v0.3.0 — Production Hardening & Multi-Channel

What's Changed

• feat: STUN/TURN NAT traversal support by @mytrashcan in #19
• feat: auth and HTTPS/WSS support by @mytrashcan in #20
• feat: rate limiting and Prometheus monitoring by @mytrashcan in #21
• feat: performance optimization and documentation by @mytrashcan in #22
• feat: multi-broadcast channel support by @mytrashcan in #23
• chore: bump version to 0.3.0 by @mytrashcan in #24

Full Changelog: v0.2.0...v0.3.0