suggestions for merging v2-mvc into histogram #1

Job	Run time
check-manifest	9s
test (macos-latest, 3.12) / macos-latest py3.12 pyqt6	56s
test (macos-latest, 3.11) / macos-latest py3.11 pyqt6	1m 2s
test (macos-latest, 3.10) / macos-latest py3.10 pyqt6	59s
test (macos-latest, 3.9) / macos-latest py3.9 pyqt6	1m 12s
test (ubuntu-latest, 3.10) / ubuntu-latest py3.10 pyqt6	1m 13s
test (ubuntu-latest, 3.12) / ubuntu-latest py3.12 pyqt6	1m 13s
test (ubuntu-latest, 3.9) / ubuntu-latest py3.9 pyqt6	1m 1s
test-array-libs (macos-latest, 3.10) / macos-latest py3.10 pyqt6	1m 34s
test-array-libs (macos-latest, 3.12) / macos-latest py3.12 pyqt6	1m 25s
test-array-libs (ubuntu-latest, 3.10) / ubuntu-latest py3.10 pyqt6	3m 6s
test-array-libs (ubuntu-latest, 3.12) / ubuntu-latest py3.12 pyqt6	4m 31s
Deploy	0s
upload_coverage / Upload coverage	7s
	18m 28s

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