message: Update graveyard.json
  Improve date messaging.
diff: {
  "dateClose": "2020-12-31",
  "dateOpen": "2013-03-15",
  - "description": "Google Hangouts was a communication platform which included messages, video chat, and VOIP features. Execution date is tentative.",
  + "description": "Google Hangouts was a communication platform which included messages, video chat, and VOIP features. Execution scheduled \"late 2020\".",
  "link": "https://arstechnica.com/gadgets/2019/01/the-great-google-hangouts-shutdown-begins-october-2019/",
  "name": "Google Hangouts",
  "type": "service"
  