PlotFTIR 1.2.0

Patch update to expose check_ftir_data for downstream packages. (related to #19)
Add import capability for .jdx filetype using readJDX. (#20)

PlotFTIR 1.1.0

Added ability to set default language in options(). (#10)
Added ability to highlight one or more samples in spectra. (#15)
Added ability to add a background shaded band (like a wide marker) to indicate a given range. (#16)
Added attributes to imported data to simplify internal calculation of thingslike y axis units. (#17)