Version: 2.5.2
* Improvement: modernize statistics page and graph optics
* Improvement: update Arabic, Danish and German translations
* Improvement: add Arabic translation
* Fix: undefined variable wpdb on multisite installation when network deactivating the plugin
* add additional bots that should not trigger tracking (`FlyingPress`, `WP Rocket/preload`, `Sogou web spider`, `Seekport Crawler`, `Barkrowler`)
* check for WP_Filesystem_Base before trying to use the filesystem
* improve activating/deactivating debugging option and check if file writable
* fix disabled tracking on AMP pages
* add possible to import and export options
* fix JS type error in click-tracking when closing an ad