Version: 2.1
  - Update the PHPMailer library to the latest version

Version: 2.0
  - The minimum required PHP version is 5.5
  - Improved error handling and debugging
  - Added support for cc and bcc
  - Added "honeypot" spam protection feature
  - Added support for Google reCaptcha spam protection
  
Version: 1.0
  - Initial Release
  
