test against v4 branch
test against v4 branch

okuta/chainer,jnishi/chainer,wkentaro/chainer,jnishi/chainer,okuta/chainer,pfnet/chainer,hvy/chainer,niboshi/chainer,chainer/chainer,niboshi/chainer,hvy/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,ktnyt/chainer,ronekko/chainer,chainer/chainer,jnishi/chainer,okuta/chainer,wkentaro/chainer,jnishi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,keisuke-umezawa/chainer,hvy/chainer,ktnyt/chainer,anaruse/chainer,niboshi/chainer,tkerola/chainer,ktnyt/chainer,wkentaro/chainer,rezoo/chainer,chainer/chainer,ktnyt/chainer,hvy/chainer,chainer/chainer,okuta/chainer,niboshi/chainer