* Drop support for Python 3.6
* Remove unused time parsing function
* Use Python 3.7 datetime function for writing stats data conversion
* Test against Python 3.10 on macOS and Windows
* Fix transparency on some of the icons
* Rewrite the setup clean command
* Clean up setup script and remove no longer needed qthelp command
* Add bash scripts for common make build chains
* Update the description files and change how setup writes generated files
* Reduce the number of setup files added to minimal zip packages