Changes since previous release:
- [builder] Intuit instance names better, fixes #966 #969
- Split Italic and Roman VFs in builder #964
- Create a "WriteMetadata" pattern #973
- Reformat with black #974
- [builder] Handle small caps generation for split VFs #971
- packager: rm html_formatter #975
- gftools-packager --build-from-source #959
