Should fileCache store file in the cache folder instead of the document folder?

[wcandillon]

I was surprised to see that the option fileCache: true store the images in the document folder. Wouldn't it be more intuitive to put it into the cache folder?

[wkh237]

@wcandillon , yeah I think you're right, but the change will break backward compatibility, we can add this one to v0.11.0 milestone.