Donut pie charts

[jaimeiniesta]

It would be great to have an option in pie charts to have a "doughnut" style, with a transparent hole in the center like this:

[Prathapkarumanchi]

@jaimeiniesta We can achieve this with clipmask, the only thing is we need to pick percentage value from style property so that we can change percentage of doughnut.

[Dzivo]

@Prathapkarumanchi was this implemented ?