forked from quic-go/quic-go
* add Go 1.21 compatibility Signed-off-by: Eric Lagergren <elagergren@spideroak-inc.com> * refactor for Go 1.20 Signed-off-by: Eric Lagergren <elagergren@spideroak-inc.com> --------- Signed-off-by: Eric Lagergren <elagergren@spideroak-inc.com>