URLNavigator provides an elegant way to navigate through view controllers by URLs. URL patterns can be mapped by using URLNavigator.register(_:_:) function. URLNavigator can be used for mapping URL patterns with 2 kinds of types: URLNavigable and URLOpenHandler. URLNavigable is a type that defines a custom initializer and URLOpenHandler is a closure that can be executed. Both an initializer and a closure receive URL and placeholder values. URL patterns can contain placeholders. Placeholders...