Add check for contiguity
Add check for contiguity

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