- Removed many deprecated ActiveSupport and ActiveRecord APIs (e.g., notification children/parent, deprecation helpers, SafeBuffer clone, config options, cache format version), marking a breaking change for existing code.
- Introduced new features such as duration and hexBinary support in XmlMini, IPAddr prefix serialization, default: support for CurrentAttributes, recursive CTEs, schema :if_not_exists / :force options, and new Active Support notification e...
- Fixed critical bugs including correct cache write return values, MemoryStore race conditions, Time/Date.now behavior after time travel, logger duplication handling, and added test assertion warnings.