Custom world generation/configured decorator


 * The root tag
 * The type of configured decorator. Must be one of the types listed below.
 * The settings for this configured decorator. The settings vary depending on . Any name not listed under this tag has no settings; however, they must still include an empty   object in their definition.
 * If  is ,  , or  :
 * The chance that this feature will generate.
 * If  is ,  ,  , or  :
 * Uniform Int with  -10,   128, and   128
 * If  is  :
 * If  is  :
 * (optional): Defaults to 0 if not provided.
 * If  is  :
 * If  is ,  , or  :
 * (optional): Defaults to 0 if not provided.
 * (optional): Defaults to 0 if not provided.
 * (optional): Defaults to 0 if not provided.
 * If  is  :
 * If  is  :
 * The carving generation step; either  or
 * If  is  :
 * The outer configured decorator.
 * The inner configured decorator.
 * (optional): Defaults to 0 if not provided.
 * (optional): Defaults to 0 if not provided.
 * (optional): Defaults to 0 if not provided.
 * If  is  :
 * If  is  :
 * The carving generation step; either  or
 * If  is  :
 * The outer configured decorator.
 * The inner configured decorator.
 * If  is  :
 * The outer configured decorator.
 * The inner configured decorator.