Merge pull request #69 from apple1417/v2 #154

Job	Run time
build-windows (msvc-oak-release)	1m 26s
build-windows (msvc-willow-release)	2m 10s
build-windows (clang-willow-release)	2m 57s
build-windows (clang-oak-release)	2m 43s
clang-format	1m 42s
clang-tidy (clang-willow-release)	11m 40s
build-ubuntu (clang-cross-willow-release, clang-cross)	2m 28s
build-ubuntu (mingw-oak-release, mingw)	1m 38s
clang-tidy (clang-oak-release)	12m 13s
build-ubuntu (mingw-willow-release, mingw)	1m 44s
build-ubuntu (clang-cross-oak-release, clang-cross)	2m 25s
spelling	6s
build-ubuntu (llvm-mingw-willow-release, llvm-mingw)	1m 4s
build-ubuntu (llvm-mingw-oak-release, llvm-mingw)	1m 0s
	45m 16s

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