curl http://localhost:3000/todos
   [
     {
       "id": 1,
       "done": false,
       "task": "finish tutorial 0",
       "due": null
     },
     {
       "id": 2,
       "done": false,
       "task": "pat self on back",
       "due": null
     }]
   curl http://localhost:3000/todos -X POST \\
        -H "Content-Type: application/json" \\
        -d '{"task": "do bad thing"}'
   {
     "hint": null,
     "details": null,
     "code": "42501",
     "message": "permission denied for relation todos"
   }
   GET /films?select=title,directors(id,last_name) HTTP/1.1
    [
     { "title": "Workers Leaving The Lumière Factory In Lyon",
       "directors": {
         "id": 2,
         "last_name": "Lumière"
       }
     },
     { "title": "The Dickson Experimental Sound Film",
       "directors": {
         "id": 1,
         "last_name": "Dickson"
       }
     },
     { "title": "The Haunted Castle",
       "directors": {
         "id": 3,
         "last_name": "Méliès"
       }
   }]