Tests

Feature: Multi-Head Attention #542

Job	Run time
code-coverage	9m 26s
run_tests (ubuntu-latest, 3.9)	3m 3s
run_tests_notebooks (ubuntu-latest, 3.9)	5m 20s
run_tests (ubuntu-latest, 3.10)	2m 53s
run_tests_notebooks (ubuntu-latest, 3.10)	5m 4s
run_tests (ubuntu-latest, 3.11)	5m 12s
run_tests_notebooks (ubuntu-latest, 3.11)	5m 35s
run_tests (macos-latest, 3.9)	3m 4s
run_tests_notebooks (macos-latest, 3.9)	14m 40s
run_tests (macos-latest, 3.10)	2m 54s
run_tests_notebooks (macos-latest, 3.10)	14m 7s
run_tests (macos-latest, 3.11)	3m 13s
run_tests_notebooks (macos-latest, 3.11)	10m 32s
	1h 25m 3s

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