Highlights since v4.1.0:
- Enable SCTP_NODELAY (fixes catastrophic SCTP throughput)
- Optional concurrent message dispatch in conn.serve()
- Fix serve loop closing connection before draining in-flight handlers
- Fix listener double-close race in Server.Serve
- Fix pretty_dump Address formatting for non-IP types
- Fix E.164 Address display without breaking non-IP round-trip
- Rename Multimedia-Authentication to Multimedia-Auth per 3GPP spec
- Update google.golang.org/grpc to v1.79.3 (critical CVE fix)