StMoMo v0.3.1
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* Change residual plotting function (plot.resStMoMo) to use a
  more effective divergent colour palette for colourmaps.
* Change the default plotting limits in residual plotting 
  function to have a symmetric scale
* Fix formatting issues in logLik, AIC and BIC functions for 
  models fitted with gnm  


StMoMo v0.3.0
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* Add optional parameters kt.lookback and gc.lookback to 
  functions forecast.fitStMoMo, simulate.fitStMoMo and 
  simulate.bootStMoMo. These new parameters allow the forecast
  and simulation of mortality models using only a limited history
  of the period and cohort indexes
  
* Improve documentation of some functions

* Update package vignette
  
* Add citation file


StMoMo v0.2.0
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* First stable version of StMoMo released to CRAN