------
* Packmol: overhaul and add tests by rkingsbury in https://github.com/HT-MD/mdgo/pull/17
* Overhaul forcefield parameters for ions by rkingsbury in https://github.com/HT-MD/mdgo/pull/15
* Add a Codacy badge to README.md by codacy-badger in https://github.com/HT-MD/mdgo/pull/19
* codacy-badger made their first contribution in https://github.com/HT-MD/mdgo/pull/19
**Full Changelog**: https://github.com/HT-MD/mdgo/compare/v0.2.1...v0.2.2