Release 2.29.0

- [FEATURE] QUIC and HTTP/3 Internet Draft 34 support and v1 support.
The latter is turned off by default.
- Drop support for ID-28 and ID-32.
- [BUGFIX] IETF QUIC mini conn receive history (trechist): allow
unlimited inserts by dropping smallest elements.
- [BUGFIX] gQUIC: set STTL to correct value, issue #226.
- [BUGFIX] Account for poison packet gap when MTU probe was too large.

Update BoringSSL version to b117a3a0b7bd11fe6ebd503ec6b45d6b910b41a1

Release 2.16.2

- [BUGFIX] ID-28: do not use TLS middlebox compatibility mode in
ClientHello. This change requires using a newer version of BoringSSL.
- [BUGFIX] Free connections in Advisory Tick Time Queue in engine dtor.
- [BUGFIX] IETF QUIC client: narrow migration check to a single path.
- [BUGFIX] NULL dereference: set function pointers for alarm for path
challenges 2 and 3.
- [BUGFIX] HTTP/3 headers may be followed immediately by trailers.
- [BUGFIX] Log messages when SCID changes.

CirrusCI: Update FreeBSD version to 12.1

Use later version of BoringSSL

Release 2.4.5

- [OPTIMIZATION]: flush encoder stream only when necessary.
- [BUGFIX] Use ls-qpack v0.10.2 for new API -- and for a bug fix.
- [BUGFIX] Typo in IETF conn SETTINGS writer.
- Use latest BoringSSL.

Release 2.2.0: server included, ID-22 supported (#76)

Simplify configuration -- use more cmake functions (#62)

Add Cirrus CI for FreeBSD