Bump version 0.5.2 → 0.6.0

Breaking changes

• AsyncWebSocketSession and WebSocketSession no longer accept the subprotocol parameter. It's automatically set from the response headers (see below).

[!NOTE] If you only use the connect_ws and aconnect_ws functions, you don't need to change anything.

Improvements

• AsyncWebSocketSession and WebSocketSession now accepts the original HTTPX handshake response in parameter. Thanks @WSH032 🎉