How to use a single sketchignore for entire repo which includes subdirectories?
When we have Sketch files in subdirectories of our repo, the root-level sketchignore is not used when we generate pngs.  I realize I can make a copy of the root-level sketchignore and put that into the subdirectories, but then we loose a single-source-of-truth.  

How do we enable the use of a single sketchignore which gets used no matter where the Sketch files are in subdirectories?