Add schema.org vocabulary from description file

Julien LepillerTue May 05 00:56:40+0200 2020

f790332

guile-fediverse/activitystreams
namelast commitdate
ontology.scmUse a more consistent representation for jsonldSat May 02 23:55:21+0200 2020
predicates.scmRework the activitystreams implementation and vocabulariesFri May 01 04:02:41+0200 2020
vocabulary.scmRework the activitystreams implementation and vocabulariesFri May 01 04:02:41+0200 2020