Lenstest

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* restructure module
* add citation
* add conda support
* add github test action
* add github pypi action
* add github citation action
* add copyright stuff
* add ruff support
* overall linting of files
* use build.os for .readthedocs
* add more badges, tweak colors

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* create pure python packaging
* include wheel file
* package as python3 only
* fix flake8 warnings
* add pypi badge
* add new targets
* automate notebook checking

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* initial check-in
* basic functionality for Ronchi tests
* basic functionality for Foucault knife edge tests


3) add testing badge to readme
3) reorganize documentation
4) full docstrings for functions
5) add aberrations

sanity check
make rcheck
python -m build

edit version in setup.cfg
git commit -m 'update version' setup.cfg conf.py

update CHANGELOG.txt `git shortlog v0.5.0..HEAD`
git commit -m 'update recent changes' CHANGELOG.txt
git push

create release tag on github
git tag v0.5.1
git push origin v0.5.1

publish release
open https://github.com/scottprahl/lenstest

check docs
open https://lenstest.readthedocs.io

check pypi release
open https://pypi.org/project/lenstest/

check zenodo release
open https://pypi.org/project/lenstest/