v1.3.0

What's Changed

• Drop support for Python 3.6, which went end-of-life December 2021 by @anoadragon453 in #28
• Configure setuptools to automatically discover new modules under
  src/matrix_common by @anoadragon453 in #27
• Add a MXCUri class for representing Matrix media uri's by @anoadragon453 in #29

Full Changelog: v1.2.1...v1.3.0