Support python3
Support python3

muupan/chainer,ktnyt/chainer,elviswf/chainer,jnishi/chainer,sou81821/chainer,tigerneil/chainer,t-abe/chainer,tkerola/chainer,truongdq/chainer,hvy/chainer,delta2323/chainer,yanweifu/chainer,chainer/chainer,chainer/chainer,cupy/cupy,Kaisuke5/chainer,okuta/chainer,pfnet/chainer,jnishi/chainer,okuta/chainer,minhpqn/chainer,cemoody/chainer,aonotas/chainer,kikusu/chainer,benob/chainer,cupy/cupy,truongdq/chainer,keisuke-umezawa/chainer,wkentaro/chainer,laysakura/chainer,wkentaro/chainer,hvy/chainer,ktnyt/chainer,niboshi/chainer,niboshi/chainer,kuwa32/chainer,muupan/chainer,chainer/chainer,benob/chainer,ktnyt/chainer,umitanuki/chainer,ytoyama/yans_chainer_hackathon,chainer/chainer,ktnyt/chainer,wkentaro/chainer,wavelets/chainer,jnishi/chainer,rezoo/chainer,kiyukuta/chainer,niboshi/chainer,masia02/chainer,AlpacaDB/chainer,AlpacaDB/chainer,ikasumi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,1986ks/chainer,kikusu/chainer,niboshi/chainer,hvy/chainer,kashif/chainer,okuta/chainer,jnishi/chainer,tscohen/chainer,sinhrks/chainer,keisuke-umezawa/chainer,cupy/cupy,hvy/chainer,anaruse/chainer,woodshop/chainer,cupy/cupy,woodshop/complex-chainer,okuta/chainer,sinhrks/chainer,t-abe/chainer,ysekky/chainer,ronekko/chainer,hidenori-t/chainer,keisuke-umezawa/chainer