* cmake modernization
- get rid of some warnings
- switch to what I hope is the correct way of doing things
- bump min cmake version to 3.16
- bump min boost version to 1.70
This builds on linux
* remove some usages of PYTHON_EXECUTABLE
* remove old-school python usage from coverage tests
* remove unused CI file
* bump boost version for windows builds to 1.84
* still trying to get the ci builds working
* typo
* eventually the CI will work
* robustify some tests
67f507a15c