WooCommerce API Manager 3.2.4

* Fix: Remove esc_attr() from $_POST sanitization on line 1257 of wc-am-product-admin.php due to "Array to string conversion" PHP Warning.

* Fix: <br> tag displayed in My Account > API Keys. Updated templates/myaccount/api-keys.php.

* New: Added 'next_payment' date to the Status API endpoint.

* Tweak: Further optimize when adding an API Key activation.
* Fix: Background processing to update all customer purchased API Key activations when the product activation limit is changed.
* Dev: Removed unused Amazon S3 function format_secure_s3_url() that was used to create AWS Signature Version 3 URL introduced in version 1.3.2. AWS Signature Version 4 has been in use since version 2.1.

* Fix: Cronjob cleanup of expired API Key activations queried a database column using a misspelled name.
* New: Added if the Homepage is cachable to the WooCommerce > Status > WooCommmerce API Manager status report.

* Fix: API Key activations not displayed when Product Order API Key hidden in api-keys.php template.
* Fix: Product ID column table header text wrapped when it should not be in the api-keys.php template.
* Fix: Release Date column table header text wrapped when it should not be in the api-downloads.php template.
* Update: Updated templates/myaccount/api-keys.php.
* Update: Updated templates/myaccount/api-downloads.php.php.
* New: Settings page link to API Manager > API Customers submenu.

* Fix: Logic bug in is_time_expired(). Caused API Manager Subscriptions with an access expires zero value, meaning infinite/lifetime, to be deleted during cleanup.
* Tweak: Replace use of is_int() with is_numeric().
* Tweak: Deprecate is_access_expired() which was a wrapper for is_time_expired().

* Tweak: Clear cache when order updated.
* Tweak: Clear database cache faster when API Resource no longer exists.

Fix: Typo on API Resources meta box Parent Order link had two # # instead of one #.

* New: If an API Resource is a line item on a WC Subscriptions renewal order, a URL link is displayed leading to the parent order where API Resources are displayed.
* Dev: Added the WC_AM_ENABLE_CACHE constant. To disable caching add define( 'WC_AM_ENABLE_CACHE', false ); to wp-config.php.
* Dev: Template code optimizations.
- api-keys.php
- api-downloads.php