Add rate-limit awareness with automatic 429 retry and adaptive polling

Track X-RateLimit-Limit/Remaining headers from API responses, automatically
retry on HTTP 429 with Retry-After respect, and adaptively slow down
fetchResults() polling when remaining requests are low. Adds public getters
for rate-limit state and configurable retry/threshold settings.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Release v1.2.0

Add requests_per_minute to quota response

Release version 1.1.0 - Add makeGetRequest method

New feature:
- Added makeGetRequest() method for proper GET query parameter handling
- Utility packages can now properly use GET requests with query params
- Maintains backward compatibility

This release enables proper GET request handling for utility endpoints.

Expanding multipart params

Merge remote-tracking branch 'origin/master'

Create README.md