Support python3
Support python3

anaruse/chainer,tkerola/chainer,t-abe/chainer,hvy/chainer,okuta/chainer,ktnyt/chainer,cupy/cupy,hvy/chainer,t-abe/chainer,niboshi/chainer,AlpacaDB/chainer,AlpacaDB/chainer,okuta/chainer,truongdq/chainer,truongdq/chainer,kiyukuta/chainer,okuta/chainer,keisuke-umezawa/chainer,chainer/chainer,sinhrks/chainer,wkentaro/chainer,ktnyt/chainer,hvy/chainer,pfnet/chainer,wkentaro/chainer,wkentaro/chainer,keisuke-umezawa/chainer,chainer/chainer,kashif/chainer,niboshi/chainer,cupy/cupy,ysekky/chainer,cemoody/chainer,ronekko/chainer,aonotas/chainer,cupy/cupy,niboshi/chainer,cupy/cupy,jnishi/chainer,jnishi/chainer,ktnyt/chainer,benob/chainer,kikusu/chainer,okuta/chainer,jnishi/chainer,rezoo/chainer,delta2323/chainer,muupan/chainer,keisuke-umezawa/chainer,chainer/chainer,wkentaro/chainer,keisuke-umezawa/chainer,sinhrks/chainer,ktnyt/chainer,chainer/chainer,muupan/chainer,kikusu/chainer,benob/chainer,jnishi/chainer,hvy/chainer,niboshi/chainer