Changes in abc 1.5
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  o Add the reference to the MEE paper in the CITATION file and in the vignette
  try and enjoy
  >if(nchar(system.file(package="abc"))) citation("abc")
  o Add the AIC and BIC computation in the abc function.
  They are used to select a subset of informative statistics.
  It is the AIC/BIC of the local linear regression that is returned.

