Fix default binary encoding not found for Variant

[Teo230]

• The constructExtensionObject can assign the incoming data to the new extensionobject variable without using the Object.assign method
• By using the Variant class on arg.value, the method throw exception Cannot find encodingDefaultBinary for this object : Variant. To solve this just pass the ExtensionObject directly

[mikakaraila]

This is excellent to get extension object problems fixed finally.

[Teo230]

This is excellent to get extension object problems fixed finally.

Can you provide the new release on npm? 🙂

[mikakaraila]

Sorry busy at work, I will check late today...

[mikakaraila]

New version now available.