The basic tests now run on Windows correctly without needing to manually
copy any files -- the executables are output in the same location as the
necessary DLLs. However, tests that require *.pyd files (all code in the
Mod subdirectory, basically) still do not work on Windows as the test
executables cannot find those files. This is a work in progress.
With future C++ compilers the methods vsprintf and sprintf are declared as deprecated due to security issues.
They are replaced with the secure counterpart of the fmt library
Fixes the compiler warnings -Wdeprecated-declarations
