+ `request_two_step_verification` and `requires_two_step_verification` now have a `allow_unverified` parameter which determines if an unverified account is allowed to request a verification session. Defaulted to `False`
+ Password recovery request is now done via `request_two_step_verification` instead of `request_password_recovery`. Change reflected in README
+ Unit test improvements
+ Verification blueprint removed
+ Authentication blueprint improvements
+ Documentation corrections