2.4.0 - Product model import

What's Changed

💪 Improvements

• Import Product Models by @lruozzi9 in #191
• Added French, Spanish, and German translations

📝 Upgrade notes

This version adds the ProductModel importer. If you are using the webhook no changes are requested as it will be automatically enqueued on every update.
If you are using the cronjob, you have to add the --importer="ProductModel" option to the command that imports every minute:

- *   *   *  *  *  /path/to/sylius/bin/console -e prod -q webgriffe:akeneo:import --since-file=/path/to/sylius/var/storage/akeneo-import-sincefile.txt --importer="Product" --importer="ProductAssociations"
+ *   *   *  *  *  /path/to/sylius/bin/console -e prod -q webgriffe:akeneo:import --since-file=/path/to/sylius/var/storage/akeneo-import-sincefile.txt --importer="Product" --importer="ProductModel" --importer="ProductAssociations"

Full Changelog: v2.3.0...v2.4.0