##v0.3
###Algorithm
- Changed the exponentials to polynomials in the matrix (see the manuscript for details).
##v0.2
###Statistics
- Used psedusovalues and signed-rank test to select best model(s).
- Used medians to determine the best-fit model.
###Miscellany
- Forced the levels of Model in data frames to be in the order in manuscript.
- Set starting time of HI to be the same as its ending time.