- Added eager translation loading, per‑thread CPU timing for ActiveSupport notifications, mountable‑engine route helpers in system tests, and Sidekiq job‑class exposure for Active Job.
- Fixed numerous bugs: shared connection pool for primary/replica tests, preloader after‑initialize edge case, collection‑callback abort handling, multi‑database migrate connection restoration, multithreaded AcceptanceValidator, ActionMail...
- Deprecated the old `where.not` NOR behavior to correctly warn when used with relation queries.
6.0.2
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Active Storage disables libvips unfuzzed image loaders/savers, causing Vips::Error for BMP, ICO, PSD, SVG, JPEG XL, JPEG 2000, Netpbm and other formats – a breaking change for apps using those types
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