How to use the colaboratative editor:

1. Open terminal window, cd to Server directory, run npm install && npm run server
2. Open terminal window, cd to Client directory, run npm install && npm run dev. Copy the address after Local:
3. Open multiple browser tabs/windows on that address. In each browser console, optionally type test_join("any_id") with any session ID.
4. Edit in one textbox and see if the change is reflected real-time in other tabs/windows of same session ID.
5. In Browser console, type test_quit() to disconnect from service.