Add release notes to change log for 0.3.13

Fix confirm_optin() returning False on non-English Listmonk servers (fixes #23)

Fix invalid list[] type hints in README usage examples

Update CLAUDE.md to reflect current project state

update dev pinned requirements

Updated CLAUDE.md with a section pointing to the dev-docs/package-guides/ directory and its origin repo

ruff format

Added a comprehensive Listmonk Server REST API Reference section covering all server endpoints to listmonk reference doc

add api docs for a couple of the used libraries

add api docs for a couple of the used libraries

Make subscriber name optional, bump version to 0.3.12 to match Listmonk API/UI behavior (fixes #15)

Make subscriber name optional and add defaults to create_subscriber

Make subscriber name optional and add defaults to create_subscriber

ignore some claude things

Update changelog for v0.3.11 and fix campaign creation headers issue