Fix lint: add checked type assertion and allow protobuf/proto in depguard

Fix data race in OnTrafficFromServer by cloning resp before channel send

Improvements (#87)

Update deps (#86)

Fix test (ipv4/6 issue)

Fix test

Update depguard setting

Update Go and deps

Update deps

Remove compatibility policy

Update deps (#85)

Update golangci-lint action

Fix bug in handling UTF-8 strings in protobuf

Update env-vars

Increase timeout of test workflow