toml table unnesting

1-nested-tables.toml

[[products]]
name = "potato"
available = true
[products.shelf]
row = 7
column = 12

[[products]]
name = "tomato"
available = true
shelf = { row = 2, column = 15 }

2-nested-tables.json

{
  "products": [
    {
      "available": true,
      "name": "potato",
      "shelf": {
        "column": 12,
        "row": 7
      }
    },
    {
      "available": true,
      "name": "tomato",
      "shelf": {
        "column": 15,
        "row": 2
      }
    }
  ]
}