benbarnett/jQuery-Animate-Enhanced — pull request #138 by ruddog (2013-11-28 09:35:19+00:00)
Title: fallback for special easing that use CUBIC_BEZIER.

Browsers that does not support cubic_bezier throw error:
Object doesn't support property or method 'easeOutBack'
To solve this if easing is different from swipe or linear it will be set as linear by default on old browsers