Add heading and toc_label settings #423

Job	Run time
exclude-test-jobs	1s
quality	30s
tests (ubuntu-latest, 3.9, highest)	27s
tests (ubuntu-latest, 3.9, lowest-direct)	33s
tests (ubuntu-latest, 3.10, highest)	31s
tests (ubuntu-latest, 3.10, lowest-direct)	33s
tests (ubuntu-latest, 3.11, highest)	28s
tests (ubuntu-latest, 3.11, lowest-direct)	26s
tests (ubuntu-latest, 3.12, highest)	36s
tests (ubuntu-latest, 3.12, lowest-direct)	36s
tests (ubuntu-latest, 3.13, highest)	31s
tests (ubuntu-latest, 3.13, lowest-direct)	31s
tests (ubuntu-latest, 3.14, highest)	38s
tests (ubuntu-latest, 3.14, lowest-direct)	39s
tests (macos-latest, 3.9, highest)	43s
tests (macos-latest, 3.10, highest)	54s
tests (macos-latest, 3.11, highest)	26s
tests (macos-latest, 3.12, highest)	33s
tests (macos-latest, 3.13, highest)	27s
tests (macos-latest, 3.14, highest)	1m 5s
tests (windows-latest, 3.9, highest)	48s
tests (windows-latest, 3.10, highest)	48s
tests (windows-latest, 3.11, highest)	43s
tests (windows-latest, 3.12, highest)	53s
tests (windows-latest, 3.13, highest)	1m 57s
tests (windows-latest, 3.14, highest)	1m 35s
	17m 52s

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