- Added plugin log level configuration and stream support, with improved error stream logging.
- Updated ajv to version 6.0.0 and revised the getting‑started guide for correct MongoDB usage.
- Fixed multiple bugs (issues 639, 595, 645, 647, 648, 637, 633).
v0.39.0
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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.