Hey @GoldenRatio
In the announcement notes of 3.3.1, make sure to read the Jquery 3.0 Core update guide.
It lets you know which jquery syntax has changed. The three most relevant are;
.load(function() becomes .on(“load”, function()
Same format goes for .load() and .unload()
You can use jquery 3 migrate plugin but you will need to learn the syntax eventually. Hope this helps.