angular-ui/bootstrap — pull request #840 by hall5714 (2013-08-17 18:00:43+00:00)
Title: demo(tooltip): change demo to support bootstrap3

This is a minor fix, and it illustrates the arrow positioning issue with tooltip. The focus demo shows the tooltip arrow positioning pointing at the base of the form control. To fully support Bootstrap 3, we have to calculate the arrow position as the mid-point of the input element.