Tested with: GHC 8.0.1

This module defines a plain and more fast version of an updatable reference that depends on the event queue but that doesn't supply with the signal notification.

By default, the module uses a strict version defined in Simulation.Aivika.Trans.Ref.Base.Strict. There is also another lazy version defined in Simulation.Aivika.Trans.Ref.Base.Lazy.