Just a quick feature request.

If your app has a fixed position header, $anchorScroll will "incorrectly" position the scroll for the users view. Nothing is broke here, but allowing for an $anchorScrollProvider offset number would be nice.

Basically, right after elm.scrollIntoView() it would execute roughly.. if (offset > 0) $window.scroll($window.scrollX, $window.scrollY - offset);. This would allow $anchorScrollProvider & $anchorScroll to play nicely with fixed position headers.