How can I visualize MultiGraph?

Hi,

I have tried to visualize simple graph. Everything looks good. However, how can I visualize multigraph?

Here is my sample code

```

Sample

var G = new jsnx.MultiGraph();

G.addNodesFrom([1,2,3]);
G.addEdgesFrom([[1,3],[1,3],[1,2],[1,2],[2,3],[2,3]]);
console.log(G.edges()); // I can see 6 edges printed on console
jsnx.draw(G, {
element: '#canvas',
withLabels: true,
nodeStyle: {
fill: function(d) {
return d.data.color;
}
},
labelStyle: {fill: 'white'},
stickyDrag: true
});

```

And the result is


How to draw multiple parallel edges between two nodes?

Any help will be appreciated.