Idea: New printing option: Coloured overlapping layouts

[Douglas]

@slspencer

There’s an old issue about this in Layout mode. It might be useful to generate a layout using Grainline angles, then allowing further manual adjustments:

Grainlines a given. Need to be able to force pieces on grain, allow for 45 or 90 rotation and allow // disallow to rotate 180 for one way fabrics.