test: two sample with generated test data
fix: use max number of permutations
test: fixe number of betas (in presence of covariates)
test: do not compare two-sample ancova with SPM
test: add (dummy) approximate test
test: anova between with generated test data
test: anova within with generated test data
test: paired t with generated test data
test: multi-sub regression with generated test data
test: one-sub regression with generated test data
test: two sample two conditions with generated test data
test: move files