* Use Combine to report AudioRecorder state changes * AudioRecorder is now using AVAudioEngine instead of AVAudioRecorder * Stop recording when audio configuration changes * AudioRecorder error handling * UnitTests * Use Accelerate to calculate RMS
* Use Combine to report AudioRecorder state changes * AudioRecorder is now using AVAudioEngine instead of AVAudioRecorder * Stop recording when audio configuration changes * AudioRecorder error handling * UnitTests * Use Accelerate to calculate RMS