fixed whitespacing
added unit tests for ArtistScraper::getAlbumSongs()
added failing unit test case
fixed white space issue
added failing case when songs in album section are in unordered list instead of ordered
fixed issue with unordered list
added one more unit test case with mixed lists
added failing unit test where there are not only songs in unordered list in the section
fixed issue with not only songs in the section