[Feature Request] Tween arrays and other things

[marcusx2]

Currently, you can not tween arrays. For example, the following code won't work

var from = {arr : [0, 0]};
this.app.tween(from).to({ar: [1, 1]}, 1, pc.SineOut);

Instead, you have to do

var from = {val1: 0,val2: 0};
this.app.tween(from).to({val1: 1, val2: 1}, 1, pc.SineOut);

The following doesn't work either

var from = {
    myVec1: new pc.Vec4(1, 0.5, 1, 0.5),
    myVec2: new pc.Vec4(1, 0.5, 1, 0.5),
};

It seems that playcanvas-tween can only tween properties that are numbers when using objects. Anything more complex won't work.