Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.66:
- Made atlas_install_python_modules(...) once again execute post-build commands on files in sub-directories correctly;
* Fixed how atlas_install_generic(...) (and atlas_install_python_modules(...)) would deal with file/directory names that match a CMake keyword;
- Made flake8_atlas process sub-directories correctly.