MessagePackObject does not support decimal/float conversion

[itaign]

Is there a reason that MessagePackObject does not support AsDecimal/AsFloat conversion like it does for the rest of the value types?

[yfakariya]

Good question.

1. There is AsSingle instead of AsFloat because float is C# keyword rather than CLS compliant type name.
2. MessagePackObject represents one of types of native msgpack types (https://github.com/msgpack/msgpack/blob/master/spec.md). decimal is not "native" type of message pack.