* Fix up typescript of checkout filters
* Clear cached values when adding new filters
* Allow href on WPButton type
* Specify generic type of getSetting for checkout page link
* Apply filters to Proceed to Checkout button
* Add unit tests for proceed to checkout button and link filters
* Make cart extend a plain object
* Pass cart in args for proceed to checkout filters
* Add documentation for proceed to checkout filters
* Add unit test for multiple filter registration
* Change word to bump stuck GitHub actions
* Apply consistent casing to test names