When the discvar input for the opgd, rgd, rid, spade functions is NULL,
it is assumed that all independent variables in the formula need to be discretized.
Updating the S3 method for plotting various factor detectors to better conform to academic publication requirements.
Using new example data in the vignettes for spade and idsa.
Adding the esp function to the package.
Unify all vignettes filenames to lowercase.
Support for using the sf object as input in all models.