----------------------
* Message now ends with trailing carriage return, to be consistent with Message
Construction Rules (Section 2.6, v2.8). [`python-hl726 <https://github.com/johnpaulett/python-hl7/issues/26>`]
* Handle ASCII characters within :py:meth:`hl7.Message.escape` under Python 3.
* Don't escape MSH-2 so that the control characters are retrievable. [`python-hl727 <https://github.com/johnpaulett/python-hl7/issues/27>`]
* Add MSH-9.1.3 to create_ack.
* Dropped support for Python 2.7, 3.3, & 3.4. Python 3.5 - 3.8 now supported.
* Converted code style to use black.
Thanks `Lucas Kahlert <https://github.com/f3anaro>`_ &
`Joseph Wortmann <https://github.com/joseph-wortmann>`_!