MailChimp for WooCommerce was updated to version 2.1.3, from version 2.1.2. Changelog:
- Fix subscriber status for repeat transactional customers to stay transactional.
- Remove shipping and billing address requirements for order submission.
- Do not unsubscribe someone who has previously subscribed when unchecking the newsletter sign up box.
- Update newsletter checkbox style to be consistent with WooCommerce styles.
- Make sure WooCommerce plugin is running before running any plugin code.
- Fix compatibility issue with WP-Cron