3.0.0

What is in this release?

ESM Migration:

• Convert to native ES modules with dual CJS/ESM package support
• Use tsup for building both formats

FRED API v2 Support:

• Add getObservationsForRelease() for v2/release/observations endpoint
• Add getAllObservationsForRelease() with automatic pagination
• v2 API uses Bearer token authentication via Authorization header

New Features:

• Add start_time and end_time parameters to series/updates endpoint
• Add endpoint-specific limit validation (100k observations, 10k dates, 500k v2)
• Add exponential backoff with automatic retry for all endpoints
  • Retries on 429 (rate limit) and 503 (service unavailable)
  • Configurable: maxRetries, initialDelayMs, maxDelayMs, backoffMultiplier

TypeScript:

• Update type definitions for v2 API types