readOnly validation causing backwards incompatibility

[simonjpartridge]

The addition of validation for readOnly #599 has caused issues for our existing clients when calling our API.

Especially in the flow where a user does a put update, they end up incidentally sending readOnly parameters to the API.

x = GetX
x.Value = "updated"
UpdateX(x)

Ideally I think the readOnly validation should be optional with a configuration option.

Would you be open to this change if we were to raise a PR to implement it?

[fenollp]

Sure! Send away :)

[gczobel]

It's someone working right now on this? @simonjpartridge I can take this if you are not actively working on it.

[orshlom]

Hey @fenollp, please review the PR when you got the time 😏

I have made writeOnly properties validation configurable as well.