Tests are CC0/public domain because there's no reason for them not to
be. Examples are also CC0/public domain, but this may be a little bit
weird because they are largely straightforward ports of examples from
nats.c which carry the Apache license. However, I personally wrote
them against the zig bindings and I doubt anyone will end up in a
court of law due to their software containing uselessly trivial
example code.
I believe the standard API surface is now completely wrapped, ignoring
whatever cool copy-paste errors or other mistakes I introduced which
are currently undetectable due to lazy analysis and lack of test
coverage. Cool.