We're constantly working to improve quic-go. This year, we shipped 7 major releases (see https://github.com/quic-go/quic-go/releases for details), primarily focused on improving performance and enabling new QUIC features.

A highlight this year was the launch of our new comprehensive documentation website (https://quic-go.net/docs/), which explains both basic and advanced QUIC concepts and how to make use of them in quic-go (incl. lots of code samples).