Fix pydantic Unions type conversion

[danixeee]

Description (e.g. "Related to ...", etc.)

Closes #159.

The reason I couldn't do this:

class JsonRPCRequestMessage(JsonRpcMessage):
    """A class that represents json rpc request message."""
    id: Union[int,str]
    method: str
    params: Any

is that in the case of Union, pydantic tries to convert the input to the first valid type, so, if you pass id='1', an object will have a field of type int id=1...

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[muffinmad]

Is it possible to make release for this change?

[danixeee]

Sure, once we merge #163 I will do the point release.

[danixeee]

@muffinmad v0.10.2 is released.