[Improvement] Add maxLength configuration and default to isStrongPassword

[thedevelinmycode]

isStrongPassword should include a configuration option for maxLength of a password.

I believe this is a valuable improvement for isStrongPassword because one hits a point of diminishing returns in password strength as password length increases. It would also help preclude overflow attacks.

I'm willing to work on this.

[profnandaa]

Sure, good catch, thanks!