Release 2.20.0

- [FEATURE] QUIC and HTTP/3 Internet Draft 30 support.
- [FEATURE] Unreliable Datagram Extension support.
- [FEATURE] Adaptive congestion controller.
- [BUGFIX] Do not send MAX_STREAM_DATA frames on crypto streams.
- [BUGFIX] Fail with CRYPTO_BUFFER_EXCEEDED when too much CRYPTO
  data comes in.
- [BUFFIX] Spin bit is now strictly per path; value is reset on
  DCID change.
- [BUGFIX] Check that max value of max_streams_uni and
  max_streams_bidi TPs is 2^60.
- [BUGFIX] Close IETF mini conn immediately if crypto session
  cannot be initialized.
- Deprecate ID-28 (no browser uses it): it's no longer in the
  default versions list.
- New programs duck_server and duck_client that implement the
  experimental siduck-00 protocol.  They quack!
- IETF crypto streams: don't limit ourselves from sending.
- Command-line programs: turn off QL loss bits if -G is used, as
  Wireshark cannot decrypt QUIC packets when this extension is used.
- Turn all h3 framing unit tests back on.
- Fix malo initialization when compiled in no-pool mode.

bin/test_cert.h

@@ -24,5 +24,7 @@ lookup_cert (void *cert_lu_ctx, const struct sockaddr * /*unused */,
 void
 delete_certs (struct lsquic_hash *);
 
+int
+add_alpn (const char *alpn);
 
 #endif