Rexilion API docs

Rexilion API changelog

Recent Rexilion API documentation changes that affect developer navigation, endpoint references, and public plan clarity.

Changelog entries summarize metric docs pages, endpoint references, Basic/Premium documentation updates, and 429 too_many_requests headers: X-Rate-Limit-Limit, X-Rate-Limit-Remaining, X-Rate-Limit-Reset, and Retry-After.

• Authentication
• Errors
• Metric docs
• OpenAPI JSON