Tox

simplify calldatasize #29

Job	Run time
Build html documentation with mkdocs	2m 35s
Lint markdown files with markdownlint	6s
Lint python sources with ruff	13s
Run unit tests, ubuntu-latest, 3.10	6m 7s
Run unit tests, macos-latest, 3.11	5m 17s
Run unit tests, ubuntu-latest, 3.12	5m 56s
Typecheck python sources with mypy	30s
Spellcheck sources with pyspelling	41s
Fill tests, deployed, ubuntu-latest, 3.11	5m 46s
Fill tests, deployed, macos-latest, 3.12	4m 38s
	31m 49s

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