Changelog:
=============
- Add support for running on WebAssembly / Emscripten via Pyodide, using a
JavaScript fetch-based transport defined in httpx2-jsfetch.
- Add max_event_size to cap SSE event buffering.
- Add RFC 9110 status code constants.
- Add support for Python 3.15.
- Improve SSE chunk buffering performance.
- Skip cookie extraction for responses without Set-Cookie headers.
- Return str | None instead of Any from Headers.get.
- Enforce the WebSocket max message size across fragmented messages.
- Ignore unsolicited and duplicate WebSocket Pong frames.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>