown flavour — adfToMarkdown, markdownToAdf and isAdfDocument. Plain CommonMark is valid input, nothing throws, and every error carries a code from a closed list.