updateChart logic appears to be not allowing re-render

[mrwadepro]

I think I found a bug here in index.js

if (this.chartist) {
      this.chartist.update(data, options, responsiveOptions);
    } else {
      this.chartist = new Chartist[type](this.chart, data, options, responsiveOptions);
...

This bit of code doesn't allow the chart type to change if the prop actually changes. I spent awhile trying to figure out why if I change the type the chart doesn't re-render. I removed the this.chartist.update(data, options, responsiveOptions); part along with the logic and it fixed it.