Fixes and features.

Minor feature, new lockfile

More nodes, newer SSL, etc.

Early preview

Release triggered by issue vi#138

Non-vendored OpenSSL

Bugfixes, but flawed build

Default threaded stdio, `log:`

A heartbeat release

Unfinished migration, but many features accumulated

I'm not sure if I have enough attention span to actually
sit down and finish real Websocat 2.0.0