Changes coming in V4.3.0

Don't support batch setting of node attributes

Node attributes will no longer be settable like this:

myRotate.set({ axis: {x:1,y:2,z:3}, angle: 45 });

rather, they will always be set individually, eg:

myRotate.setAxis({x:1,y:2,z:3}); 
myRotate.setAngle(45);

This will remove the nasty prototype modification code mentioned in https://github.com/xeolabs/scenejs/issues/432