Remove aligned_storage and aligned_union since C++23 (#520)

Don't use the deprecated form of user-defined literal operator (#532)

Add support for modular build structure. (#531)

This removes the superflous test project ID that will conflict with the modular project IDs for all libraries.

Implement type_name on GCC and fix on older Clangs

Remove -Wpedantic

Fix a few tests that didn't get ignored properly on Windows

Add a Github Actions config

Fix implementation of experimental type_name

[README] Update how to run ctest inside the build directory

Remove workaround in tests for old Clang

[README] Move "try it" link to godbolt

Re-apply MSVC workaround

Revert "Re-add MSVC workarounds that were dropped by e315075"

Re-add MSVC workarounds that were dropped by e315075