Build

Merge pull request #263 from roman-ellerbrock/master #650

Job	Run time
Repo • macos-latest: clang++ Release	30m 52s
Repo • ubuntu-20.04: g++-10 Release	25m 11s
Repo • macos-latest: clang++ Debug	27m 40s
Repo • ubuntu-20.04: g++-10 Debug	22m 48s
Export • ubuntu-gnu	26m 19s
Export • windows-clang-cl	18m 54s
Export • macos-clang	21m 36s
Export • ubuntu-intel	21m 51s
	3h 15m 11s

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