flake8 to remove trailing whitespace
flake8 to remove trailing whitespace

chainer/chainer,niboshi/chainer,chainer/chainer,chainer/chainer,hvy/chainer,keisuke-umezawa/chainer,wkentaro/chainer,tkerola/chainer,wkentaro/chainer,keisuke-umezawa/chainer,niboshi/chainer,hvy/chainer,niboshi/chainer,okuta/chainer,keisuke-umezawa/chainer,hvy/chainer,pfnet/chainer,chainer/chainer,niboshi/chainer,okuta/chainer,wkentaro/chainer,keisuke-umezawa/chainer,okuta/chainer,wkentaro/chainer,hvy/chainer,okuta/chainer