* adding support for TLS 1.3 for TCP listeners * removed test as CI uses go 1.12 * removed Cassandra support, added deprecation notice * re-added TestTCPListener_tls13
* new documentation website * ci job adjustment * update to latest version on downloads page * remove transition-period scripts * add netlify toml file * fix docs patch * fix ci config? * revert go.mod changes * a couple last markdown formatting fixes