- Added first‑class handler‑level timeout support, async route‑hook handling, and Pino v9/v10 compatibility; fixed shared routerOptions mutation.
- Updated extensive documentation and security references, including host security warnings, insecureHTTPParser threat model, and shutdown lifecycle guidance.
- Applied assorted bug fixes (e.g., format placeholder removal) and cleaned up CI workflows and code style.
v5.8.0
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Fix for two Fastify security advisories (GHSA‑w2qp‑rph6‑63g4 and GHSA‑3m5p‑2c4r‑xxw2).
Added per‑route logging for Google Cloud Functions and introduced `Reply.prototype.mediaType` for easier content‑type handling.
Fixed trailer state clearing when removing all trailers and corrected requestCompleted handling to use null instead of undefined.