What's Changed
* socket.gaierror: [Errno 8] nodename nor servname provided, or not known by ATATC in https://github.com/ProjectNeura/LEADS/pull/111
* socket.herror: [Errno 1] Unknown host by ATATC in https://github.com/ProjectNeura/LEADS/pull/113
* Replace Regular Copy with List Copy in Data Persistence by ATATC in https://github.com/ProjectNeura/LEADS/pull/115
* Introduce Polynomial Regression to the Performance Checker by ATATC in https://github.com/ProjectNeura/LEADS/pull/116
**Full Changelog**: https://github.com/ProjectNeura/LEADS/compare/0.8.20...0.8.21