### New features

* [#60](https://github.com/solidusio/rubocop-solidus/issues/60): Create new cop to check existing_card_id. ([@MassimilianoLattanzio][])

### Bug fixes

* [#60](https://github.com/solidusio/rubocop-solidus/issues/60): Fix overridden add_offense method. ([@MassimilianoLattanzio][])

[@MassimilianoLattanzio]: https://github.com/MassimilianoLattanzio