v4.2.0

What's Changed

• add fastemebed under a feature flag by @prabirshrestha in #162
• add DuckDuckGoSearchResults Tool by @prabirshrestha in #164
• make it easy for anyone to start pgvector docker instance by @prabirshrestha in #163
• fix: make ollama_rs crate visible by @flaviodelgrosso in #165
• add fastembed under feature flag to fix build error by @prabirshrestha in #166

Full Changelog: v4.1.4...v4.2.0