message: Document fix for SSL_ERROR_WANT_READ
diff: @@ -12,6 +12,11 @@ is based on [Keep a Changelog](https://keepachangelog.com).
  when setting a `timespan` parameter such as `caf.middleman.heartbeat-interval`
  via config file or CLI to `0s` and then printing the config parameter, e.g.,
  via `--dump-config`.
  +- When using the OpenSSL module, CAF could run into a state where the SSL layer
  + wants to read data while CAF is trying to send data. In this case, CAF did not
  + properly back off, causing high CPU load due to spinning and in some scenarios
  + never recovering. This issue has been resolved by properly handling
  + `SSL_ERROR_WANT_READ` on the transport (#1060).
  ### Removed
  