Ambiguous dependencies

[fpauser]

ember-dependency-lint discovered that there is a version mismatch in the required ember-in-element-polyfill:

Expected only one version of ember-in-element-polyfill, but found
            private-ember-app
            └─┬ ember-leaflet
              ├── ember-in-element-polyfill@1.0.0
              └─┬ ember-composability-tools
                └── ember-in-element-polyfill@0.2.2

[miguelcobain]

This should not be an issue in latest 5.0.0-beta.X (latest is 5.0.0-beta.4 at the time of writing).
Sorry to require a major bump to fix this.