Add environment variable for floatX
Add environment variable for floatX

mila-udem/fuel,codeaudit/fuel,markusnagel/fuel,dhruvparamhans/fuel,laurent-dinh/fuel,hantek/fuel,rizar/fuel,mjwillson/fuel,bouthilx/fuel,chrishokamp/fuel,capybaralet/fuel,dribnet/fuel,dmitriy-serdyuk/fuel,aalmah/fuel,jbornschein/fuel,dwf/fuel,janchorowski/fuel,ejls/fuel,udibr/fuel,mjwillson/fuel,orhanf/fuel,EderSantana/fuel,janchorowski/fuel,bouthilx/fuel,harmdevries89/fuel,lamblin/fuel,udibr/fuel,vdumoulin/fuel,rodrigob/fuel,mducoffe/fuel,orhanf/fuel,harmdevries89/fuel,ejls/fuel,markusnagel/fuel,hantek/fuel,glewis17/fuel,chrishokamp/fuel,dwf/fuel,aalmah/fuel,glewis17/fuel,vdumoulin/fuel,dribnet/fuel,EderSantana/fuel,capybaralet/fuel,mila-udem/fuel,codeaudit/fuel,dmitriy-serdyuk/fuel,rizar/fuel,rodrigob/fuel,jbornschein/fuel,dhruvparamhans/fuel,lamblin/fuel,laurent-dinh/fuel