* 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] Signika Negative: Version 2.001 added
* Signika Negative Version 2.001 taken from the upstream repo https://github.com/aaronbell/signika at commit 9d4b72fabf.
* [gftools-packager] ofl/signikanegative remove METADATA "source". google/fonts#2587