message: Add py2.7 compat to Changelog
diff: @@ -3,6 +3,13 @@ Please add a note of your changes below this heading if you make a Pull Request.
  # Unreleased
  +### Changed
  +* Make python tools compatible with python 2.7 (so it can be used with ROS)
  + * Threading API constructor can't take the daemon parameter, so all thread creation had to be expanded out.
  + * `TimeoutError` isn't defined, but it makes for more readable code, so I defined it as an OSError subclass.
  + * `ModuleNotFoundError` is replaced by the older ImportError.
  + * Print function imported from future
  +
  # Releases
  ## [0.4.4] - 2018-09-18
  ### Fixed
  