v5.3.0

What's Changed

• Add callback support in settings and tools by @nadolskit in #590
• Moved validate_sources to include all sources not found by @jamesbraza in #595
• Cleaning up citations by @jamesbraza in #598
• Validating sources with case insensitive DOI matching by @jamesbraza in #600
• Added sentence transformers embedding model by @whitead in #604
• Cleaned and clarified deferred embeddings code by @jamesbraza in #597
• Fixed NumpyVectorStore.clear from not clearing text_hashes by @jamesbraza in #608
• Moved Pydantic model_config to top of each class by @jamesbraza in #607
• Testing we can use ~ as paper_directory by @jamesbraza in #610
• Increased testing of NumpyVectorStore and defer_embeddings by @jamesbraza in #606
• Expose env class to run_agent functions by @mskarlin in #611

Full Changelog: v5.2.1...v5.3.0