Typo in KPIC2 default feature param ranges

[coltonlloyd]

Thanks for the great package Rick! I noticed a small typo when running parameter optimizations for KPIC2. A default range was missing for min_width which would cause an error when the line below was executed:

patRoon/R/doe-optimizer.R

Line 247 in b5caee3

if ((diff(settingRange) / 2) < step)

[rickhelmus]

Great, many thanks for the PR!