Changes since tag 8.0.1.12

commit 4abae71c370e6df8d842ef7763b8218b280750fc
Author: Matt Redmond <mttrdmnd@gmail.com>
Date:   Wed Jun 12 09:27:02 2019 -0700

    Update to latest version of LibUIDropdownMenu
    
    Prevent conflict with MethodDungeonTools using a newer version.
    I believe this is the minimum viable change.
    
    Testing: loaded addon, verified dropdowns work, and error message is
    gone.

