Choice of color space, e.g. P3, sRGB, ProPhoto

Please add support for alternate color spaces. Exporting to JPG or PNG gives an image in sRGB and there is no provision to change that. Apple devices use the P3 color space natively, which has a broader color gamut than sRGB. By limiting documents to sRGB, we are missing out on a range of possible colors, especially when the project is to be viewed on iPhones and iPads.