Universe::state function
Universe::state function

This is a cheap way to see if the universe may have changed since
between two call to this function

antoinewdg/lumol,g-bauer/lumol,Luthaf/cymbalum,antoinewdg/lumol,antoinewdg/lumol,g-bauer/lumol,g-bauer/lumol,Luthaf/cymbalum