Changes in version 0.2.0 (2026-06-04)                  

New identifier types

The package now supports 20 identifier types (up from 7 in 0.1.1). Each
type provides structural validation, normalization from URLs and labels,
and extraction from free text via the existing is_scholid(),
normalize_scholid(), extract_scholid(), classify_scholid(), and
detect_scholid_type() APIs.

New types in this release:

  - ROR — Research Organization Registry iDs (checksum-validated)
  - RRID — Research Resource Identifiers
  - SWHID — Software Heritage persistent identifiers
  - OpenAlex — OpenAlex entity keys (W, A, S, …)
  - bibcode — SAO/NASA ADS bibliographic codes
  - ISNI — International Standard Name Identifier (compact form;
    hyphenated ORCID-shaped strings remain orcid)
  - ARK — Archival Resource Keys (ark:/NAAN/Name)
  - UniProt — UniProtKB accessions
  - refseq — NCBI RefSeq accessions (versioned)
  - sra — INSDC Sequence Read Archive accessions (SRR, SRX, SRP, …)
  - geo — NCBI GEO accessions (GSE, GSM, GPL, GDS)
  - bioproject — INSDC BioProject accessions (PRJNA, PRJEB, …)
  - assembly — INSDC genome assembly accessions (GCA_, GCF_, versioned)

Identifier definitions and validation rules are documented in the
scholid_definitions vignette.

Internal improvements

  - Introduced a central identifier registry as the single source of
    truth for type names, classification order, extraction patterns, and
    per-type metadata.
  - Refactored per-type implementations to reduce duplication; exported
    APIs dispatch by naming convention (is_<type>, normalize_<type>,
    extract_<type>).
  - Optimized classify_scholid() and detect_scholid_type() to avoid
    redundant work when resolving types.

                 Changes in version 0.1.1 (2026-04-24)                  

Bug fixes

  - Tightened normalization and validation behavior for checksum-based
    identifiers.
  - Improved consistency between detection, normalization, and
    validation for ISBN, ORCID, DOI, PMCID, and arXiv identifiers.
  - Fixed several edge cases in identifier parsing and canonicalization.

                 Changes in version 0.1.0 (2026-02-13)                  

Initial release.