Release Notes: A JSON Web API was added. SMTP support was added. A WSDL namespace issue when imported in VisualStudio .NET was corrected. TOKEN, LIST, and LASTOTP fallback methods are now allowed with any OTPType. The fallback is automatically disabled if the user data are missing. SMS and Mail OTP support prefetched delivery mode (next OTP is send after authentication). LASTOTP has an expiration time. Major code rewrites, optimizations, and OTP fallback changes were made.