Cosmetic changes in finding of hyperparameters
New densities: left and right triangular distributions
new function for concatenation of time series
Cosmetic changes
change in behavior of plotyy

now all the variables are mapped into the [0,1] interval
vectorization of some rise methods
bug corrected in vectorization for printing results
bug correction in counterfactual function
cosmetic change
change in irf function due to new concatenation