More tests, comment cleanup #2371

Job	Run time
Build and Test (ubuntu-latest, default)	1m 17s
Build and Test (ubuntu-latest, all)	3m 32s
Build and Test (ubuntu-latest, experimental-ion-hash)	1m 38s
Build and Test (ubuntu-latest, experimental)	2m 21s
Build and Test (windows-2019, default)	3m 36s
Build and Test (windows-2019, all)	3m 38s
Build and Test (windows-2019, experimental-ion-hash)	3m 38s
Build and Test (windows-2019, experimental)	3m 39s
Build and Test (macos-latest, default)	2m 8s
Build and Test (macos-latest, all)	2m 21s
Build and Test (macos-latest, experimental-ion-hash)	2m 6s
Build and Test (macos-latest, experimental)	3m 12s
	33m 6s

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