Documentation and Citation Updates:
- Updated CITATION.cff to use newer Citation File Format specification (cff-version 1.4.3.1)
- Added comprehensive paper.bib bibliography for JOSS paper submission
- Complete academic publication package with paper.md describing PyLiPD functionality
- Enhanced citation metadata for formal academic publication

Academic Publication Readiness:
- JOSS-style paper describing PyLiPD's implementation and research applications
- Comprehensive bibliography with 12 key references including LiPD framework, LinkedEarth ontology, and paleoclimate databases
- Proper citation format for academic use and software citation

This release prepares PyLiPD for formal academic publication and improves software citation practices.