Upgrade/replace waypoints ahead of jQuery update

[joelit]

The current state of the package

https://github.com/etd-framework/waypoints https://packagist.org/packages/etdsolutions/waypoints (Last update in Oct 2015)

[osma]

The jQuery Migrate plugin complains about the use if jQuery.isFunction() in waypoints:

(as seen in Chromium, which shows more detail than Firefox)