• Email addresses with internationalized local parts could, with rare Unicode characters, be returned as valid but actually be invalid in their normalized form (returned in the normalized field). Local parts now re-validated after Unicode NFC normalization to ensure that invalid characters cannot be injected into the normalized address and that characters with length-increasing NFC normalizations cannot cause a local part to exceed the maximum length after normalization.
• The length check for email addresses with internationalized local parts is now also applied to the original address string prior to Unicode NFC normalization, which may be longer and could exceed the maximum email address length, to protect callers who do not use the returned normalized address.
• Improved error message for IDNA domains that are too long or have invalid characters after Unicode normalization.
• A new option to parse My Name <address@domain> strings, i.e. a display name plus an email address in angle brackets, is now available. It is off by default.
• Improvements to Python typing.
• Some additional tests added.