Renamed scroll context to scroll container to avoid confusion with spy context.
Fixed memory leak.
Added angular.element scroll functions.
Fixed bug where 0 values would not be regarded to scroll.
Added scrollToElement support.
Added duration and easing support.
Migrated directives away from scroller service to helper functions.
Refactored scrollSpy to be container aware and removed prefix from services.
Updated demos to new API.
Updated README with API changes.
Readme organization tweaks.
Released v0.5.0.