• Rollback of cache keys for backup_feature_flags and feature_flags to use "_" instead of ":" to make them PSR6 compliant.
• Added the API key in the cache key for analytics to allow multiple environment cache keys to be kept in the same cache.

• Created the public register() method for Event Tracking.
• Added flexibility to the Cache implementation to allow Redis adapter properly.
• Analytics cache and backup cache now use the same cache implementation as the regular feature flag cache instead of the local filesystem.

• Automatic person tracking was removed due to problems with some custom UserContextProvider implementations.
• Created a new public method trackPerson() to track the current UserContext manually.

• Optimized Event Tracking API calls so no API call is done if no new events or people are tracked.
• Updated documentation with Tracking basic usage examples.

Added support to Track Events and People using the newly introduced track() method.

• Added support for the "Is contained in" string operator.

• Moved cache logic from laminas-cache to symfony/cache.

• Added the Analytics functionality, allowing users to see the detailed usage of every Feature Flag in their back office on the platform.

Fixed a collision between backup file TTL and cache file TTL.