Changelog for s6-networking.

In 2.3.0.4
----------

 - Compatibility with skalibs-2.8.0.0.
 - Conforming to the documentation, s6-tcpserver[46]d now prints
its local port to stdout when it is ready, as a notification message.
 - Everything builds as PIC by default.


In 2.3.0.3
----------

 - Compatibility with skalibs-2.7.0.0.
 - Optional nsss support added.


In 2.3.0.2
----------

 - Bugfix release.
 - Compatibility with skalibs-2.6.0.0.


In 2.3.0.1
----------

 - Bugfix release.


In 2.3.0.0
----------

 - Added this NEWS file. :)
 - Major types overhaul to make them more POSIXly correct:
compatibility with skalibs-2.5.0.0.
 - Fixed the "s6-tls[cd] does not die and the zombie application
hangs around" bug. (It's really a workaround for a TCP bug.)
 - s6-tls[cd] ported to bearssl-0.3. Client certificates still
not supported with BearSSL because Thomas is slooooooow at
implementing the high-level server functions I asked him for :P
 - The meaning of the -Y option in s6-tlsd has changed: it now
means "ask for an optional client certificate". Only valid with
a LibreSSL backend for now.