When calling `.enable(false)` I get this error: `Uncaught ReferenceError: fnDisable is not defined`  What I checked/tried: * docs https://datatables.net/forums/categories/colreorder/ * forums https://datatables.net/forums/categories/colreorder/ * interactive demo of the bug: https://codepen.io/hchiam/pen/MWBjZqb?editors=1011 (open browser console, _not_ CodePen's own console, and then click the "Disable" button)