Add `__array_priority`
Add `__array_priority`

wkentaro/chainer,jnishi/chainer,benob/chainer,tigerneil/chainer,wkentaro/chainer,tereka114/chainer,truongdq/chainer,cupy/cupy,AlpacaDB/chainer,wavelets/chainer,t-abe/chainer,jfsantos/chainer,minhpqn/chainer,rezoo/chainer,cupy/cupy,niboshi/chainer,keisuke-umezawa/chainer,bayerj/chainer,kiyukuta/chainer,hvy/chainer,tkerola/chainer,muupan/chainer,AlpacaDB/chainer,masia02/chainer,tscohen/chainer,kikusu/chainer,chainer/chainer,sinhrks/chainer,sinhrks/chainer,niboshi/chainer,okuta/chainer,aonotas/chainer,delta2323/chainer,cemoody/chainer,woodshop/chainer,ronekko/chainer,pfnet/chainer,wkentaro/chainer,ktnyt/chainer,ytoyama/yans_chainer_hackathon,umitanuki/chainer,kikusu/chainer,benob/chainer,niboshi/chainer,hvy/chainer,yanweifu/chainer,okuta/chainer,cupy/cupy,hvy/chainer,hidenori-t/chainer,t-abe/chainer,keisuke-umezawa/chainer,okuta/chainer,chainer/chainer,muupan/chainer,elviswf/chainer,laysakura/chainer,ktnyt/chainer,Kaisuke5/chainer,kuwa32/chainer,hvy/chainer,jnishi/chainer,anaruse/chainer,truongdq/chainer,cupy/cupy,jnishi/chainer,keisuke-umezawa/chainer,woodshop/complex-chainer,kashif/chainer,chainer/chainer,wkentaro/chainer,ktnyt/chainer,niboshi/chainer,ikasumi/chainer,keisuke-umezawa/chainer,ktnyt/chainer,sou81821/chainer,jnishi/chainer,ysekky/chainer,okuta/chainer,1986ks/chainer,chainer/chainer