"published in" not added from DOI lookup

[Dan Michael O. Heggø]

Example: I created https://www.wikidata.org/wiki/Q24005277 from 10.1016/0031-9163(64)91136-9 , but had to manually add the "published in"

Both the journal name and issn are found from the crossref API:

https://api.crossref.org/v1/works/http://dx.doi.org/10.1016/0031-9163(64)91136-9

[Dan Michael O. Heggø]

Since this repo is not self-contained it's kinda hard to test, but the loadDOI function seems to miss something like this:

        // Journal
        $journal = $this->getWikidataItemsByStringProp ( 'P236' , $j->message->ISSN[0]) ;
        if ( count($journal) == 1 ) $this->data[$this->props['published in']] = array ( 'Q'.$journal[0] , 'item' ) ;