Fixes Issue #16 by including missing methods (#18)

Prepares 0.4.0 release

Fix inaccurate otp_drift_window value (#15)

Add mongoid and multiple rubies to test suite (#14)

Reverts #11 pending the outcome of issue #12 (#13)

Prepare 0.3.0 release

Copy "Add ability to deny tokens that are being reused" from #10 (#11)

Prepares 0.2.1 release

Permit Rails versions < 6.1 and upgrade symmetric-encryption to 4.3.0 (#9)

Update rotp gem dependency to ~> 4.1 (#8)

Prepare 0.2.0 for release & switch to CircleCI (#7)

Fix test suite (#5)

Update Symmetric-encryption requirement to version 4.0. (#2)

Update SymmetricEncryption language

Restore copyright