This is really going to break things, if someone is updating the library to latest version. This is a very frequently used function and chances are, that, in a mobile web application its being used everywhere. Lets remind ourselves again that jQuery.mobile.changePage is deprecated as of 1.4.0 and will be removed in 1.5.0.
Now there are vaious ways to change page in a jQuerymobile application. Here are the 3 options to do the page change in the new API.
$(":mobile-pagecontainer").pagecontainer("change", "target", { options });
//or
$.mobile.pageContainer.pagecontainer("change", "target", { options });
//or
$("body").pagecontainer("change", "target", { options });
Here is the official document for reference
Happy coding.