[Suggestion] Add multiplayer to the Editor

[winglessraven 1]

As per the title - I'd love to see multiplayer worked into the editor.  It would be great to collaborate with my friends when creating content, so much better to bounce ideas off each other. 

[vengz 4]

Yeah, it will be better and easier to make a mode complete.

For making a map complete and done it can be easier and faster and more ideas.