Scroll zoom doesn't work in safari

Minimal example that works in chrome but not in safari:
```
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <script src="https://cdn.plot.ly/plotly-3.0.1.min.js"></script>
</head>
<body>
  <div id="choropleth"></div>

  <script>
    Plotly.newPlot('choropleth', [{type: 'choropleth'}] );
  </script>
</body>
</html>
```