[BUG]: pointLabels overlap tick labels for radar chart with large font size

This is both a bug and a feature request.

Expected Behavior

It should be possible to provent the ticks and pointLabels from colliding. A way to do this without breaking backwards compatibility would be to set padding at options.scale.pointLabels.padding.

Current Behavior

The pointLabels and tick labels collide.

Possible Solution

Add padding when calling measureLabelSize in scales/scale.radialLinear.js?

Steps to Reproduce (for bugs)

https://codepen.io/adrianhelvik/pen/BYYGzO?#

Context

I want to create a radar chart that conforms to the design I’ve been given and that is not possible. Tweaking another option would be a good alternative for my use case.

Environment

• Chart.js version: latest
• Browser name and version: Chrome 64
• Link to your project: https://codepen.io/adrianhelvik/pen/BYYGzO?#