Changes to Sends a command to an item.

added the new required request property value

the request's body type changed from string to object

added the new optional header request parameter X-OpenHAB-Source

added the new optional query request parameter source

added the media type application/json to the request body

removed the media type application/json from the request body

deleted the header request parameter X-OpenHAB-Source

deleted the query request parameter source