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2017-08-02
* Few bugfixes.
* New property for ScopusAbstract: `abstract`.
* Change latex key in ScopusAbstract.bibtex to <FirstauthorYearTitlefirstwordTitlelastword>
* Raise ValueError in ScopusAbstract if .bibtex or .ris is called on an item whose aggregationType is not Journal.
* Improved docstrings for ScopusAbstract.
* New properties for ScopusAffiliation: `api_url`, `date_created`, `org_type`, `org_domain`, `org_url`.
* In ScopusAffiliation, the `affiliation_id` returns the Scopus Affiliation ID from the result rather than the used aff_id.