3.0.0

Change

• ce261f3 Change to require Node.js 16
  migrate: update too
• d2d5adb Change to use exports
  migrate: don’t use private APIs
• f2020a7 Change API to allow different instances
  migrate: now, createLowlight, all, and common are exported;
  do createLowlight() to create a lowlight with nothing yet,
  createLowlight(common) for one with common languages, etc.
• 7fe3006 Rename registerLanguage to register
  migrate: rename registerLanguage to register
• 8d2645d Remove use of global highlight instance
  by @dschwank in #51
  migrate: make sure to register languages you want with lowlight

Full Changelog: 2.9.0...3.0.0