0.56.1

The 0.56.1 maintenance release is a small update to 0.56.0 which incorporates the following changes:

• Adds support for the latest PyQt6 library (6.4.x versus 6.3.x previously)
• Adds support for versions of ruamel.yaml newer than 0.15.42 in preparation for MPF and MPF-MC to move to newer versions.
• Removes specific check for an MPF version, as MPF-Monitor should work with pretty much any recent version of MPF.

Full Changelog: v0.56.0...v0.56.1