v0.1.0

Initial release of polite-http — a courteous, dependency-free HTTP client with per-host cross-process rate limiting (fcntl on POSIX, msvcrt on Windows), automatic retries on 429/5xx and network errors, exponential backoff with jitter, Retry-After support, and X-Throttling-Control backpressure.

Built entirely on the Python standard library. Derived from google-deepmind/science-skills (Apache-2.0); see NOTICE.

See CHANGELOG.md for details.