Add on-slide and document attributes

[knownasilya]

Basically {{#carousel-container on-slide=(action 'slideChanged')}} where the action would look like this:

slideChanged(options) {
  console.log(options);
  // => { index: 1, previousIndex: 0, direction: 'right' }
}

[selvagsz]

@knownasilya welcome addition 👍

Question
I have the practice of using hyphenated actions for the components like on-save, on-cancel. What do you prefer on-slide or onslide ?

[knownasilya]

We can use the - for consistency since the other attribute has one.

[selvagsz]

@knownasilya Thanks!