@ryanseddon Right now, we don't allow App Developers to arbitrarily include vendor libraries in Apps, Underscore 1.3.3 is the version of Underscore that Lotus uses and that we inherit.

We would *like* to use Lodash, but, for the moment it would mean shipping a version with ZAF to be used locally by Apps.  I'd prefer not to have to package vendor libs in with ZAF.

We have an Apps Road Map item for Q1 to build support for App Developers having the ability to include vendor libraries.  (Note: this might actually just mean white-listing certain libs, implementation is to be discussed amongst the team).