Merge pull request #437 from DrTimothyAldenDavis/dev #450

Job	Run time
msvc (with OpenMP)	7m 24s
mingw (MINGW64)	8m 39s
macos	1h 3m 52s
msvc (without OpenMP)	7m 25s
mingw (MINGW32)	9m 11s
mingw (CLANG64)	1h 11m 10s
mingw (CLANG32)	1h 16m 19s
ubuntu (gcc with CUDA with OpenMP)	7m 27s
ubuntu (gcc without CUDA with OpenMP)	3m 28s
ubuntu (clang with CUDA with OpenMP)	5m 34s
ubuntu (clang without CUDA with OpenMP)	3m 25s
ubuntu (gcc without CUDA without OpenMP)	3m 20s
	4h 27m 14s

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