LibreSSL 4.0.0 released

Version 4.0.0 of the LibreSSL TLS/cryptography stack
has been released. Changes include a cleanup of the MD4 and MD5
implementations, removal of unused DSA methods, changes in libtls
protocol parsing to ignore unsupported TLSv1.1 and TLSv1.0 protocols,
and many more internal changes and bug fixes.