Multiplayer improvements; Updated project folder format; Lots of bug fixes.
The change is that the host can disconnect from the signalling server and still communicate with peers. This does not change the fact that if the host disconnects it ends the game. (Host migration is very complicated and I suspect it would be error prone too - you could probably give it a go with events anyway and get the peers to rejoin a new room)
Ashley is right, it's not easy to move to another one... But I have a tip for you, now with the condition "if the host leaves" we can recover the layout by saving the current data and whoever is there and flags as a host will continue the game . In my case in the game pixel bombarda (in scirra arcade) I save the terrain data in a string.