This is a bug-fix release that fixes #2658, which can lead to occasional connection timeouts (see ipfs/kubo#7526 for some real-world data).

This release cherry-picks #2652, #2651 and #2660.
Deployments that have existing deployments of quic-go client and server that cannot be updated all at the same time should set the quic.RetireBugBackwardsCompatibilityMode flag. This flag fixes the connection timeouts, as long as at least one of the peers uses v0.17.3. Note that this flag will be removed in a future release.

Fixes a crash that could occur when qlogging was enabled (#2639).

This release supports QUIC draft-29.

This release contains inconsistent QUIC version numbers and ALPN values. Please use v0.17.1 instead.

Updates to QUIC WG draft-24.

Updates to QUIC WG draft-23.