310 Added MediaManager method to change local video property programmatically - Hi!
I've added this method to allow `WebRTCAdaptor` consumers to set `localVideo` whenever they wish.
Cheers! 😉
308 Added new constructor parameters to pass video element instead of video element id - In Vue app context document.getElementById('anything') returns null and beacuse of that `WebsocketAdaptor` becomes unusable.
This PR fixes this by allowing to pass `localVideoElement` and `remoteVideoElement` parameters to `WebsocketAdaptor` constructor.