version 2.1.0

snowfall package for parallel processing is replaces by future.apply package; #7
future.apply, shiny, shinydashboard, geosphere and ggplot2 packages moved to SUGGESTION packages. These are not install by default and the user is asked if needed. #7
RStoolbox is no longer used for clustering
an argument is added to envBlock function for sampling from raster layers
no dependency on sp package any more
doParallel = FALSE by default in spatialAutoRange function

version 2.0.1

print() and cat() are removed from the functions and verbose argument is added instead

most of the underlying functions are migrated to sf functions;
the parallel processing changed from foreach to snowfall;
the species argument in spatialBlock function accepts multi-class responses to find evenly distributed records in train and test folds;

change spatialAutoRange function to accepts rasters with low number of pixels; #2
the maskBySpecies = FALSE in spatialBlock function is no longer supported;
the numLimit argument in spatialBlock function is only accepts numeric values, and 0 means searching for evenly distributed folds;