It helps to list, in one place, both ways the list size is conveyed.

Calculate SO_VERSION in configure for compatibility with BSD make.

BSD Make does not support `$(shell ...)`. It does support an alternative, `!=` assignments (which, confusingly, don't mean "not equal" but rather "evaluate the right in the shell before assignment"). GNU Make also supports `!=` as of version 4.0, released in 2013. Unfortunately, f***ing Apple ships GNU Make version 3.81, from 2006, with MacOS/XCode.

Add OpenBSD to posix_memalign ifdef

Introduce kj::attachVal(), kj::attachRef(), and capnp::clone() utility functions

Add TwoPartyServer::drain().

This is frequently needed. Sandstorm had `OwnCapnp` for this purpose:

https://github.com/sandstorm-io/sandstorm/blob/4d86a8144cdb43120ea12845738d0fe4a6ffcda1/src/sandstorm/util.h#L495-L525

The Workers codebase has some ad-hoc copies of this logic too, and multiple people have requested something similar on the mailing list.

This is a lot like Own<T>::attach() but for the case where you don't have a Own pointer, you just have a reference or value that you want to attach stuff to.

Align HTTP entity-body delimiting rules with RFC 7230.

Skip test that fails under qemu-user, probably due to a qemu bug.

The main case where the code was wrong is when neither Content-Length nor Transfer-Encoding was provided on a response. In this case the response is delimited by closing the connection, but KJ previously rejected it outright. AFAICT almost no one on the whole internet relies on this anymore... almost.

Fix exclusiveJoin() bug when both branches complete simultaneously.

Implement FD passing in Cap'n Proto. 

Fix uninitialized byte arrays in encoding-test.

Initializer lists are temporaries. The code apparently works in debug mode but fails when optimized.

Add support for url-safe base64 encoding

Fix bug in `kj::newOneWayPipe(0)`.

Fix typos spotted by @a-robinson and update test failure messages to indicate that either testing failing could be due to OS SCM_RIGHTS truncation bug.