* [connect], [discovery] The crate `librespot-discovery` for discovery in LAN was created. Its functionality was previously part of `librespot-connect`.
* [librespot-audio] Removed `VorbisDecoder`, `VorbisError`, `AudioPacket`, `PassthroughDecoder`, `PassthroughError`, `AudioError`, `AudioDecoder` and the `convert` module from `librespot_audio`. The underlying crates `vorbis`, `librespot-tremor`, `lewton` and `ogg` should be used directly.
* [librespot-playback] Incorrect `PlayerConfig::default().normalisation_threshold` caused distortion when using dynamic volume normalisation downstream in librespot-connect was deprecated in favor of the `librespot-discovery` crate.