* Add language support metadata to the OFL families.
* Add language support metadata to all apache/ufl fonts.
* Add language support metadata / sample text to remaining OFL families.
* [gftools-packager] Zen Loop: Version 1.000; ttfautohint (v1.8.3) added
* Zen Loop Version 1.000; ttfautohint (v1.8.3) taken from the upstream repo https://github.com/googlefonts/zen-loop at commit ed607f9dcd.
* [gftools-packager] ofl/zenloop remove METADATA "source". google/fonts#2587