W3 Total Cache Pro 2.8.8

Fix: Redis Cache: Removed exception on warnings
Fix: Compatibility check for WP_CACHE
Fix: Flush all cache cache except Cloudflare button
Fix: License terms update notice escaping
Fix: Feature Showcase: Image Service activate button
Security: Updated guzzlehttp/guzzle to 6.5.8

Security: PHPCS and WPCS updates
Security: Updated guzzlehttp/guzzle to 6.5.6
Security: Updated guzzlehttp/psr7 to 1.8.5
Fix: Cloudflare flush all cache
Fix: Access log test
Fix: Better handling for PHP 5.6
Fix: Convert Redis warnings to exceptions
Fix: WordPress 5.5 image lazy loading
Fix: Infinite loop when using database cluster configuration
Fix: Database cluster logic
Fix: FTP credentials form
Fix: Preview deploy button
Fix: Image Service links in multisite network admin
Fix: Enable Image Service settings changes in multisite blog/sub sites
Enhancement: Updated Cloudflare settings to allow a global API key or token
Enhancement: Added Cloudflare CDN public objects option to settings
Enhancement: Added timeout settings for Redis
Enhancement: Added TLS/SSL certificate verification option for Redis
Enhancement: Added Image Service visibility option
Enhancement: Updated Image Service limit notification
Enhancement: Better handling of trailing slash URLs
Update: Adjusted lightbox for accessibility
Update: Removed deprecated opcache flush

* Fix: Cloudflare: Removed use of the retired ip_lkup V1 endpoint
* Fix: Prevent error in some environments using non-direct filesystems
* Fix: Added better checking for some filesystem actions
* Fix: AWS CloudFront: Reverted async change for cache invalidation to honor promises
* Enhancement: Added option to exclude minified JS files from being processed by Rocket Loader
* Enhancement: Improved handling of Image Service rate-limiting and error messages