Force async

[asturur]

Remove the force async logic from fromObject.
All fromObject and clone work in async way.

[sfentress]

Hi @asturur , I've been updating an old project from 1.x to the current version, and the dropping of object.async was never mentioned in any change logs or notes that I could find. It took me a long time to track this change down.

It might have been worth keeping async = true, since all code now acts as it did when async existed and was true. All my code along the lines the following broke.

if (klass.async) {
      activeObject.clone(function (clonedObject) {
        clone = clonedObject;
      }
    } else {
      var clone = activeObject.clone();
    }

But I guess three years on this is a moot point.

[asturur]

When i got to update fabric from 1 to 2 i had still lot to learn around backward compatibility and possible breakage patterns. Not that now i m a genius, but 3 years ago was far worse.

[sfentress]

No problem! And my message above was not particularly helpful either.