The timezonepicker is currently included as git submodule. This issue requests that it should be made a normal dependency which can be imported using Gradle. If that's done, TWT should switch to the dependency and remove the submodule.
The submodule was converted to a standalone library project - but if upstream accepts the PR, the fork can be deleted and the upstream project can be used directly via Jitpack.
The timezonepicker is currently included as git submodule. This issue requests that it should be made a normal dependency which can be imported using Gradle. If that's done, TWT should switch to the dependency and remove the submodule.