Panic on startup

On startup from quicssh, I get this message:
```
panic: qtls.ConnectionState not compatible with tls.ConnectionState

goroutine 1 [running]:
github.com/lucas-clemente/quic-go/internal/handshake.init.0()
        /root/go/pkg/mod/github.com/lucas-clemente/quic-go@v0.7.1-0.20190710050138-1441923ab031/internal/handshake/unsafe.go:17 +0xc5
```
I installed @ latest