Testing added and many other fixes #8

Job	Run time
build (ubuntu-latest, Debug, gcc)	2m 10s
build (ubuntu-latest, Debug, gcc)	2m 10s
build (ubuntu-latest, Debug, clang)	2m 9s
build (ubuntu-latest, Debug, clang)	2m 9s
build (ubuntu-latest, Release, gcc)	2m 42s
build (ubuntu-latest, Release, gcc)	2m 42s
build (ubuntu-latest, Release, clang)	2m 54s
build (ubuntu-latest, Release, clang)	2m 54s
build (windows-latest, Debug, cl)	2m 21s
build (windows-latest, Debug, cl)	2m 55s
build (windows-latest, Release, cl)	2m 54s
build (windows-latest, Release, cl)	2m 54s
build (macos-latest, Debug, gcc)	2m 37s
build (macos-latest, Debug, gcc)	2m 37s
build (macos-latest, Debug, clang)	4m 2s
build (macos-latest, Debug, clang)	4m 2s
build (macos-latest, Release, gcc)	2m 57s
build (macos-latest, Release, gcc)	2m 57s
build (macos-latest, Release, clang)	3m 14s
build (macos-latest, Release, clang)	3m 14s
	56m 34s

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