Latest version is not tagged

The latest tag (4.4.0) is not the latest release, with that `ember-source@4` will fail [in the segment service](https://github.com/josemarluedke/ember-cli-segment/blob/v4.4.0/addon/services/segment.js#L4)

On master the service was refactored, using the package with the latest commit hash works as expected.