Once `Span<T>` is available (#297), use `Utf8Parser` to deserialize `int`, etc. It's mentioned in passing in [this article](https://msdn.microsoft.com/en-us/magazine/mt814808.aspx) and is (at the time of writing) implemented [here](https://github.com/dotnet/corefx/tree/master/src/System.Memory/src/System/Buffers/Text/Utf8Parser).
Once
Span<T>is available (#297), useUtf8Parserto deserializeint, etc.It's mentioned in passing in this article and is (at the time of writing) implemented here.