cercospoRa 0.0.2

Bug fixes

• fix variable assignment bug, see issue #41

Minor improvements

• Improved estimations of cultivar susceptibility on epidemic onset date
  issue #38 and #42
• relative humidity thresholds are now a variable on calc_epidemic_onset()
  #40
• Argument in calc_epidemic_onset_from_image() cc_r changed from c_closure
  This is for clarity as the function calc_epidemic_onset has the same argument
  which expects a different input to calc_epidemic_onset_from_image()

Documentation improvements

• Clarify cultivar susceptibility references and bsa index.
• Update README
• Add spelling package to suggests
• Corrected unit tests
• Expand vignette to look at range of pixelwise epidemic onsets.
• Formatting and grammar improvements