* Tweak - Introduced basic telemetry to collect data on extension usage when tracking is enabled.
* Fix - Fixed a fatal error that was triggered when invalidating order cache.
* Fix - Fixed a fatal error that was triggered when adding a Composite with invalid configuration to a manually created order.
* Important - PHP 7.0 is now required.
* Fix - Fixed a fatal error that was triggered by the Cart/Checkout blocks integration when the global cart object was null.
* Important - WooCommerce version 3.9+ is now required.
* Fix - Include minified frontend script files for the new Cart and Checkout blocks integration.
