4.0.0

• Introduced custom events (consumable externally)
• Reduce API surface area
  • Deprecated activate & deactivated. Exposed setup and destroy as replacements
  • Updated documentation to reflect API changes
• HTML standardization around list items
• Fixed throttling
• Added superscript & subscript css
• Added better paste cleaning for Microsoft Word
• Convert anchor preview into overrideable extension
• Added disableAnchorPreview option