Dispose of Subscriptions

[boshinski]

In your chapter on the EventAggregator, you might want to dispose of the subscriptions in the detached method. At least that is what I picked up in a tutorial by Rob Eisenberg. So maybe something like:

attached() {
    this.subscribe1 = this.ea.subscribe('custom-element-loaded', obj => {
     console.log(obj.myProp);
     console.log(obj.anotherProp);
   });
}
detached() {
   this.subscribe1.dispose();
}

[Vheissu]

Sorry for the delay on this one, been focusing on new content and less-so on fixes. This is going out probably tonight.