Upgrade from jQuery Waypoints 2.0.2 to v2.0.4

Changelog

v2.0.4
Fix enable, disable, and destroys calls not chaining the jQuery object. (Issue #244) (Thanks @robharper)
Fix destroy not unregistering internal waypoint references if underlying node has been removed from the document, causing memory leaks. (Issue #243)

v2.0.3
Add "unsticky" function for sticky shortcut. (Issue #130)
Exit early from Infinite shortcut if no "more" link exists. (Issue #140)
Delay height evaluation of sticky shortcut wrapper. (Issue #151)
Fix errors with Infinite shortcut's parsing of HTML with jQuery 1.9+. (Issue #163)