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to be done in package distrMod
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+ improve Routines for asymptotic covariance / IC for MDE

+ model diagnostics:
   *several distances fitted-distribution
   *fitted density vs histogram
   *fitted cdf vs ecdf

+ generic treatment of data import by some generic 
  "prepare" function which does
   * cleaning from missings
   * coerce to standard data format

+ control class for controlling the optimizer

+ model classes for multivariate location and scale based on distrEllipse

+ integration of GParetoFamily (not so soon)

+ generic functions to quantify model fit quality like AIC, BIC