optional dependency when uploading to maven

[EvangelosG]

hey @chrisbanes -- thanks so much for this repo, I really appreciate it. I'm currently working on a project which requires me to include a dependency as optional. I'm able to accomplish this using the plugin nebula.optional-base when building locally, but not when uploading to maven. Does your uploadArchives approach offer any dependency exclusion for uploads to maven?

Thanks for your time, if it's available it's appreciated.

[AlexanderLS]

@EvangelosG could you test your project with https://github.com/Vorlonsoft/GradleMavenPush?