v1.21

What's Changed

• feature/pdf quote 51 by @dbosk in #54
• Deduplicate search results, keeping richest copy by @dbosk in #57
• Add Crossref retraction/currency check (#52) by @dbosk in #58
• Add provenance-stub BibTeX export (-f bibtex+prov) (#49) by @dbosk in #56
• Bump the uv group across 1 directory with 2 updates by @dependabot[bot] in #59
• Add scholar prov import/export provenance round-trip (#53) by @dbosk in #60
• Add scholar prov found-via with full reproducible provenance (#50, #61) by @dbosk in #63

Essentially this release is to improve the scholar command for use by AI agents.

Full Changelog: v1.20...v1.21