Unsupported Dependency (Conflict Module)

When I install the latest version of Deploy (using Composer, i.e. composer require 'drupal/deploy:^1.0') on Drupal 8.4, I get a permanent error message in my site's configuration screens (e.g. Reports -> Status Report, among other places):

The installed version of at least one of your modules or themes is no longer supported. Upgrading or disabling is strongly recommended. See the project homepage for more details. See the available updates page for more information and to install your missing updates.

Sometimes you have to run Extend->Update->Check Manually before the error appears.

It's being caused because Deploy has Multiversion as a dependency, which in turn has has Conflict 8.x-1.0 as a dependency. But clearly Drupal 8.x does not recognize Conflict 8.x-1.0 as a supported module...

I'm not exactly clear on how the updating/supported modules process is controlled, is this fixable in this project? Or in the Multiversion project (there's already a bug report here)? Do we need to get Conflict to put out a stable release for 8.x first?

In any event, I'd sure like to get rid of that error message...