enforce minimum of 2 classes for confusion matrix
enforce minimum of 2 classes for confusion matrix

gentnerlab/pyoperant,MarvinT/pyoperant,MarvinT/pyoperant,opyrant/opyrant,theilmbh/pyoperant,opyrant/opyrant,theilmbh/pyoperant,gentnerlab/pyoperant,gentnerlab/pyoperant,MarvinT/pyoperant,theilmbh/pyoperant,gentnerlab/pyoperant,theilmbh/pyoperant