Sōzu 0.15.18 is available

Our open source reverse proxy, Sōzu, is now deployed in its version 0.15.18. It gives performance enhancements and:

• Fix 502 following a 304 response with a body that does not respect RFCs
• Fix of a panic when upgrading from HTTP to WS or from HTTPs to WSs
• Fix encryption issues when reusing TLS sessions (bump of Rustls)
• Added a --json flag to all commands