Updating dependency versions, using std::ranges::iota_view in test

Merge pull request #22 from connectivecpp/develop

Merging develop to main

Updating to latest Catch2 version

Merge pull request #21 from connectivecpp/develop

Merge develop to main

Design by Contract assertions, concepts and type restraints, minor Doxygen tweaks

Merge pull request #20 from connectivecpp/develop

Tweaked Doxygen one more time