Changed Image source to use NSImages as the CALayer contents, and improved handling of intermediate CGImage/CGImageSource. Fixes a potential memory leak when image sources are used
Added authorization code flow to the OAuth provider.
Added an API call for plugins to get the list of accounts stored in the keychain for a given service
change to stream service protocol and OutputDestination to support async/delayed fetching of output destination.
Twitch output config allows re-auth to a different account and auto-fetching of the stream key when stream starts.
Outputs now always query the underlying stream service plugin for the destination string.
Output format is now determined by asking the stream service what format to use. Format can be forced via the stream service config dialog.