parperm_boot()
Bootstrapping using parPerm
run_permtest()
Run permutation test using parallel processing
run_permtest_multicat()
Run permutation test using parallel processing, for predictor variabbles containing multiple (3+ categories)
xmat_trans()
Preprocess x matrix data
ymat_trans()
Preprocess y matrix data, while double checking all data is nifti
ymat_trans_mask()
Preprocess y matrix data if user includes a masking file, while double checking all data is nifti