fastkml

34968e19 - Fold auto-generated docs/codedocs into Sphinx docs and update changelog

Fold auto-generated docs/codedocs into Sphinx docs and update changelog Convert the MDX-flavored architecture/guide pages in docs/codedocs into native reStructuredText, integrating them into the existing Sphinx build with a captioned toctree instead of a separate, unbuilt doc tree. Drop the api-reference/ subtree, which duplicated the existing automodule-based fastkml.rst, and the extend-fastkml guide, which duplicated content already in working_with_kml.rst. Also record the changes since 1.4.0 in HISTORY.rst's unreleased section. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>