bot-blog: using and updating Wikidata

[davewhiteland]

Currently, have blogged use of Wikidata only for name transliterations — but we also use Wikidata as a source and furthermore we're increasingly adding and updating data in Wikidata. It's almost symbiotic!

NB if the "Membership-Matrix" proof of concept ends up working on wikidata data (as is currently planned), that can be a separate, later blog post.