doesn't force block_size=1 when sum_enabled=True
doesn't force block_size=1 when sum_enabled=True

menpo/menpo,yuxiang-zhou/menpo,patricksnape/menpo,mozata/menpo,yuxiang-zhou/menpo,menpo/menpo,grigorisg9gr/menpo,mozata/menpo,grigorisg9gr/menpo,yuxiang-zhou/menpo,mozata/menpo,patricksnape/menpo,grigorisg9gr/menpo,patricksnape/menpo,mozata/menpo,menpo/menpo