Merge branch 'fetchcontent2' into 'master'

.clang-tidy

CMakeLists.txt

MANIFEST.in

README.md

dependencies/CMakeLists.txt

dependencies/fmt/CMakeLists.txt

dependencies/pybind11/CMakeLists.txt

legacy/README.md

legacy/simulation_oop/core_operations.hpp

legacy/simulation_oop/custom_operation.cpp

legacy/simulation_oop/custom_operation.hpp

legacy/simulation_oop/operation.cpp

legacy/simulation_oop/operation.hpp

legacy/simulation_oop/signal_flow_graph.cpp

legacy/simulation_oop/signal_flow_graph.hpp

legacy/simulation_oop/simulation.cpp

legacy/simulation_oop/simulation.hpp

legacy/simulation_oop/special_operations.cpp

legacy/simulation_oop/special_operations.hpp

setup.py