Support Wide Color on iOS 10

[hipwelljo]

Could we allow users to select colors outside the sRGB range using Wide Color support for the P3 gamut? New iPads and iPhones could utilize that extra range.

[hipwelljo]

I discovered CIHueSaturationValueGradient, a new CIFilter that generates a color wheel for you and it supports wide color. Apple uses this in the macOS color picker utility. Seems this library could utilize it as well.