allowed the gradchecker to return the gradient ratio
allowed the gradchecker to return the gradient ratio

Just to help with debugging.

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