Changed paths:
M Lib/fontTools/varLib/instancer/__init__.py
M Lib/fontTools/varLib/merger.py
M Lib/fontTools/varLib/varStore.py
M Tests/varLib/instancer/instancer_test.py
Log Message:
-----------
[varLib.instancer] Instance the BASE table (#4137)
BASE was left untouched, so an instance kept the default master's
baselines along with a stale ItemVariationStore.