* Update-WooCommerce compatibility version to 6.1.0
* Update-Wordpress compatibility version to 5.8.3

* Sensei LMS: Version bump to 3.15.1 https://raw.githubusercontent.com/Automattic/sensei/version/3.15.1/changelog.txt

* Fix-Fixed warnings triggered by using deprecated `is_ajax`. Replaced with `wp_doing_ajax` for WooCommerce v6.1+.
* Fix-Fixed issue that prevented component variations from being updated when Scenarios were used.

* Feature-Generate files for the product catalogs.
* Tweak-Process the products of a catalog in batches.
* Tweak-Reduced the load time of the product catalog feeds.
* Tweak-Improved performance when exporting a product catalog to an XML or CSV file.
* Tweak-Redirect to the settings page after creating a product catalog.
* Tweak-Product catalogs are no longer sortable in the settings table.
* Tweak-Delete a product catalog on the settings page without the need to save the settings.
* Tweak-Replaced deprecated jQuery functions.
* Tweak-Clear cache after removing the plugin data on uninstalling.
* Tweak-Updated documentation links.
* Tweak-Tested compatibility with WC 6.1.
* Tweak-Tested compatibility with WP 5.9.
* Dev-Allow querying products from a catalog.
* Dev-Store the product catalogs in the WP Posts table as a Custom Post Type.
* Dev-Use a WC background process to handle the plugin updates.
* Dev-Use a trait instead of a class for implementing the Singleton pattern.
* Dev-Dropped deprecated plugin code up to version 3.6.
* Dev-Dropped classes `WP_Async_Request` and `WP_Background_Process` from core.
* Dev-Updated the minimum requirements to WC 3.5, WP 4.7, and PHP 5.4.

* Fix: Prevent fatal error when too few arguments passed to widget_title filter. PR#4302
* Dev: Update subscriptions-core to 1.6.2. PR#4302

* Fix-Jquery deprecated code.
* Tweak-Jquery 3.0 compatibility.
* Tweak-Improve performance of scheduled action that completes orders after product is released.
* Fix-Use WooCommerce order details template instead of a custom one.
* Fix-“Your previous cart was emptied” message does not show when using ajax cart.
* Fix-Error message on Pre-Orders list when a product pre-order is disabled.
* Fix-Broken email links when sending links via WooCommerce > Pre-Orders > Actions.
* Tweak-Pre-Orders table under My Account > Pre Orders responsiveness
* Fix-Stock inventory is not replenished when a pre-order that’s set to charge “Upon Release” is canceled.
* Tweak-Pre-load product when clicking on “Use the actions menu” to change the release date.
* Add-Allow to search for Pre orders only and Regular orders only on WooCommerce > Orders.
* Fix-Refunded orders are counted as Net Sales in WC > Reports when Pre-Orders is active.
* Tweak-Prevent listing pre-orders when they must be paid upfront and the payment fails.
* Tweak-Rename the .pot file so it matches the registered text domain.
* Add-Add fees to order when creating via admin.
* Fix-Reduce inventory for 100% coupon payments.
* Fix-Complete the product’s release process when the release date is updated to the past and pre-orders exist.
* Tweak-Make the notice for when the cart contains a pre-order be of the ‘error’ type.
* Add-Add an option to enable product Pre-Order automatically when stock hits zero.
* Fix-Email message when order is on-hold.
* Tweak-Prevent multiple pre-order products to be added on order created via admin.
* Fix-“Release Date Changed” email mentions it changed to a future date when it’s set to the past.
* Tweak-Pre-Orders status counter performance improvement