2.0.0

• a68d25e Update unist-util-visit
  (breaking, potentially, if you or your dependents use typescript)
• da6d6ed Update unist-util-is
  (breaking, potentially, if you or your dependents use typescript)
• b8da998 Refactor prose
• dff2ad4 Add keyword
• 0b52043 Add funding field to package.json