- Switch TestClient to HTTPX (Starlette 0.21.0) with a migration helper, introducing potential breaking changes in test code.
- Re‑export Starlette's WebSocketException and relax "all" extras dependencies, adding HTTPX as an extra.
- Update docs (CORS, Help FastAPI) and add multiple language translations; internal linting now uses Ruff.
0.87.0
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