Tox

put args_size and sha3_len in contract #28

Job	Run time
Lint markdown files with markdownlint	4s
Build html documentation with mkdocs	2m 35s
Run unit tests, ubuntu-latest, 3.10	6m 8s
Lint python sources with ruff	7s
Run unit tests, macos-latest, 3.11	4m 20s
Spellcheck sources with pyspelling	32s
Run unit tests, ubuntu-latest, 3.12	6m 1s
Fill tests, deployed, ubuntu-latest, 3.11	5m 53s
Typecheck python sources with mypy	25s
Fill tests, deployed, macos-latest, 3.12	4m 47s
	30m 52s

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