Update CI configs to v0.4.7

Update lint scripts and CI configs.

errors.go

@@ -108,4 +108,25 @@ var (
 
 	// ErrTCPRemoteAddrAlreadyExists indicates we already have the connection with same remote addr.
 	ErrTCPRemoteAddrAlreadyExists = errors.New("conn with same remote addr already exists")
+
+	errSendPacket                    = errors.New("failed to send packet")
+	errAttributeTooShortICECandidate = errors.New("attribute not long enough to be ICE candidate")
+	errParseComponent                = errors.New("could not parse component")
+	errParsePriority                 = errors.New("could not parse priority")
+	errParsePort                     = errors.New("could not parse port")
+	errParseRelatedAddr              = errors.New("could not parse related addresses")
+	errParseTypType                  = errors.New("could not parse typtype")
+	errUnknownCandidateTyp           = errors.New("unknown candidate typ")
+	errGetXorMappedAddrResponse      = errors.New("failed to get XOR-MAPPED-ADDRESS response")
+	errConnectionAddrAlreadyExist    = errors.New("connection with same remote address already exists")
+	errReadingStreamingPacket        = errors.New("error reading streaming packet")
+	errWriting                       = errors.New("error writing to")
+	errClosingConnection             = errors.New("error closing connection")
+	errDetermineNetworkType          = errors.New("unable to determine networkType")
+	errMissingProtocolScheme         = errors.New("missing protocol scheme")
+	errTooManyColonsAddr             = errors.New("too many colons in address")
+	errRead                          = errors.New("unexpected error trying to read")
+	errUnknownRole                   = errors.New("unknown role")
+	errMismatchUsername              = errors.New("username mismatch")
+	errICEWriteSTUNMessage           = errors.New("the ICE conn can't write STUN messages")
 )