This leads to code that is easier to understand and runs
faster thanks to GDScript's typed instructions.
The untyped declaration warning is now enabled on all projects
where type hints were added. All projects currently run without
any untyped declration warnings.
Dodge the Creeps and Squash the Creeps demos intentionally don't
use type hints to match the documentation, where type hints haven't
been adopted yet (given its beginner focus).
The signaling server protocol has been rewritten to use JSON format to
be more readable.
Lobbies now support both mesh and client/server modes (selected during
creation).
The client/server mode uses the SceneMultiplayer relay mode as
implemented in beta4.
The demo now uses an RPC for pinging, and connects to the MultiplayerAPI
instead of using the raw MultiplayerPeer.
