Also showcase having something after a list, in scrollable example
Alter tests for scrollable so there's both an offset element above and below the list, update expectations
Add scroll element relative horizontal/vertical tile position helper methods
Simplify calculateStartIndex by using scroll element-relative calculations
Alter updateIndexRange so it will skip viewport indexes if not the entire viewport is used by current list
Remove a TODO which is now done
Add scrollToTop helper
Use scrollToTop, scrollToBottom instead of implicit methods
Add tests for scrollable with top/bottom offset twice the height of the viewport
Merge pull request #15 from mwoc/optimiseScrollable

Optimise amount of elements rendered in scrollable mode