WP Staging Pro 5.7.1

* New: Support for WordPress 5.9
* New: Add filter to change the cache folder for creating & restoring backups #1528
* New: Huge performance improvement for search & replace in cloning / pushing / backup process #1522
* Fix: Call to undefined function human_readable_duration() on backup creation if WP is older than 5.1 #1527 #1525 #1535
* Dev: Add unit tests for Times class
* Dev: Update db_version in SQL dumps to match WordPress 5.9 db version #1539
* Dev: Add command to get db_version from database

* New: Add support for WordPress 5.8.3
* New: Add filter for excluding files during cloning / backup #1494
* New: Add filter for overwriting max execution for database backup restore #1512
* New: Add filter to allow overwriting of the maximum allowed request time to make sure backup restore works for huge files. (19.000.000M database rows) #1510
* Fix: If cloning a multisite subsite into external database, it does not clone / backup wp_users and wp_usermeta #1515
* Fix: Skip tmp single file plugin during backup PUSH copy process #1491
* Fix: Preserve table selection during PUSH and UPDATE even when all backup tables unselected #1488
* Fix: Make sure maximum memory consumption during cloning or backup is never higher than 256MB #1502
* Fix: Use custom implementation of wp_timezone() for backward compatibility to WordPress older than 5.3 #1505
* Fix: Override FileObject::fgets to make them behave exactly from SplFileObject of PHP < 8.0.1 #1506
* Tweak: Show custom uploads folder in tooltip description and explain better that changing a symlink image will also change the image on the production site. #1495

* Hotfix: Fix CLONE PUSH BACKUP on Medium and High CPU Load on WP STAGING PRO 4.1.3. Improve Performance of database backup #1492