Support simple hierarchical JSON

[ad-si]

Since probably most JSON files which are valuable enough to be migrated to a database contain nested arrays, this feels like an absolute must have feature.

E.g. following JSON array can't be imported properly:

[
  {
    "date": "",
    "brand": "Generic Brand",
    "title": "Some Product",
    "version": "170",
    "website": "https://products.com/234723",
    "reviews": [
      {
        "url": "https://reviews.com/1",
        "lang": "en"
      }
    ]
  },
  {
    "date": "2021",
    "brand": "Other Brand",
    "title": "Thing",
    "website": "https://things.com/1232",
    "price": "70 €",
    "reviews": [
      {
        "url": "https://reviews.com/2",
        "lang": "en"
      }
    ]
  }
]

[mkeskes]

I vote for this one!
One approach could be to flatten (r.f. https://github.com/amirziai/flatten) the nested json document as a preprocessing step.

[thombashi]

Poll: #89