3.1.0: backups are back

What's Changed

• [3.x] Revert "chore: remove backup" by @alexislefebvre in #316
• [3.x] fix: clean entity manager before loading fixtures by @alexislefebvre in #317
• change parent classe for clear deprecation by @eltharin in #319
• chore: 2.x → 3.x by @alexislefebvre in #320
• chore: prepare release of 3.1.0 by @alexislefebvre in #321

New Contributors

• @eltharin made their first contribution in #319

Full Changelog: 3.0.1...3.1.0