• [varLib.models] New API for VariationModel: getMasterScalars and interpolateFromValuesAndScalars.
• [varLib.interpolatable] Various bugfixes and rendering improvements. In particular, add a Summary page in the front, and an Index and Table-of-Contents in the back. Change the page size to Letter.
• [Docs/designspaceLib] Defined a new public.fontInfo lib key, not used anywhere yet (#3358).