Changes in version 0.6.2 (2026-06-06) Fixed .pvar loading bug that could occur when a variant had a single-character ID and a multi-character REF allele (https://github.com/chrchang/plink-ng/pull/333 ). Changes in version 0.6.1 (2026-03-28) Filled in missing pgenlibr::NewPvar() error message, and added workaround for systems with pthread_create() implementations which don't seem to support a custom stack-size attr. Changes in version 0.6.0 (2026-03-24) 15 MB of library source code files (libdeflate, SIMDe, zstd) are no longer kept after installation. (If you were depending on these files, we apologize for the inconvenience; you should be able to switch to something like the tools/-based workflow that pgenlibr now uses.) Changes in version 0.5.3 (2025-06-25) HasSparse(), HasSparseHardcalls(), ReadSparse(), and ReadSparseHardcalls() functions added. Changes in version 0.4.0 (2025-01-15) CHROM and POS columns in .pvar are now loaded by default, and they can be checked with GetVariantChrom() and GetVariantPos(). NewPvar() should now work properly on .bim files. Changes in version 0.3.7 (2024-06-04) Undo premature switch to system libdeflate in Makevars.win, which broke R 4.3 Windows build. Changes in version 0.3.6 (2024-05-27) Patches Windows-build link order, makes .pgen reader forward-compatible with header/footer extensions in May 2024 specification update. Changes in version 0.3.5 (2023-06-12) Patches irregularities (e.g. interaction with preinstalled libraries, unaligned loads) in initial submission. Changes in version 0.3.3 (2023-05-24) Initial CRAN version.