cwl-input-schema implementation (#288) #1006

Job	Run time
CI linters via Tox (lint-readme)	22s
cwl-utils release test	4m 10s
CI linters via Tox (pydocstyle)	13s
CI tests via Tox (3, 9, lint)	18s
CI tests via Tox (3, 9, unit)	2m 1s
CI tests via Tox (3, 9, bandit)	25s
CI tests via Tox (3, 9, mypy)	1m 41s
CI tests via Tox (3, 10, lint)	17s
CI tests via Tox (3, 10, unit)	1m 59s
CI tests via Tox (3, 10, bandit)	28s
CI tests via Tox (3, 10, mypy)	54s
CI tests via Tox (3, 11, lint)	22s
CI tests via Tox (3, 11, unit)	2m 19s
CI tests via Tox (3, 11, bandit)	21s
CI tests via Tox (3, 11, mypy)	45s
CI tests via Tox (3, 12, lint)	23s
CI tests via Tox (3, 12, unit)	2m 2s
CI tests via Tox (3, 12, bandit)	23s
CI tests via Tox (3, 12, mypy)	49s
CI tests via Tox (3, 13, lint)	30s
CI tests via Tox (3, 13, unit)	2m 18s
CI tests via Tox (3, 13, bandit)	34s
CI tests via Tox (3, 13, mypy)	1m 2s
	24m 36s

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