UMD version available?

I'm very new to Quasar-app-extensions. Currently I'm only consuming Quasar as UMD version. (The Julia package StippleUI.jl provides a Quasar-based front-end to a Julia app.) Currently we are checking the possibility of including quasar-app-extensions into our apps. I really like your sortable tree and I'd love to support it in StippleUI. But I think the only way to achieve this is to build a UMD version. However, I didn't find any description in the Quasar docs on this topic. @mechanicalgux are you familiar with generating UMD versions? Could you possibly provide one or give me a hint how to do it? Thanks in advance!