update Changelog

optimize hasOutstandingCryptoPackets in sentPacketHandler

permit underlying conn to implement batch interface directly

update qtls to include the crypto/tls fix of Go 1.16.6 / 1.15.14

See https://groups.google.com/g/golang-dev/c/5LJ2V7rd-Ag/m/YGLHVBZ6AAAJ for
details.

cancel the PTO timer when all Handshake packets are acknowledged

update to Go 1.17rc1

fix flaky INVALID_TOKEN server test

drop support for QUIC draft version 32 and 34

fix flaky 0-RTT integration test

use batched reads

add a config option to disable sending of Version Negotiation packets

remove the RetireBugBackwardsCompatibilityMode

remove outdated ackhandler test case

remove unused StripGreasedVersions function

fix incorrect usage of errors.Is

errors.Is is supposed to used for equality of errors, not for type
assertions. That's what error...

return error on SendMessage when session is closed

Such a function would defeat the purpose of greasing. Fortunately, we didn't
actually use it any...

remove a redundant error check

update golangci-lint to v1.41.1

Update doc for dialer in http3.RoundTripper

update Ginkgo to v1.16.4 and Gomega to v1.13.0

add support for Go 1.17 Beta 1

add a CI test that go mod vendor works

prevent go mod vendor from stumbling over the Go 1.18 file

update gomock to v1.6.0

remove CipherSuiteName and HkdfExtract for Go 1.17

use HkdfExtract from x/crypto

This means we don't have to expose it in qtls any more.

add support for QUIC v1, RFC 9000

use tls.CipherSuiteName, instead of wrapping it in the qtls package

use a pre-generated test vectors to test hkdfExpandLabel

reduce flakiness of packet number generation test

simplify the qtls tests

add support for Go 1.17 (tip)

prevent quic-go from building on Go 1.17

fix DONT_FRAGMENT error when using a IPv6 connection on Windows

The syscall setting the IP_DONTFRAGMENT socket option will fail if the
underlying connection is ...

The only reason we were using qtls.HkdfExpandLabel was to test our own
implementation of HKDF-Ex...

use go install to install Ginkgo on CircleCI

use net.ErrClosed (for Go 1.16)

use the new error types to log the reason why a connection is closed

fix race condition in deadline integration test

add support for QUIC v1

rework error return values

declare Path MTU probe packets lost with the early retransmit timer

declare the handshake confirmed when receiving an ACK for a 1-RTT packet

update Go version in go.mod to Go 1.15

trace and qlog version selection / negotiation

fix doc comment for Tracer.TracerForConnection

make it possible to associate a ConnectionTracer with a Session