v1.21.0-RC3 (2025-10-11)

• Dependency: on Clojars
• Versioning: Break Versioning

Since v1.21.0-RC2 (2025-09-05)

• [fix] [#475] [#476] Fix bad WebSocket close call args [2120b13]
• [new] [#477] Add gzip-wrapping packer [956268c]
• [new] [#476] Make it easier to test server restarts [f292180]
• [new] [#474] Add UUID support to Msgpack packer (@jrgvf) [2fdd8f8]
• [doc] Add packer info to wiki [08dc349]
• [mod] Drop Clojure v1.10 testing [648ac31]