Switcher now uses Lua actors for communication. Switcher must be running on all characters to support display of information and switching. You can use the broadcast mechanism of your choice to start the program on your characters, e.g.
/bcaa //lua run switcher
Or, to have the program loaded automatically on all characters add this command to ingame.cfg:
/lua run switcher
Some basic character information is now displayed if you hover over a name. Switching functionality is largely unchanged, but you can now rotate through characters using buttons or console commands / hotbuttons.