Automate WooCommerce 6.0.21

* Fix - Issue where private/draft products could appear when using the "shop.products" variable
* Fix - Prevent false positive click on links shortened by Bitly
* Fix - Issue where expired AutomateWoo coupons were not being deleted

* Announcement - AutomateWoo 4.8 – New WooCommerce Subscriptions Features, Mailchimp Tags, Performance Improvements and more - WooCommerce
* New - Add subscription order triggers which enable the use of subscription variables with order triggers. New triggers:
* "Subscription Order Created"
* "Subscription Order Paid"
* "Subscription Order Status Changed"
* New - Add support for adding/removing Mailchimp tags with new action "Mailchimp - Update Contact Tags"
* New - Add trigger: "Subscription Created - Each Line Item"
* New - Add rule "Customer - 2nd Last Paid Order Date"
* New - Add subscription item variables: "subscription_item.attribute", "subscription_item.meta" and "subscription_item.quantity"
* New - Add order variables: "order.date_paid" and "order.date_completed"
* New - Add a "WooCommerce Deposits" option to the "Order - Created Via" rule as an integration with the WooCommerce Deposits extension
* New - Add support for using "WooCommerce Points & Rewards" points modifier coupons with workflow generated coupons
* New - Allow email templates to have a custom file path. This means templates can be added in plugins rather than the current theme.
* Performance - Major optimization of the async events system. Events are now only created when they are specifically required by the site.
* Performance - Optimize initial customer setup database queries
* Tweak - Increase minimum PHP version to 5.6.20
* Tweak - Recalculate coupons when adding/removing subscription products via a workflow (requires WooCommerce 3.8)
* Tweak - Exclude orders not created via the checkout from conversion tracking e.g. automatic subscription renewals are excluded
* Tweak - Allow the "Customer - Opted In" trigger to be used for stores in "Opt-out" mode
* Tweak - Use the order created date instead of order paid date in customer purchase rules
* Tweak - Allow a custom path to be set for email templates allowing templates to be created by plugins
* Tweak - Updated ActiveCampaign API wrapper to the latest version
* Fix - Campaign Monitor API error
* Fix - A plugin conflict with admin screen items per page settings
* Fix - Issue where subscription before renewal/end queries were missing the first and last second of each day
* Fix - Carts admin table: Sorting by the total column did not work
* Fix - UTM tracking params did not work with the "order.reorder_url" variable

* Fix - Missing class error that occurred in the background on WooCommerce versions older than 3.7