Values of type Range are iterated over upon serialization

[cgranade]

Describe the bug
When serializing values of type Range as returned by a function or operation, the serializer expands the Range into an array of its values:

This is confirmed by looking at the raw JSON saved to the notebook:

   "outputs": [
    {
     "data": {
      "application/json": "[0,1,2,3,4]",
      "text/html": [
       "<ul><li>0</li><li>1</li><li>2</li><li>3</li><li>4</li></ul>"
      ],
      "text/plain": [
       "0, 1, 2, 3, 4"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ]

This makes it impossible to directly call a function or operation that expects a Range as its input from the Python client.

Expected behavior
Range should serialize and deserialize into a JSON schema that is distinct from the JSON schema for Int[].

[anpaz]

Range implements IEnumerable, which is why it gets its items serialized. This should be fixed if we add the JsonObject to the class Range , but that would be in qsharp-runtime

[cgranade]

Good point, I'll move the issue to the runtime repo, then, and pick it up from there. Thanks!