add support for uint32 and uint64 in repr
add support for uint32 and uint64 in repr

jsanjuas/Nim,mbaulch/Nim,singularperturbation/Nim,jfhg/Nim,endragor/Nim,zachaysan/Nim,tulayang/Nim,tulayang/Nim,dom96/Nim,dom96/Nim,endragor/Nim,russpowers/Nim,jfhg/Nim,endragor/Nim,singularperturbation/Nim,singularperturbation/Nim,dom96/Nim,singularperturbation/Nim,mbaulch/Nim,mbaulch/Nim,zachaysan/Nim,tulayang/Nim,zachaysan/Nim,singularperturbation/Nim,zachaysan/Nim,russpowers/Nim,dom96/Nim,endragor/Nim,singularperturbation/Nim,dom96/Nim,zachaysan/Nim,jfhg/Nim,tulayang/Nim,jsanjuas/Nim,mbaulch/Nim,endragor/Nim,jsanjuas/Nim,singularperturbation/Nim,dom96/Nim,haiodo/Nim,jfhg/Nim,jsanjuas/Nim,mbaulch/Nim,jfhg/Nim,haiodo/Nim,haiodo/Nim,endragor/Nim,jsanjuas/Nim,mbaulch/Nim,tulayang/Nim,haiodo/Nim,jsanjuas/Nim,dom96/Nim,russpowers/Nim,jfhg/Nim,zachaysan/Nim,endragor/Nim,haiodo/Nim,mbaulch/Nim,russpowers/Nim,russpowers/Nim,russpowers/Nim,russpowers/Nim,tulayang/Nim,jsanjuas/Nim,zachaysan/Nim,haiodo/Nim,jfhg/Nim,haiodo/Nim