Fix DictSummary to correctly handl scalar values
Fix DictSummary to correctly handl scalar values

jnishi/chainer,chainer/chainer,pfnet/chainer,ktnyt/chainer,delta2323/chainer,cupy/cupy,cupy/cupy,tkerola/chainer,niboshi/chainer,hvy/chainer,okuta/chainer,niboshi/chainer,ronekko/chainer,keisuke-umezawa/chainer,chainer/chainer,wkentaro/chainer,kikusu/chainer,wkentaro/chainer,keisuke-umezawa/chainer,ktnyt/chainer,ysekky/chainer,cupy/cupy,chainer/chainer,kikusu/chainer,anaruse/chainer,niboshi/chainer,okuta/chainer,jnishi/chainer,niboshi/chainer,jnishi/chainer,aonotas/chainer,ktnyt/chainer,cupy/cupy,keisuke-umezawa/chainer,okuta/chainer,jnishi/chainer,rezoo/chainer,hvy/chainer,kiyukuta/chainer,wkentaro/chainer,keisuke-umezawa/chainer,kashif/chainer,hvy/chainer,chainer/chainer,wkentaro/chainer,okuta/chainer,ktnyt/chainer,hvy/chainer