--------------------------
**Features**
* Added support for Python 3.9 (79). Thank you, Brady!
* Changed ``assert_*`` helper methods on ``markus.testing.MetricsMock``
to print the records to stdout if the assertion fails. This can save some
time debugging failing tests. (74)
**Backwards incompatible changes**
* Dropped support for Python 3.5 (78). Thank you, Brady!
* ``markus.testing.MetricsMock.get_records`` and
``markus.testing.MetricsMock.filter_records`` return
``markus.main.MetricsRecord`` instances now. This might require
you to rewrite/update tests that use the ``MetricsMock``.