6 == Version 1.1 (the Francis Hwang edition)
7 * moved Regexp out of class methods into the ValidatesEmailFormatOf module
9 == Version 1.2 (the Ismael Santos Kafeltz and Michael MacDonald edition)
10 * added support for un-escaped and escaped special characters in the local part, per RFC 3696
11 * added :allow_nil option
13 == Version 1.2.1 (the RTFM edition)
14 * added support for quoted local parts
15 * added length checks for domain and local parts
16 * corrected escaped character support for RFC 3696 Errata
17 * added :allow_blank option
18 * added :unless option
21 * Now available as a gem on GitHub
22 * added should_validate_email_format_of