* [gftools-packager] Train One: Version 1.000; ttfautohint (v1.8.3) added
* Train One Version 1.000; ttfautohint (v1.8.3) taken from the upstream repo https://github.com/fontworks-fonts/Train.git at commit ca5aa2c4dd.
* [gftools-packager] ofl/trainone remove METADATA "source". google/fonts#2587
* Update METADATA.pb