modified Box() classes to raise errors
modified Box() classes to raise errors

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