public Store(TState initialState, Func <TState, TEvent, TState> reducer)
{
var initialStateTransition = StateTransition.NewInitial(initialState);
StateTransitions =
Events
.Scan(initialStateTransition, StateTransition.LiftReducer(reducer))
.StartWith(initialStateTransition)
.Publish()
.AutoConnect();
States =
StateTransitions
.Select(StateTransition.StateOf)
.DistinctUntilChanged()
.Replay(1)
.AutoConnect(0);
}