Map pageid to wikidata id

[jcklie]

See https://stackoverflow.com/questions/38398893/is-there-any-dump-for-wikipedia-pageid-to-wikidata-id-mapping#

[CaydenPierce]

Agreed, this is my use case. Currently going from pageid -> title -> wikidataId. Would be worth having that built in.

Thanks for a great tool.