v34.12.0-rc.0

🦖 Deprecations

• Deprecate MatrixClient.getKeyBackupVersion (#4505). Contributed by @florianduros.
• Deprecate unused callbacks in CryptoCallbacks (#4501). Contributed by @florianduros.

✨ Features

• Handle M_MAX_DELAY_EXCEEDED errors (#4511). Contributed by @AndrewFerr.
• Allow configuration of MatrixRTC timers when calling joinRoomSession() (#4510). Contributed by @hughns.
• When state says you've left ongoing call, rejoin (#4342). Contributed by @AndrewFerr.
• Remove redundant type arguments in function call (#4507). Contributed by @AndrewFerr.
• MatrixRTCSession: handle rate limit errors (#4494). Contributed by @AndrewFerr.
• Send/receive error details with widgets (#4492). Contributed by @AndrewFerr.
• Capture HTTP error response headers & handle Retry-After header (MSC4041) (#4471). Contributed by @AndrewFerr.
• Add RoomWidgetClient.sendToDeviceViaWidgetApi() (#4475). Contributed by @hughns.