1. slew_example.py: added to examples
2. in attitude\_analysis.py: functions in utils.py and complement\_missing\_sofa.py are now embedded in attitude\_analysis.py
3. use\_rotation\_matrices.py: utils.py and missing\_complement\_sofa.py imports removed
4. attitude\_analysis.spacecraft\_distance\_from\_a\_point: fixed a minor bug, which caused the distance array to return empty.
5. requirements.txt: version numbers were added for dependencies.
6. .readthedocs.yaml: version number and installation instructions corrected.