Version 2.0.0

Expanded graphing capabilities and XRD calculations. Now calls plot manipulations with Chart class.

Features

NEW! Chart class - constructor takes x-y data inputs to make plots

NEW! Chart(..).backsub() - background subtraction (optional: direct plot with kwarg show=True )
NEW! Chart(..).emission_lines() - calculates emission lines arising from different types of radiation i.e. K_beta radiation
wavelength of K_beta == 0.139 nm (optional: direct plot with kwarg show=True )
NEW! Chart(..).SchPeak() - calculates Scherrer width of peak found within kwarg xrange=[x0,xf] (optional: direct plot with kwarg show=True )