Extended the abilities of randomized trials, and the functionality in plotExperiment. The method processFile now can do a lot more than before. It can still do the sliding window average, and it can still do sum of return (total return), but now it also includes getting just the final return and (coolest addition imo is) it can downsample the episodes, essentially doing a type of piecewise linear regression on the learning curves where you specify the number of pieces and it uses kmeans to figure out where to put them.