v0.7.2

chromatographR 0.7.2

• Export get_times and get_lambdas functions.
• Small revisions to documentation.
• Use tryCatch to allow for missing spectra in plot_all_spectra.
• Fixed rounding of p-values in cluster_spectra.
• Changed alpha in cluster_peaks to match common usage, such that the
  alpha parameter now specifies the significance level rather than the
  confidence level (1-alpha).
• Deprecated peak_no argument in cluster_peaks in favor of new min_size and max_size arguments.