Add heading and toc_label settings #419

Job	Run time
exclude-test-jobs	1s
quality	29s
tests (ubuntu-latest, 3.9, highest)	25s
tests (ubuntu-latest, 3.9, lowest-direct)	27s
tests (ubuntu-latest, 3.10, highest)	35s
tests (ubuntu-latest, 3.10, lowest-direct)	29s
tests (ubuntu-latest, 3.11, highest)	23s
tests (ubuntu-latest, 3.11, lowest-direct)	30s
tests (ubuntu-latest, 3.12, highest)	30s
tests (ubuntu-latest, 3.12, lowest-direct)	32s
tests (ubuntu-latest, 3.13, highest)	27s
tests (ubuntu-latest, 3.13, lowest-direct)	45s
tests (ubuntu-latest, 3.14, highest)	39s
tests (ubuntu-latest, 3.14, lowest-direct)	38s
tests (macos-latest, 3.9, highest)	49s
tests (macos-latest, 3.10, highest)	57s
tests (macos-latest, 3.11, highest)	33s
tests (macos-latest, 3.12, highest)	34s
tests (macos-latest, 3.13, highest)	37s
tests (macos-latest, 3.14, highest)	50s
tests (windows-latest, 3.9, highest)	47s
tests (windows-latest, 3.10, highest)	43s
tests (windows-latest, 3.11, highest)	51s
tests (windows-latest, 3.12, highest)	51s
tests (windows-latest, 3.13, highest)	1m 42s
tests (windows-latest, 3.14, highest)	1m 53s
	17m 57s

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