Migration to C++20

As soon as we request C++20, we can do the following:

• Use pi and other constants from std::numbers, instead of our own definitions in Base/Math/Constants.h

changed title from C++ upgrades to MIgration to C++20

changed title from MIgration to C++20 to Migration to C++20

added simplify label

added wait for dependency! label

Resolved in 8d3e48e2

closed

mentioned in commit 8d3e48e2