message: Add Google Hangouts to the graveyard. Close
diff: "name": "Google Cloud Messaging (GCM)",
  "type": "service"
  }
  + {
  + "dateClose": "2019-10-31",
  + "dateOpen": "2013-03-15",
  + "description": "Google Hangouts was a communication platform which included messages, video chat, and VOIP features. Execution date is tentative.",
  + "link": "https://arstechnica.com/gadgets/2019/01/the-great-google-hangouts-shutdown-begins-october-2019/",
  + "name": "Google Hangouts",
  + "type": "service"
  + }
  ]
  