WooCommerce Memberships 1.26.5

* Feature - Add support for the WordPress REST API with new read-only endpoints for user memberships and plans!
* Feature - Add support for WooCommerce webhooks to inform remote services about user memberships events or membership plans changes
* Feature - Add a setup wizard for onboarding new users when they install the plugin for the first time
* Fix - Ensure initial default settings are correctly set in new installations
* Fix - When importing a membership to update an existing one, an empty `membership_expiration` field should turn the membership as unlimited
* Fix - Do not completely hide items from feeds when they are restricted if the restriction mode is set to "Hide content only"
* Fix - Properly restrict enclosures from RSS feeds when "Hide content only" is the restriction mode
* Misc - Drop support for PHP 5.2: PHP 5.3 is now the minimum required version
* Misc - Update bundled Action Scheduler library to version 2.0.0

* Misc - Remove unnecessary vendor packages taking up space in the plugin

* Tweak - Append the ID number to the plan or content names shown in the membership plan rule panels
* Tweak - Improve the batch processing performance when granting user access to a plan retroactively
* Fix - When following a membership renewal link fails, make sure the user doesn't see the error message again after successful login
* Fix - If WordPress content exists with the same slug as the members area page, make sure there's no conflict between them to prevent the content from being redirected to the home page
* Fix - Ensure that a membership can be created when a guest customer checks out using WooCommerce One Page Checkout by forcing sign up