v0.8.4: CLI / CPO / KTO important fixes

This patch release includes important fixes for the CLI and KTO & CPO trainers

What's Changed

• set dev version by @younesbelkada in #1529
• [CPO] fix memory leak due to retained value by @kashif in #1531
• VSFT hotfix - adds gen prompt to template and processor to hub by @edbeeching in #1532
• save_model -> save_pretrained in ppo_trainer.mdx by @ejmejm in #1537
• [KTO] support to load the adapter twice by @claralp in #1542
• CLI: Set dataset_text_field to None to allow ChatML automatic template by @younesbelkada in #1545
• FIX: Fix slow test by @younesbelkada in #1546
• Fixed ref model not used in PPO generation by @ejmejm in #1534
• Release: v0.8.4 by @younesbelkada in #1547

New Contributors

• @ejmejm made their first contribution in #1537

Full Changelog: v0.8.3...v0.8.4