Prepare for first boost release #393

Job	Run time
B2 gcc-11	5m 9s
CMake gcc-11 17 Debug	11m 11s
B2 clang-14	4m 14s
B2 msvc-14.2	8m 7s
CMake gcc-11 20 Release	10m 50s
CMake msvc-14.2 Debug C++17	8m 25s
B2 msvc-14.3	7m 50s
CMake clang-11 17 Debug	5m 27s
CMake msvc-14.2 Release C++17	9m 25s
CMake clang-11 20 Debug	5m 15s
CMake msvc-14.3 Debug C++20	9m 53s
CMake clang-13 17 Release	7m 9s
CMake msvc-14.3 Release C++20	10m 7s
CMake clang-13 20 Release	7m 42s
CMake clang-14 17 Debug -stdlib=libc++	11m 28s
CMake clang-14 20 Release -stdlib=libc++	11m 28s
	2h 13m 40s

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