Daily-python

Added

- Added dial-out event `dialout-answered`.

Other

- Added new example `demos/audio/async_wav_audio_send.py` that shows how to use
`asyncio` with completion callbacks.

Fixed

- Fixed an issue where `VideoFrame.timestamp_us` was always 0.

Fixed

- Fixed a potential crash caused by audio/video renderers.

- Fixed an issue with audio/video renderers that was preventing renderers to be
removed when participants leave.

Performance

- CPU and memory performance improvements.

Added

- Added `dialin-ready` event.

- Added dial-out events `dialout-connected`, `dialout-stopped`, `dialout-error`
and `dialout-warning`.

Changed

- `CallClient.stop_dialout()` now takes the participant ID of the dial-out
session we want to stop.

Fixed

- Fixed a crash caused by the following completion callbacks:
`CallClient.update_inputs()`, `CallClient.update_publishing()`,
`CallClient.update_subscriptions()`,
`CallClient.update_subscription_profiles()`. The signature of the functions
was wrongly documented as only a single `error` argument is passed.

- Fixed issue when calling `CallClient.update_publishing()` immediately after
`CallClient.update_inputs()`.

Fixed

- Fixed an issue that could cause video and audio renderers not to work if they
were registered after the media track was already being received.