CanJS proposed event changes

gistfile1.js

var obs = new can.Observe({})

obs.bind('change', func) // Fires once (then, once post timeout) -> just event?
obs.delegate('*','change',func) // Fires once (then, once post timeout) -> just event?

obs.bind('changes', func) // Fires twice (then, once post timeout) -> ev, attr, how, newVal, oldVal
obs.delegate('*','changes', func) // Fires twice (then, once post timeout) -> ev, attr, how, newVal, oldVal

// Should we differentiate between change and changeds?
obs.bind('changed', func); // Fires three times post timeout -> ev, attr, how, newVal, oldVal
obs.delegate('*', 'changed', func); // Fires three times post timeout -> ev, attr, how, newVal, oldVal

var t = can.transaction()
obs.attr({first: "Taylor", last: "Swift"});
setTimeout(function(){
  obs.attr("favorite", true);
  t();
},1000);