non-finite numbers are written as invalid JSON

[Tillerino]

So it appears that non-finite numbers produce invalid JSON, as far as I can tell. For example, the following round trip crashes:

String json = JsonWriter.string().value(Double.NaN).done();
JsonReader.from(json).doubleVal();

The reason is that the produced JSON is simply NaN. I think it should be "NaN" - this is at least what Jackson does. Either that, or the parser should be able to read unquoted non-finite values.

Not a blocker for me, but I thought you would want to know.