Release Process - Doctest

update version in version.txt (following semver)
run update_stuff.py from the scripts folder
regenerate test output (actually only the version test's output changes and that was done to maximize code coverage - might remove it to simplify the release process)
- first run cmake with -DDOCTEST_TEST_MODE=COLLECT
- then run ctest & git add the changed and/or new .txt files
run changelog generator (WIP)
commit in dev
rebase dev onto master (linear history instead of merge commits)
push all branches (git push --all)
create github release with the same semver tag as the changelog
- copy the text from a previous release and update the version numbers & dates
OPTIONAL: update packages (I've never done it)