This update fixes some issues with navmenus in the admin area along with some other minor UI/UX improvements.
To download the latest version
click here.
v 3.1.2
* Fixed bug when saving navmenu without editing it's content would lose hierarchy
* Navmenus can now have nested submenus with a depth greater than 1
* Search now works on Nav Menus page in admin
* Some minor UI refinements to navmenu drag and drop interface
* Category move up/down in admin area has been improved