jlindsey/scapeshift — pull request #5 by eirc (2012-11-17 17:46:59+00:00)
Title: Gatherer repeats "Expansion" field set in "All sets" field, so we keep it once.

Examples:

[Jace Beleren](http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=205960) appears in 4 sets. Not using uniq would return M11 twice as it appears in "Expansion" and "All sets"

[Ad Nauseam](http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=174915) appears in one set only so it would not have this issue.