Fix Load Scopus Csv ScopusCsvDocument authors method

[tleedepriest]

The current Scopus csv test case has the column value "Authors with Affiliations" formatted as Author First Name, Author Last Name, Affiliation; ..... however when using scopus recently this format is Author First Author Last, Affiliation;

This causes the author name property to become the Author First and Author Last AND the first affiliation. This method also needs to be modified to support multiple affiliations for a single author. This may need to be opened up as a separate issue, although it shouldn't be too difficult to implement.

The plan is to add a new test case for a recently exported scopus csv file, then modify the method to pass tests for both files.

[stijnh]

Thanks for keeping track of this! Will it be possible to support both the old CSV format and the new CSV format from Scopus?

Are you working on a PR for this? I'd be happy to accept your update!

[stijnh]

Work for this is ongoing as part of PR #59