set_non_persistent() returns variable instead of boolean

Hello,
first of all, thank you for this great plugin. However, I believe I found a bug in APCu Manager 4.2.0.

The method WP_Object_Cache->set_non_persistent() in
../apcu-manager/includes/api/object-class.php at line 1176 is supposed to return a boolean value, but it currently returns the variable instead.

This leads to PHP errors when combined with WooCommerce (from version 9.9), because the value is passed down to the wp_cache_set() function in /wp-content/object-cache.php:

Uncaught TypeError: Automattic\WooCommerce\Internal\Admin\Logging\FileV2\FileController::invalidate_cache(): Return value must be of type bool, string returned in /html/wordpress/wp-content/plugins/woocommerce/src/Internal/Admin/Logging/FileV2/FileController.php:678    

Uncaught TypeError: Automattic\WooCommerce\Caches\OrderCountCache::set(): Return value must be of type bool, int returned in /html/wordpress/wp-content/plugins/woocommerce/src/Caches/OrderCountCache.php:89 

As a test, I modified line 1180 in
…/apcu-manager/includes/api/object-class.php as follows:

$this->non_persistent_cache[ $key ] = $var;
return true;

This change removes the PHP errors.

It would be great if you could take a look at this issue and maybe include a fix in the next update.

Many thanks in advance!