v0.3.9

[0.3.9] - 2026-01-05

Added

• Add add_subscribers_to_lists function (thanks @MochaSteve256)

Changed

• Loosen some of the types to allow more flexible usage (avoid type errors when DTOs/ViewModels/etc have VALUE|None typing but are known to be in a good state)
• Refactor client implementation to improve organization and maintainability