Use this version ONLY for Magento 2.4
WARNING
Since Feb 1, packagist don't allow new versions of any package for composer v1, so if you use composer v1 first you need to run
composer config repositories.ebizmarts composer https://packages.ebizmarts.com
To install it, run
composer require mailchimp/mc-magento2:103.4.72
Implemented enhancements:
- Add support for grouped products #2156