What's Changed
* Update CITATION.cff by mschwamb in https://github.com/dirac-institute/sorcha/pull/510
* Update error logging, use `comet_activity` config value, register all cometary activity subclasses in Sorcha by drewoldag in https://github.com/dirac-institute/sorcha/pull/513
**Full Changelog**: https://github.com/dirac-institute/sorcha/compare/v0.4...v0.4.1