Added code to util to make our normal test set, with all of the features. Added downsample(), to produce the downsampling of negative rows. Changed make.counts to return a list of count matrices for later use;   this allow us to delete x after making the split.
Added code to util to make our normal test set, with all of the features.
Added downsample(), to produce the downsampling of negative rows.
Changed make.counts to return a list of count matrices for later use;
  this allow us to delete x after making the split.

davidthaler/Kaggle_Expedia_competition_code,davidthaler/Expedia_competition_code