Fixes & Features Release

• Adds enhanced mode; enhanced hashing allows you to opt-in to ensuring optimal entropy on your users passwords by first making use of the fast SHA384 algorithm before BCrypt hashes the password.
• Added Hash interrogation to allow a hash to be passed in and its component parts be returned.
• Added timeouts to regex and set compiler flags for msbuild so < .net 4.5 (where timeouts were added to regex) we use old regex method.
• Alter safe equals from ceq/and to xor/and/ceq moving the check outside of the loop to mitigate against branch prediction causing a timing leak
• Add new method PasswordNeedsReshash(string hash, int newMinimumWorkLoad) as a helper method for developers to use when logging a user in to increase legacy workloads
• Add ValidateAndReplacePassword method to allow inline password validation and replacement. Throws BcryptAuthenticationException in the event of authentication failure.
• Cleaned up xml-doc for intellisense
• Increased compatibility by allowing BCrypt revisions from other frameworks/languages to be validated and generated whilst maintaining compatibility.
• VS2017 RTW changes