v7.0.0: Complete rewrite as drop-in replacement #63

Job	Run time
Build and Test (windows-latest, 21)	2m 36s
Build and Test (macos-latest, 17)	1m 19s
Build and Test (ubuntu-latest, 17)	1m 54s
Build and Test (ubuntu-latest, 21)	1m 14s
Build and Test (windows-latest, 17)	1m 25s
Build and Test (macos-latest, 21)	1m 13s
	9m 41s

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