message: Document fixes for memory leaks
diff: @@ -40,6 +40,8 @@ is based on [Keep a Changelog](https://keepachangelog.com).
  dependency for `caf_core` to libatomic gets executables to compile and link as
  expected (#1153).
  - Fixed a regression for remote groups introduced in 0.18.0-rc.1 (#1157).
  +- Fix memory leaks when deserializing URIs and when detaching the content of
  + messages (#1160).
  ## [0.18.0-rc.1] - 2020-09-09
  