v2.2.1

Changelog

• 0646cde Update AUTHORS.txt
• 861dc39 Notify read error if udp.listener.readloop exit
• a9d5f4e Fix golangci-lint warnings
• dabec8e Add benchmarks for connctx
• bda0665 Fix typo in TestReadTimeout
• b93120c Update CI configs to v0.10.9
• 5e9c2f0 Bring back LICENSE file
• 604c2bb Update module github.com/stretchr/testify to v1.8.3
• 36cf9dc Update CI configs to v0.10.8
• 67238c1 Update module golang.org/x/net to v0.9.0
• 1a29910 Make package REUSE compliant
• 28fbb3b Update CI configs to v0.10.7