The emv package is an experimental package for handling EMV data. It may have limitations and not suitable for all use-cases. You should carefully evaluate if it fits your needs, and don't hesitate in reaching out if you have any questions or concerns.
If you encounter any bugs or issues, or have feedback on your experience using the package, please let us know. We welcome contributions to improve the package and if you are interesting in helping out, feel free to submit pull requests or open new issue. We hang out in the #iso8583 channel on the Moov Community Slack.