Changes

There were skill trees in Diablo III during the first few years of development; they were seen in the playable demos at Blizzcon 2008 and 2009. During 2010 though, the [[D3 Team]] reworked the skill interface. They removed all [[passive skills]] turning them into [[traits]] which were moved to a list in their own display window. Active skills were all that remained in the skill tree, which also became a list.