3.0.1

Features:

• Render correct preview size for non-camera video sources in PreviewView.
  See #238
• Add an API to set color format in VideoConfig.
  See #235
• Add an API to customize audio and video MediaFormat in AudioConfig and VideoConfig.
• Add an API to set threads, handler and dispatcher for streamers.
• Replace most of internal executor services with coroutines.

Bug fixes:

• Fix usage of the camera in background.
  See #231
• Fix multithreading issues in pipeline, encoding output,...
• Fix fps and dynamic range in camera configure API.
• And other bug fixes.