rails/activesupport/CHANGELOG.md

• Raises an ArgumentError when the first argument of ActiveSupport::Notification.subscribe is invalid.

  Vipul A M

• HashWithIndifferentAccess#deep_transform_keys now returns a HashWithIndifferentAccess instead of a Hash.

  Nathaniel Woodthorpe

• consume dalli’s cache_nils configuration as ActiveSupport::Cache's skip_nil when using MemCacheStore.

  Ritikesh G

• add RedisCacheStore#stats method similar to MemCacheStore#stats. Calls redis#info internally.

  Ritikesh G

Please check 6-1-stable for previous changes.