vstack-router

Universal router

• router convert location changes to screen changes using single transition function.
• location is an object that represent some history action.
• history is a universal abstraction on session history.
• screen is an object that represent UI of some location.
• transition is a function that trying to eventually satisfy a location.
• transition could be combination of other transition functions.
• transition calls are synchronised via queue, but router skips tasks in the middle of the queue, because they are unreachable.