Merge pull request #86 from cclauss/patch-1 #14

Job	Run time
build-and-test (g++, undefined)	27s
build-and-test (clang++, thread)	48s
build-and-test (clang++, address)	44s
build-and-test (g++, address)	27s
build-and-test (clang++, undefined)	38s
build-and-test (g++, thread)	2m 7s
	5m 11s

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