In a multi-player game, it would be nice if the game displayed the hosts IP somewhere in the game setup window so he could give it to others who wish to join. Thanks!

Here comes the /url command, introduced in v3.6.29.0.
From the ReadMe:

In the Host screen, entering the command "/u" or "/url" will now copy a wa://address-of-host URL into the clipboard. Additional parameters are automatically included if necessary, including Game ID, Scheme, and Password. Other players will be able to join your game directly by clicking this pasted URL, even if you hosted from WormNET.