* [merge] Handle None GDEF.table.MarkGlyphSetsDef * [merge] Handle differing CFF nominal/defaultWidthX Fixes https://github.com/fonttools/fonttools/issues/3069 * Update Lib/fontTools/merge/tables.py Co-authored-by: Cosimo Lupo <clupo@google.com> --------- Co-authored-by: Cosimo Lupo <clupo@google.com>