Raw file support for in camera crops#479

Show raw files with the applied crop from the camera. For example, when using a Leica Q2 you can apply frame lines for various crops and that information is saved into the meta data for the raw file. When viewed in Lightroom the raw file shows that crop applied, while still keeping the full image to allow adjusting the crop or removing entirely in post. To my knowledge Darkroom does not support this meta data.