time: prevent negative delays in every!. fixes #368
time: prevent negative delays in every!. fixes #368

jamtur01/riemann,abailly/riemann,bmhatfield/riemann,eric/riemann,jeanpralo/riemann,riemann/riemann,aphyr/riemann,eric/riemann,aphyr/riemann,Anvil/riemann,riemann/riemann,abailly/riemann,pradeepchhetri/riemann,jamtur01/riemann,vixns/riemann,pradeepchhetri/riemann,bmhatfield/riemann,vixns/riemann,Anvil/riemann,jeanpralo/riemann