0.2.1
    Fix merchant_id look-up in multi-tenancy configuration
    Increase default message field length to 510
    Add endpoint to generate token
    Add ability to add additional cards on existing customer using nonce

0.2.0
    Initial release for Kill Bill 0.16.x

0.1.0
    Initial release for Kill Bill 0.15.x

0.0.1
    Initial release