Library that contains (hopefully) the most up to date diminishing return categorization, this is purely the diminishing return data itself with API’s to determine if a spellID has a diminishing return, if it diminishes in PvE and the category it diminishes in.
http://github.com/Shadowed/CCTracker/tree and http://github.com/Shadowed/CCTracker/tree are two examples of implementation for both DRData-1.0 and diminishing return tracking in general.