Add TODO about dtype char code
Add TODO about dtype char code

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