Sequences restructuring #591

Job	Run time
build (3.9, macos-latest)	1m 19s
build (3.9, ubuntu-latest, deeplay)	2m 6s
build (3.9, ubuntu-latest)	1m 4s
build (3.10, ubuntu-latest)	44s
build (3.9, windows-latest, deeplay)	11m 48s
build (3.9, macos-latest, deeplay)	1m 28s
build (3.10, macos-latest)	1m 16s
build (3.9, windows-latest)	4m 27s
build (3.10, windows-latest, deeplay)	7m 21s
build (3.11, macos-latest)	1m 1s
build (3.10, macos-latest, deeplay)	1m 15s
build (3.10, windows-latest)	1m 52s
build (3.11, ubuntu-latest, deeplay)	2m 3s
build (3.12, ubuntu-latest, deeplay)	2m 37s
build (3.11, ubuntu-latest)	51s
build (3.12, ubuntu-latest)	51s
build (3.10, ubuntu-latest, deeplay)	2m 31s
build (3.11, macos-latest, deeplay)	57s
build (3.11, windows-latest, deeplay)	4m 3s
build (3.12, macos-latest, deeplay)	1m 8s
build (3.12, macos-latest)	55s
build (3.12, windows-latest, deeplay)	7m 51s
build (3.12, windows-latest)	3m 52s
build (3.11, windows-latest)	2m 39s
	1h 5m 59s

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