Added hooks $before/will/afterEnter, $before/will/afterUpdate, $before/will/afterLeave; added $before/will/afterEnterOrUpdate as shortcut for $before/will/afterEnter and $before/will/afterUpdate.
Added service $service.
Added parallel routes.
Added RouteBuilder.
Added $metadata support.

Router.create() is removed in favor of new Router().$route().
Names related to fragment has been changed to segment.
The router will no longer match parent if it has no matching child.
By default, the router will no longer match a route if it has children but the path is ended at the route itself. For example, if the path is /account, and route account has $children, account will not be matched by default. An option $exact is added for this scenario, and applies only to route schema with $children.
RouteMatch#$action has been removed, see hooks for alternatives.
The second argument RouteMatch#$ref(), RouteMatch#$push(), RouteMatch#$replace() methods is now an option object.
Route match ref option preserveQuery is now removed, but the behavior has changed to preserve query defined with $query (and its parents).
The return value of route hooks (such as RouteMatch#$beforeEnter, RouteMatch#$afterLeave) is now a removal callback.
<Redirect> component has been removed.`