2.18.0

Development:

• Accept snake_case variants of options in addition to camelCase variants in \markdownSetup and Lua CLI. Accept snake_case and caseless variants of options in \setupmarkdown. (#193, #194, #195, #196, #197, #198)
• Rename renderers, renderer prototypes and options based on the semantics of elements: (#187, #201)
  • Rename the horizontalRule and footnote renderers and renderer prototypes to thematicBreak and note.
  • Rename the footnotes and inlineFootnotes options to notes and inlineNotes.
  • Rename the HorizontalRule rule to ThematicBreak and increment grammar_version to 2.
    This change is not backwards-compatible with the grammar_version of 1.
• Add \markdownEscape macro that inputs a TeX document in the middle of a markdown document fragment. (1478f7b)
• Add support for raw attributes. (#173, #202)

Fixes:

• Fix missing support for forward slashes in \markdownSetup{jekyllDataRenderers = {...}} keys. (#199, #200)
• Fix the plain LaTeX option not preventing changes to renderer prototypes. (013abbb)

Continuous Integration:

• Check user manual with MarkdownLint. (#203)

Contributed Software:

• Update contributions/pandoc-to-markdown. (contributed by @drehak, 3d5b8e5, d3073bc)

Deprecation:

• Deprecate horizontalRule and footnote renderers and renderer prototypes. (#187, #201)