- Added new type decorations and extended the content‑type parser support
- Fixed bugs: request hanging in setErrorHandler, missing file option in FastifyLoggerOptions, and generic constraint type issues
- Updated documentation: added Fastify Recaptcha guide, refreshed Getting Started.md, and corrected route generic example
v3.20.0
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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.