fixed psi0 psi1 renaming error
fixed psi0 psi1 renaming error

jameshensman/GPy,befelix/GPy,SheffieldML/GPy,SheffieldML/GPy,beckdaniel/GPy,buntyke/GPy,mikecroucher/GPy,buntyke/GPy,AlexGrig/GPy,TianpeiLuke/GPy,fivejjs/GPy,mikecroucher/GPy,befelix/GPy,ptonner/GPy,fivejjs/GPy,beckdaniel/GPy,avehtari/GPy,esiivola/GPYgradients,Dapid/GPy,avehtari/GPy,befelix/GPy,mikecroucher/GPy,Dapid/GPy,ptonner/GPy,esiivola/GPYgradients,mikecroucher/GPy,dhhjx880713/GPy,TianpeiLuke/GPy,gusmaogabriels/GPy,TianpeiLuke/GPy,buntyke/GPy,ysekky/GPy,befelix/GPy,gusmaogabriels/GPy,beckdaniel/GPy,esiivola/GPYgradients,dhhjx880713/GPy,strongh/GPy,dhhjx880713/GPy,ptonner/GPy,jameshensman/GPy,jameshensman/GPy,maaskola/GPy,maaskola/GPy,SheffieldML/GPy,buntyke/GPy,AlexGrig/GPy,maaskola/GPy,avehtari/GPy,PredictiveScienceLab/GPy,Dapid/GPy,PredictiveScienceLab/GPy,strongh/GPy,gusmaogabriels/GPy,jameshensman/GPy,beckdaniel/GPy,dhhjx880713/GPy,avehtari/GPy,ysekky/GPy,Dapid/GPy,ysekky/GPy,strongh/GPy,maaskola/GPy,AlexGrig/GPy,AlexGrig/GPy,SheffieldML/GPy,esiivola/GPYgradients,ysekky/GPy,fivejjs/GPy,ptonner/GPy,PredictiveScienceLab/GPy,PredictiveScienceLab/GPy