Changes in version 1.15.1                        

  - bugfix in summarizeFlow which was causing numeric columns to be
    converted to characters

                        Changes in version 1.15                         

  - summarizeFlow now summarizes all data channels by default
      - now implements the dplyr-based meanMedianSD function
      - seems to be a little bit faster
  - tidyFlow is a new function that generates a rectangular, tidy
    dataset containing all collected parameters for each cell, including
    the time at which the cell was measured
  - default arguments for steadyState have been updated to be most
    general