Tox

convert calldataload and calldatasize tests #14

Job	Run time
Lint python sources with ruff	7s
Run unit tests, ubuntu-latest, 3.10	6m 53s
Run unit tests, macos-latest, 3.11	4m 24s
Lint markdown files with markdownlint	6s
Build html documentation with mkdocs	2m 28s
Spellcheck sources with pyspelling	38s
Run unit tests, ubuntu-latest, 3.12	6m 0s
Fill tests, deployed, ubuntu-latest, 3.11	5m 37s
Typecheck python sources with mypy	25s
Fill tests, deployed, macos-latest, 3.12	4m 36s
	31m 14s

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