v2.12.0

• add attributeName() method to Option objects
• Documentation updated for options with --no prefix
• typings: outputHelp takes a string as the first parameter
• typings: use overloads
• feat(typings): update to match js api
• Print default value in option help
• Fix translation error
• Fail when using same command and alias (#491)
• feat(typings): add help callback
• fix bug when description is add after command with options (#662)
• Format js code
• Rename History.md to CHANGELOG.md (#668)
• feat(typings): add typings to support TypeScript (#646)
• use current node