std.data.json formal review

[Walter Bright via Digitalmars-d]

On 8/12/2015 12:44 AM, Sönke Ludwig wrote:
> That's where Decimal would come in. There is some code for that commented out,
> but I really didn't want to add it without a standard Phobos implementation. But
> I wouldn't say that this is really an argument against BigInt, maybe more one
> for implementing a Decimal type.

Make the type for storing a Number be a template parameter.