• [xmlWriter] Default to "\n" for newlinestr instead of platform-specific os.linesep (#2384).
• [otData] Define COLRv1 ClipList and ClipBox (#2379).
• [removeOverlaps/instancer] Added --ignore-overlap-errors option to work around Skia PathOps.Simplify bug (#2382, #2363, google/fonts#3365).
• NOTE: This will be the last version to support Python 3.6. FontTools will require Python 3.7 or above from the next release (#2350).