Support for several controllers

• This version adds support for several controllers playing different medias. This makes it possible to play several medias at the same time
• The public Letterbox interface has been improved to support such use cases, and should be pretty stable right now

First alpha

This is the first alpha for the SRG SSRG Letterbox component. This version is a pre-prelease version and is not production ready, but can be used for early integration. The public interface will change, but migrating to upcoming pre-release versions should be easy.

The following features are currently available:

• Media service for media playback throughout the application
• Support for audio and video playback. On-demand streams only are officially supported. Live and DVR streams can be played, but the user interface is not be fully ready yet
• Control center and lock screen integration
• Airplay support with no code required
• Optional picture and picture integration