set uses cloneVal

[qbolec]

Is there a good reason for cloning parameters passed to Model.set?
This makes it quite difficult to assign native types like MediaStream without loosing their original behaviour.

[GCheung55]

That's a good question. I went I search for the answer by following the trail of commits but came up empty.

I don't remember the exact reason but it may be more flexible without cloning. Which means the dev is responsible for dereferencing arrays and objects.