Model the distribution of CpG o/e ratios using Kernel Density Estimation.

Parameters:

"-o", "--frac-outl"                   maximum fraction of CpGo/e ratios excluded as outliers [default 0.01]
"-d", "--min-dist"                    minimum distance between modes, modes that are closer are joined [default 0.2]
"-c", "--conf-level"                  level of the confidence intervals of the mode positions [default 0.95]
"-m", "--mode-mass"                   minimum probability mass of a mode [default 0.05]
"-b", "--band-width"                  bandwidth constant for kernels [default 1.06]
"-B", "--bootstrap"                   calculate confidence intervals of mode positions using bootstrap.
"-r", "--bootstrap-reps"              number of bootstrap repetitions [default 1500]
"-p", "--peak-file"                   name of the output file describing the peaks of the KDE [default peaks.csv]
"-s", "--bootstrap-file"              Name of the output file with bootstrap values [default "bootstrap.csv"]
"-H", "--outlier-hist-file"   Outliers histogram file [default outliers_hist.pdf]
"-C", "--cutoff-file"                 Outliers cutoff file [default outliers_cutoff.csv]
"-k", "--kde-file"                    Kernel density estimation graph [default KDE.pdf]