Merge pull request #341 from elbeno/remove-pre-cpp20 #954

Job	Run time
mutate	5m 28s
quality_checks_pass	52s
valgrind	6m 13s
sanitize (undefined, clang)	5m 47s
sanitize (address, gcc)	4m 47s
sanitize (undefined, gcc)	4m 56s
sanitize (thread, gcc)	4m 41s
sanitize (thread, clang)	5m 45s
sanitize (address, clang)	5m 46s
build_and_test_24 (clang, 19, 23, libstdc++, Debug)	5m 40s
build_and_test_24 (gcc, 12, 23, libstdc++, Debug)	4m 40s
build_and_test_24 (clang, 18, 23, libstdc++, Debug)	5m 33s
build_and_test_24 (clang, 20, 23, libc++, Debug)	7m 7s
build_and_test_24 (clang, 20, 23, libstdc++, Debug)	5m 28s
build_and_test_24 (clang, 18, 23, libc++, Debug)	7m 45s
build_and_test_24 (clang, 21, 23, libc++, Debug)	6m 33s
build_and_test_24 (clang, 22, 23, libc++, Debug)	6m 15s
build_and_test_24 (clang, 19, 23, libc++, Debug)	6m 14s
build_and_test_24 (gcc, 13, 23, libstdc++, Debug)	4m 56s
build_and_test_24 (clang, 22, 23, libstdc++, Debug)	6m 21s
build_and_test_24 (gcc, 14, 23, libstdc++, Debug)	5m 18s
build_and_test_24 (clang, 21, 23, libstdc++, Debug)	5m 56s
merge_ok	3s
	2h 2m 4s

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