scholidonline 0.2.0

Added OpenAlex support for existence checks, metadata, linked identifiers, and conversion to DOI and PMID for work records.
Added ROR support for organization existence checks and metadata.
Added NCBI accession support for GEO, BioProject, RefSeq, SRA, and genome assembly existence checks and metadata via Entrez ESummary.
Added UniProt support for protein accession existence checks and metadata.
Introduced shared NCBI accession helpers for generic Entrez ESummary querying, record resolution, and harmonized metadata frames.
Refactored internal provider infrastructure: shared HTTP helpers, unified rate limiters, registry reader helpers, shared id_*() input preparation, arXiv scalar-to-batch delegation, and consolidated engine provider resolution.

scholidonline 0.1.1

Added provider-level batching for selected arXiv and NCBI operations to reduce unnecessary live-service requests while preserving existing public return shapes.
Added batched NCBI support for PMID, PMCID, and DOI metadata, linked-identifier lookup, existence checks, and supported identifier conversions.
Moved batch execution into the unary and binary dispatch engines so batching is handled consistently through internal dispatchers rather than exported API functions.
Added package-managed throttling for arXiv, NCBI, and Europe PMC requests, with user-configurable rate-limit options.
Added a provider-etiquette vignette documenting batching, throttling, live-service behavior, and relevant user options.

Initial release.