ZippyJSON considers the keys non-ascii

words.json

{
  "version": 1,
  "items": [
    {
      "id": "en_cat",
      "name": "cat",
      "lang": "en",
      "defs": [
        {
          "id": "en_cat_1",
          "def": "A cat is a domestic animal of the feline family.",
          "trans": {
            "fr": ["fr_chat_1"],
            "ru": ["ru_ко́шка_1"]
          },
          "ex": [
            "My cat is lazy and never hunts mice.",
            "Tigers are just very big cats."
          ]
        }
      ]
    },
    {
      "id": "fr_chat",
      "name": "chat",
      "lang": "fr",
      "defs": [
        {
          "id": "fr_chat_1",
          "def": "Le chat est un animal domestique de la famille des félins.",
          "trans": {
            "en": ["en_cat_1"],
            "ru": ["ru_ко́шка_1"]
          },
          "ex": [
            "Mon chat est fainéant et ne chasse jamais les souris.",
            "Les tigres sont simplement de gros chats."
          ]
        }
      ]
    },
    {
      "id": "ru_ко́шка",
      "name": "ко́шка",
      "lang": "ru",
      "defs": [
        {
          "id": "ru_ко́шка_1",
          "def": "",
          "trans": {
            "en": ["en_cat_1"],
            "fr": ["fr_chat_1"]
          },
          "ex": []
        }
      ]
    },
    {
      "id": "ru_кот",
      "name": "кот",
      "lang": "ru",
      "defs": [
        {
          "id": "ru_кот_1",
          "def": "",
          "trans": {
            "en": ["en_cat_1"],
            "fr": ["fr_chat_1"]
          },
          "ex": []
        }
      ]
    }
  ]
}