Automate WooCommerce 6.0.21

* Announcement - AutomateWoo 4.9 - WooCommerce
* New - "subscription.payment_count" variable.
* New - Order line item rules:
* Order Line Item - Product
* Order Line Item - Subtotal
* Order Line Item - Tax Total
* Order Line Item - Total
* New - An error message will be added to the workflow log when there are no valid email recipients.
* New - Add "AUTOMATEWOO_ACTIVE_CAMPAIGN_DEBUG" constant for debugging Active Campaign.
* New - Update Bitly API to version 4.
* New - Opt-in tracking data for AutomateWoo
Data sent to WooCommerce:
* Plugin version
* Settings:
* Whether opt-in is enabled, whether the checkbox is available on the checkout page, and whether the checkbox is available on the account sign-up page
* Whether session tracking is enabled
* Whether session tracking requires cookie consent and the name of the cookie
* Whether presubmit capture is enabled
* Whether the abandoned cart feature is enabled
* Whether the communication account tab is enabled
* The license system in use (legacy automatewoo.com vs. woocommerce.com)
* Whether any of these integrations are in use: Mailchimp, Campaign Monitor, Active Campaign, Twilio, Bitly
* The names of actions that are in use
* The name of triggers that are in use
* The number of active workflows
* The number of conversions that have been made
* The total value of all conversions
* Workflow Log data:
* Number of times workflows have run
* Number of times a workflow ran with conversion tracking enabled
* Number of times a workflow ran with tracking enabled
To disable this tracking, opt out of WooCommerce tracking, see WooCommerce Usage Tracking - WooCommerce

* Tweak - [Instant Event Dispatching](https://automatewoo.com/docs/asynchronous-triggers/#reducing-the-asynchronous-delay) is now enabled by default.
* Tweak - Updates all background processed trigger descriptions and greatly improves the descriptions for the Subscription Before Renewal/End triggers.
* Tweak - Abandoned cart timeout minimum is now 5 minutes.
* Fix - Ensure tax labels are hidden when taxes are disabled in WC settings.
* Fix - "order.cross_sells" and "order.related_products" variables will now display Subscription products.
* Fix - Override select2 input field to make it more responsive.
* Fix - Error thrown when non-numeric value encountered for carts preview data.

* Add support for WooCommerce 4.0

* Fix - "Subscription - Item Categories" rule was broken
* Fix - "customer.order_count" variable was always blank for guest customers