This is part of ongoing work to make core platform-independent.
BREAKING CHANGE
All private exports from 'angular2/src/core/facade/{lang,collection,exception_handler}' should be replaced with 'angular2/src/facade/{lang,collection,exception_handler}'.
If the anchor element on which the "router-link" directive is present has a target
attribute other than "_self," the handler will not prevent default behavior of
the browser.
Closes#4233Closes#5082
Previously if the URL changed in `HashLocation` mode, the router would not pick up the change.
This adds a listener in `HashLocationStrategy` for `hashchange` events to fix the problem.
Closes#5013