The upper line in callout types disappeared?

[existe-deja]

This is not the same rendering between the thumbnail and the demo blocks.

The thumbnail from http://d3-annotation.susielu.com/#examples

The render from https://bl.ocks.org/susielu/a464c24d8b42f0c4d9fafe7b48e9e60a

I also don't achieve to display the line in version 2.0.0 from npm.

[existe-deja]

Ok, I found the bug.
The stroke css property for .note-line elements is not applied by default.

[existe-deja]

duplicate of #40