bartaz/impress.js — pull request #412 by andygoblins (2014-07-27 20:05:23+00:00)
Title: onStepLeave should fire before current slide loses "active" class

Conceptually, I expect the step that calls onStepLeave to be "active" when onStepLeave runs. This allows me to use onStepLeave as a teardown function when leaving a slide.