This release replaces the underlying HTTP client used on the `TestClient` (`requests` :arrow_right: `httpx`), and as those clients [differ _a bit_ on their API](https://www.python-httpx.org/compatibility/), your test suite will likely break. To make the migration smoother, you can use the [`bump-testclient`](https://github.com/Kludex/bump-testclient) tool.
Changed
* Replace `requests` with `httpx` in `TestClient` [1376](https://github.com/encode/starlette/pull/1376).
Added
* Add `WebSocketException` and support for WebSocket exception handlers [1263](https://github.com/encode/starlette/pull/1263).
* Add `middleware` parameter to `Mount` class [1649](https://github.com/encode/starlette/pull/1649).
* Officially support Python 3.11 [1863](https://github.com/encode/starlette/pull/1863).
* Implement `__repr__` for route classes [1864](https://github.com/encode/starlette/pull/1864).
Fixed
* Fix bug on which `BackgroundTasks` were cancelled when using `BaseHTTPMiddleware` and client disconnected [1715](https://github.com/encode/starlette/pull/1715).