• Update markdownlint dependency to 0.26.0
  • Add MD051/link-fragments: Link fragments should be valid
  • Add MD052/reference-links-images: Reference links and images should use a label that is defined
  • Add MD053/link-image-reference-definitions: Link and image reference definitions should be needed (auto-fixable)
  • Improve MD010/MD031/MD035/MD039/MD042/MD044/MD049/MD050
  • Add markdownlint-disable-line inline comment
  • Support ~ paths in configuration files
  • Improve performance
• Add .markdownlint.jsonc to list of supported configuration files
• Remove support for end-of-life Node version 12
• Update all dependencies via Dependabot