message: Document recent bugfixes.
diff: @@ -49,6 +49,12 @@ is based on [Keep a Changelog](https://keepachangelog.com).
  - Fix memory leaks when deserializing URIs and when detaching the content of
  messages (#1160).
  - Fix undefined behavior in `string_view::compare` (#1164).
  +- Fix undefined behavior when passing `--config-file=` (i.e., without actual
  + argument) to CAF applications (#1167).
  +- Protect against self-assignment in a couple of CAF classes (#1169).
  +- Skipping high-priority messages resulted in CAF lowering the priority to
  + normal. This unintentional demotion has been fixed (#1171).
  +- Fix undefined behavior in the experimental datagram brokers (#1174).
  ## [0.18.0-rc.1] - 2020-09-09
  