set default value of the ot argument to True, as discussed in https://github.com/fonttools/fonttools/commit/a1629fa52bddad12efe49f5e9565f96c3a00ae8c
set default value of the ot argument to True, as discussed in https://github.com/fonttools/fonttools/commit/a1629fa52bddad12efe49f5e9565f96c3a00ae8c

googlefonts/fonttools,fonttools/fonttools